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The tropical biomass & carbon project–An application for forest biomass and carbon estimates. Ecol Modell 2022. [DOI: 10.1016/j.ecolmodel.2022.110067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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2
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He J, Fan C, Geng Y, Zhang C, Zhao X, von Gadow K. Assessing scale-dependent effects on Forest biomass productivity based on machine learning. Ecol Evol 2022; 12:e9110. [PMID: 35845366 PMCID: PMC9277413 DOI: 10.1002/ece3.9110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 06/21/2022] [Accepted: 06/24/2022] [Indexed: 12/02/2022] Open
Abstract
Estimating forest above‐ground biomass (AGB) productivity constitutes one of the most fundamental topics in forest ecological research. Based on a 30‐ha permanent field plot in Northeastern China, we modeled AGB productivity as output, and topography, species diversity, stand structure, and a stand density variable as input across a series of area scales using the Random Forest (RF) algorithm. As the grain size increased from 10 to 200 m, we found that the relative importance of explanatory variables that drove the variation of biomass productivity varied a lot, and the model accuracy was gradually improved. The minimum sampling area for biomass productivity modeling in this region was 140 × 140 m. Our study shows that the relationship of topography, species diversity, stand structure, and stand density variables with biomass productivity modeled using the RF algorithm changes when moving from scales typical of forest surveys (10 m) to larger scales (200 m) within a controlled methodology. These results should be of considerable interest to scientists concerned with forest assessment.
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Affiliation(s)
- Jingyuan He
- Research Center of Forest Management Engineering of State Forestry Administration Beijing Forestry University Beijing China
| | - Chunyu Fan
- Research Center of Forest Management Engineering of State Forestry Administration Beijing Forestry University Beijing China
| | - Yan Geng
- Research Center of Forest Management Engineering of State Forestry Administration Beijing Forestry University Beijing China
| | - Chunyu Zhang
- Research Center of Forest Management Engineering of State Forestry Administration Beijing Forestry University Beijing China
| | - Xiuhai Zhao
- Research Center of Forest Management Engineering of State Forestry Administration Beijing Forestry University Beijing China
| | - Klaus von Gadow
- Research Center of Forest Management Engineering of State Forestry Administration Beijing Forestry University Beijing China.,Faculty of Forestry and Forest Ecology Georg-August-University Göttingen Germany.,Department of Forest and Wood Science University of Stellenbosch Matieland South Africa
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3
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Zhang M, Lu N, Jiang L, Liu B, Fei Y, Ma W, Shi C, Wang J. Multiple dynamic models reveal the genetic architecture for growth in height of Catalpa bungei in the field. TREE PHYSIOLOGY 2022; 42:1239-1255. [PMID: 34940852 DOI: 10.1093/treephys/tpab171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 12/19/2021] [Indexed: 06/14/2023]
Abstract
Growth in height (GH) is a critical determinant for tree survival and development in forests and can be depicted using logistic growth curves. Our understanding of the genetic mechanism underlying dynamic GH, however, is limited, particularly under field conditions. We applied two mapping models (Funmap and FVTmap) to find quantitative trait loci responsible for dynamic GH and two epistatic models (2HiGWAS and 1HiGWAS) to detect epistasis in Catalpa bungei grown in the field. We identified 13 co-located quantitative trait loci influencing the growth curve by Funmap and three heterochronic parameters (the timing of the inflection point, maximum acceleration and maximum deceleration) by FVTmap. The combined use of FVTmap and Funmap reduced the number of candidate genes by >70%. We detected 76 significant epistatic interactions, amongst which a key gene, COMT14, co-located by three models (but not 1HiGWAS) interacted with three other genes, implying that a novel network of protein interaction centered on COMT14 may control the dynamic GH of C. bungei. These findings provide new insights into the genetic mechanisms underlying the dynamic growth in tree height in natural environments and emphasize the necessity of incorporating multiple dynamic models for screening more reliable candidate genes.
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Affiliation(s)
- Miaomiao Zhang
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Nan Lu
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Libo Jiang
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo 255049, China
| | - Bingyang Liu
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Yue Fei
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Wenjun Ma
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Chaozhong Shi
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Junhui Wang
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
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4
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Estimating Aboveground Biomass in Dense Hyrcanian Forests by the Use of Sentinel-2 Data. FORESTS 2022. [DOI: 10.3390/f13010104] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Due to the challenges brought by field measurements to estimate the aboveground biomass (AGB), such as the remote locations and difficulties in walking in these areas, more accurate and cost-effective methods are required, by the use of remote sensing. In this study, Sentinel-2 data were used for estimating the AGB in pure stands of Carpinus betulus (L., common hornbeam) located in the Hyrcanian forests, northern Iran. For this purpose, the diameter at breast height (DBH) of all trees thicker than 7.5 cm was measured in 55 square plots (45 × 45 m). In situ AGB was estimated using a local volume table and the specific density of wood. To estimate the AGB from remotely sensed data, parametric and nonparametric methods, including Multiple Regression (MR), Artificial Neural Network (ANN), k-Nearest Neighbor (kNN), and Random Forest (RF), were applied to a single image of the Sentinel-2, having as a reference the estimations produced by in situ measurements and their corresponding spectral values of the original spectral (B2, B3, B4, B5, B6, B7, B8, B8a, B11, and B12) and derived synthetic (IPVI, IRECI, GEMI, GNDVI, NDVI, DVI, PSSRA, and RVI) bands. Band 6 located in the red-edge region (0.740 nm) showed the highest correlation with AGB (r = −0.723). A comparison of the machine learning methods indicated that the ANN algorithm returned the best ABG-estimating performance (%RMSE = 19.9). This study demonstrates that simple vegetation indices extracted from Sentinel-2 multispectral imagery can provide good results in the AGB estimation of C. betulus trees of the Hyrcanian forests. The approach used in this study may be extended to similar areas located in temperate forests.
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Height-diameter allometry for tropical forest in northern Amazonia. PLoS One 2021; 16:e0255197. [PMID: 34914697 PMCID: PMC8675728 DOI: 10.1371/journal.pone.0255197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 11/02/2021] [Indexed: 11/24/2022] Open
Abstract
Height measurements are essential to manage and monitor forest biomass and carbon stocks. However, accurate estimation of this variable in tropical ecosystems is still difficult due to species heterogeneity and environmental variability. In this article, we compare and discuss six nonlinear allometric models parameterized at different scales (local, regional and pantropical). We also evaluate the height measurements obtained in the field by the hypsometer when compared with the true tree height. We used a dataset composed of 180 harvested trees in two distinct areas located in the Amapá State. The functional form of the Weibull model was the best local model, showing similar performance to the pantropical model. The inaccuracy detected in the hypsometer estimates reinforces the importance of incorporating new technologies in measuring individual tree heights. Establishing accurate allometric models requires knowledge of ecophysiological and environmental processes that govern vegetation dynamics and tree height growth. It is essential to investigate the influence of different species and ecological gradients on the diameter/height ratio.
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Gonzalez‐Akre E, Piponiot C, Lepore M, Herrmann V, Lutz JA, Baltzer JL, Dick CW, Gilbert GS, He F, Heym M, Huerta AI, Jansen PA, Johnson DJ, Knapp N, Král K, Lin D, Malhi Y, McMahon SM, Myers JA, Orwig D, Rodríguez‐Hernández DI, Russo SE, Shue J, Wang X, Wolf A, Yang T, Davies SJ, Anderson‐Teixeira KJ. allodb
: An R package for biomass estimation at globally distributed extratropical forest plots. Methods Ecol Evol 2021. [DOI: 10.1111/2041-210x.13756] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Erika Gonzalez‐Akre
- Conservation Ecology Center Smithsonian National Zoo & Conservation Biology Institute Front Royal VA USA
| | - Camille Piponiot
- Conservation Ecology Center Smithsonian National Zoo & Conservation Biology Institute Front Royal VA USA
- Forest Global Earth Observatory Smithsonian Tropical Research Institute Panama Panama
- UR Forests and Societies Cirad Univ Montpellier Montpellier France
| | - Mauro Lepore
- Forest Global Earth Observatory Smithsonian Institution Washington DC USA
| | - Valentine Herrmann
- Conservation Ecology Center Smithsonian National Zoo & Conservation Biology Institute Front Royal VA USA
| | - James A. Lutz
- Wildland Resources Department Utah State University Logan UT USA
| | | | | | - Gregory S. Gilbert
- Department of Environmental Studies University of California Santa Cruz CA USA
| | - Fangliang He
- Biodiversity & Landscape Modeling Group University of Alberta Edmonton AB Canada
| | - Michael Heym
- Faculty of Forest Science and Resource Management Technical University of Munich Freising Germany
| | - Alejandra I. Huerta
- Deptartment of Entomology and Plant Pathology North Carolina State University Raleigh NC USA
| | - Patrick A. Jansen
- Forest Global Earth Observatory Smithsonian Tropical Research Institute Panama Panama
- Department of Environmental Sciences Wageningen University Wageningen Netherlands
| | - Daniel J. Johnson
- School of Forest, Fisheries, and Geomatics Sciences University of Florida Gainesville FL USA
| | - Nikolai Knapp
- Helmholtz Centre for Environmental Research – UFZ Leipzig Germany
- Thünen Institute of Forest Ecosystems Eberswalde Germany
| | - Kamil Král
- Department of Forest Ecology Silva Tarouca Research Institute Brno Czech Republic
| | - Dunmei Lin
- Key Laboratory of the Three Gorges Reservoir Region's Eco‐Environment, Ministry of Education Chongqing University Chongqing China
| | - Yadvinder Malhi
- School of Geography and the Environment University of Oxford Oxford UK
| | | | | | | | | | - Sabrina E. Russo
- School of Biological Sciences University of Nebraska Lincoln NE USA
- University of Nebraska–Lincoln Lincoln NE USA
| | - Jessica Shue
- Smithsonian Environmental Research Center Edgewater MD USA
| | - Xugao Wang
- Institute of Applied Ecology Chinese Academy of Sciences Shenyang China
| | - Amy Wolf
- Natural & Applied Sciences University of Wisconsin Green Bay WI USA
| | - Tonghui Yang
- Forestry Institute Ningbo Academy of Agricultural Science Ningbo China
| | - Stuart J. Davies
- Forest Global Earth Observatory Smithsonian Tropical Research Institute Panama Panama
| | - Kristina J. Anderson‐Teixeira
- Conservation Ecology Center Smithsonian National Zoo & Conservation Biology Institute Front Royal VA USA
- Forest Global Earth Observatory Smithsonian Tropical Research Institute Panama Panama
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7
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Height–diameter allometry in African monodominant forest close to mixed forest. JOURNAL OF TROPICAL ECOLOGY 2021. [DOI: 10.1017/s0266467421000183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
AbstractAfrican monodominant forests are frequently formed by Gilbertiodendron dewevrei (De Wild.) J. Leonard and commonly found close to mixed forests. However, previous studies have ignored differences between these two forest types in height–diameter allometry, which is extremely important for aboveground biomass (AGB) estimates. This study aims to evaluate the performance of height–diameter models and their effects on height attributes and AGB estimations in African monodominant and mixed forests. Four 1-ha plots divided in 16 subplots (0.25 ha) were installed in each forest type in northern Republic of Congo. We measured diameter of all trees ≥ 10 cm diameter for each subplot and we measured the height of 264 trees over a large range of 7–64 m in two forest types. There was a significant difference in height–diameter allometry between two forest types and trees were taller and had greater AGB in monodominant forests than in mixed forests. Two height–diameter models from the literature generated the lowest error values when predicting tree height and AGB in mixed forests, whereas no model derived from the literature was appropriate for monodominant forests. The variation in height–diameter allometry between monodominant and mixed forests influences AGB estimates that have practical implications for carbon monitoring.
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8
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Bennett AC, Dargie GC, Cuni-Sanchez A, Tshibamba Mukendi J, Hubau W, Mukinzi JM, Phillips OL, Malhi Y, Sullivan MJP, Cooper DLM, Adu-Bredu S, Affum-Baffoe K, Amani CA, Banin LF, Beeckman H, Begne SK, Bocko YE, Boeckx P, Bogaert J, Brncic T, Chezeaux E, Clark CJ, Daniels AK, de Haulleville T, Djuikouo Kamdem MN, Doucet JL, Evouna Ondo F, Ewango CEN, Feldpausch TR, Foli EG, Gonmadje C, Hall JS, Hardy OJ, Harris DJ, Ifo SA, Jeffery KJ, Kearsley E, Leal M, Levesley A, Makana JR, Mbayu Lukasu F, Medjibe VP, Mihindu V, Moore S, Nssi Begone N, Pickavance GC, Poulsen JR, Reitsma J, Sonké B, Sunderland TCH, Taedoumg H, Talbot J, Tuagben DS, Umunay PM, Verbeeck H, Vleminckx J, White LJT, Woell H, Woods JT, Zemagho L, Lewis SL. Resistance of African tropical forests to an extreme climate anomaly. Proc Natl Acad Sci U S A 2021; 118:e2003169118. [PMID: 34001597 PMCID: PMC8166131 DOI: 10.1073/pnas.2003169118] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The responses of tropical forests to environmental change are critical uncertainties in predicting the future impacts of climate change. The positive phase of the 2015-2016 El Niño Southern Oscillation resulted in unprecedented heat and low precipitation in the tropics with substantial impacts on the global carbon cycle. The role of African tropical forests is uncertain as their responses to short-term drought and temperature anomalies have yet to be determined using on-the-ground measurements. African tropical forests may be particularly sensitive because they exist in relatively dry conditions compared with Amazonian or Asian forests, or they may be more resistant because of an abundance of drought-adapted species. Here, we report responses of structurally intact old-growth lowland tropical forests inventoried within the African Tropical Rainforest Observatory Network (AfriTRON). We use 100 long-term inventory plots from six countries each measured at least twice prior to and once following the 2015-2016 El Niño event. These plots experienced the highest temperatures and driest conditions on record. The record temperature did not significantly reduce carbon gains from tree growth or significantly increase carbon losses from tree mortality, but the record drought did significantly decrease net carbon uptake. Overall, the long-term biomass increase of these forests was reduced due to the El Niño event, but these plots remained a live biomass carbon sink (0.51 ± 0.40 Mg C ha-1 y-1) despite extreme environmental conditions. Our analyses, while limited to African tropical forests, suggest they may be more resistant to climatic extremes than Amazonian and Asian forests.
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Affiliation(s)
- Amy C Bennett
- School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom;
| | - Greta C Dargie
- School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom
| | - Aida Cuni-Sanchez
- Department of Environment and Geography, University of York, York, YO10 5NG, United Kingdom
- Department of Geography, University College London, London, WC1E 6BT, United Kingdom
| | - John Tshibamba Mukendi
- Service of Wood Biology, Royal Museum for Central Africa, Tervuren, 3080 Belgium
- Faculté de Gestion de Ressources Naturelles Renouvelables, Université de Kisangani, Kisangani, R408, Democratic Republic of Congo
- Faculté des Sciences Appliquées, Université de Mbujimayi, Mbujimayi, Democratic Republic of Congo
| | - Wannes Hubau
- School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom
- Service of Wood Biology, Royal Museum for Central Africa, Tervuren, 3080 Belgium
- Department of Environment, Laboratory of Wood Technology, Ghent University, 9000 Ghent, Belgium
| | - Jacques M Mukinzi
- Democratic Republic of Congo Programme, Wildlife Conservation Society, Kinshasa, Democratic Republic of Congo
- Salonga National Park, Kinshasa, Democratic Republic of Congo
- World Wide Fund for Nature, 1196 Gland, Switzerland
| | - Oliver L Phillips
- School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom
| | - Yadvinder Malhi
- Environmental Change Institute, School of Geography and the Environment, Oxford University, Oxford, OX1 3QY, United Kingdom
| | - Martin J P Sullivan
- School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom
- Department of Natural Sciences, Manchester Metropolitan University, Manchester, M15 6BH, United Kingdom
| | - Declan L M Cooper
- Department of Geography, University College London, London, WC1E 6BT, United Kingdom
| | | | | | - Christian A Amani
- Université Officielle de Bukavu, Bukavu, Democratic Republic of Congo
- Center for International Forestry Research (CIFOR), Bogor 16115, Indonesia
| | - Lindsay F Banin
- Centre for Ecology and Hydrology, Penicuik, EH26 0QB, United Kingdom
| | - Hans Beeckman
- Service of Wood Biology, Royal Museum for Central Africa, Tervuren, 3080 Belgium
| | - Serge K Begne
- School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom
- Plant Systematic and Ecology Laboratory, Higher Teachers' Training College, University of Yaounde I, Yaounde, Cameroon
| | - Yannick E Bocko
- Faculté des Sciences et Techniques, Laboratoire de Botanique et Ecologie, Université Marien Ngouabi, Brazzaville, Republic of Congo
| | - Pascal Boeckx
- Isotope Bioscience Laboratory (ISOFYS), Ghent University, 9000 Ghent, Belgium
| | - Jan Bogaert
- Biodiversity and Landscape Unit, Gembloux Agro-Bio Tech, Université de Liège, 5030 Gembloux, Belgium
| | - Terry Brncic
- Congo Programme, Wildlife Conservation Society, Brazzaville, Republic of Congo
| | | | - Connie J Clark
- Nicholas School of the Environment, Duke University, Durham, NC 27710
| | - Armandu K Daniels
- Forestry Development Authority of the Government of Liberia (FDA), Monrovia, Liberia
| | | | - Marie-Noël Djuikouo Kamdem
- Plant Systematic and Ecology Laboratory, Higher Teachers' Training College, University of Yaounde I, Yaounde, Cameroon
- Faculty of Science, Department of Botany and Plant Physiology, University of Buea, Buea, Cameroon
| | - Jean-Louis Doucet
- TERRA Teaching and Research Centre, Forest Is Life, Gembloux Agro-Bio Tech, University of Liège, 5030 Gembloux, Belgium
| | | | - Corneille E N Ewango
- Faculté de Gestion de Ressources Naturelles Renouvelables, Université de Kisangani, Kisangani, R408, Democratic Republic of Congo
- Democratic Republic of Congo Programme, Wildlife Conservation Society, Kinshasa, Democratic Republic of Congo
- Centre de Formation et de Recherche en Conservation Forestiere (CEFRECOF), Epulu, Democratic Republic of Congo
| | - Ted R Feldpausch
- Geography, College of Life and Environmental Sciences, University of Exeter, Exeter, EX4 4QE, United Kingdom
| | - Ernest G Foli
- Forestry Research Institute of Ghana (FORIG), Kumasi, Ghana
| | | | - Jefferson S Hall
- Forest Global Earth Observatory, Smithsonian Tropical Research Institute, Washington, DC 20560
| | - Olivier J Hardy
- Evolutionary Biology and Ecology, Faculté des Sciences, Université Libre de Bruxelles, 1050 Bruxelles, Belgium
| | - David J Harris
- Royal Botanic Garden Edinburgh, Edinburgh, EH3 5NZ, United Kingdom
| | - Suspense A Ifo
- École Normale Supérieure, Département des Sciences et Vie de la Terre, Laboratoire de Géomatique et d'Ecologie Tropicale Appliquée, Université Marien Ngouabi, Brazzaville, Republic of Congo
| | - Kathryn J Jeffery
- Biological and Environmental Sciences, University of Stirling, Stirling, FK9 4LA, United Kingdom
| | - Elizabeth Kearsley
- Department of Environment, Laboratory of Wood Technology, Ghent University, 9000 Ghent, Belgium
- Department of Environment, Computational & Applied Vegetation Ecology (Cavelab), Ghent University, 9000 Ghent, Belgium
| | - Miguel Leal
- Uganda Programme, Wildlife Conservation Society, Kampala, Uganda
| | - Aurora Levesley
- School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom
| | - Jean-Remy Makana
- Faculté des Sciences, Laboratoire d'écologie et aménagement forestier, Université de Kisangani, Kisangani, Democratic Republic of Congo
| | - Faustin Mbayu Lukasu
- Faculté de Gestion de Ressources Naturelles Renouvelables, Université de Kisangani, Kisangani, R408, Democratic Republic of Congo
| | | | - Vianet Mihindu
- Commission of Central African Forests (COMIFAC), Yaounde, Cameroon
- Agence Nationale des Parcs Nationaux, Libreville, Gabon
| | - Sam Moore
- Environmental Change Institute, School of Geography and the Environment, Oxford University, Oxford, OX1 3QY, United Kingdom
| | | | | | | | - Jan Reitsma
- Bureau Waardenburg, 4101 CK Culemborg, The Netherlands
| | - Bonaventure Sonké
- Plant Systematic and Ecology Laboratory, Higher Teachers' Training College, University of Yaounde I, Yaounde, Cameroon
| | - Terry C H Sunderland
- Center for International Forestry Research (CIFOR), Bogor 16115, Indonesia
- Faculty of Forestry, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Hermann Taedoumg
- Plant Systematic and Ecology Laboratory, Higher Teachers' Training College, University of Yaounde I, Yaounde, Cameroon
- Biodiversity International, Yaounde, Cameroon
| | - Joey Talbot
- School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom
- Institute for Transport Studies, University of Leeds, Leeds, LS2 9JT, United Kingdom
| | - Darlington S Tuagben
- Forestry Development Authority of the Government of Liberia (FDA), Monrovia, Liberia
| | - Peter M Umunay
- Yale School of Forestry & Environmental Studies, Yale University, New Haven, CT 06511
- Wildlife Conservation Society, New York, NY 11224
| | - Hans Verbeeck
- Department of Environment, Computational & Applied Vegetation Ecology (Cavelab), Ghent University, 9000 Ghent, Belgium
| | - Jason Vleminckx
- International Center for Tropical Botany, Department of Biological Sciences, Florida International University, University Park, FL 33199
- Faculté des Sciences, Service d'Évolution Biologique et écologie, Université Libre de Bruxelles, 1050 Bruxelles, Belgium
| | - Lee J T White
- Biological and Environmental Sciences, University of Stirling, Stirling, FK9 4LA, United Kingdom
- Ministry of Forests, Seas, Environment and Climate, Libreville, Gabon
- Institut de Recherche en Ecologie Tropicale, Libreville, Gabon
| | | | - John T Woods
- William R. Tolbert, Jr. College of Agriculture and Forestry, University of Liberia, Monrovia, Liberia
| | - Lise Zemagho
- Université Officielle de Bukavu, Bukavu, Democratic Republic of Congo
| | - Simon L Lewis
- School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom
- Department of Geography, University College London, London, WC1E 6BT, United Kingdom
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9
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Prediction of Forest Aboveground Biomass Using Multitemporal Multispectral Remote Sensing Data. REMOTE SENSING 2021. [DOI: 10.3390/rs13071282] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Forest aboveground biomass (AGB) is a prime forest parameter that requires global level estimates to study the global carbon cycle. Light detection and ranging (LiDAR) is the state-of-the-art technology for AGB prediction but it is expensive, and its coverage is restricted to small areas. On the contrary, spaceborne Earth observation data are effective and economical information sources to estimate and monitor AGB at a large scale. In this paper, we present a study on the use of different spaceborne multispectral remote sensing data for the prediction of forest AGB. The objective is to evaluate the effects of temporal, spectral, and spatial capacities of multispectral satellite data for AGB prediction. The study was performed on multispectral data acquired by Sentinel-2, RapidEye, and Dove satellites which are characterized by different spatial resolutions, temporal availability, and number of spectral bands. A systematic process of least absolute shrinkage and selection operator (lasso) variable selection generalized linear modeling, leave-one-out cross-validation, and analysis was accomplished on each satellite dataset for AGB prediction. Results point out that the multitemporal data based AGB models were more effective in prediction than the single-time models. In addition, red-edge and short wave infrared (SWIR) channel dependent variables showed significant improvement in the modeling results and contributed to more than 50% of the selected variables. Results also suggest that high spatial resolution plays a smaller role than spectral and temporal information in the prediction of AGB. The overall analysis emphasizes a good potential of spaceborne multispectral data for developing sophisticated methods for AGB prediction especially with specific spectral channels and temporal information.
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10
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Use of Remotely Sensed Data to Enhance Estimation of Aboveground Biomass for the Dry Afromontane Forest in South-Central Ethiopia. REMOTE SENSING 2020. [DOI: 10.3390/rs12203335] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Periodic assessment of forest aboveground biomass (AGB) is essential to regulate the impacts of the changing climate. However, AGB estimation using field-based sample survey (FBSS) has limited precision due to cost and accessibility constraints. Fortunately, remote sensing technologies assist to improve AGB estimation precisions. Thus, this study assessed the role of remotely sensed (RS) data in improving the precision of AGB estimation in an Afromontane forest in south-central Ethiopia. The research objectives were to identify RS variables that are useful for estimating AGB and evaluate the extent of improvement in the precision of the remote sensing-assisted AGB estimates beyond the precision of a pure FBSS. Reference AGB data for model calibration and estimation were collected from 111 systematically distributed circular sample plots (SPs) of 1000 m2 area. Independent variables were derived from Landsat-8, Sentinel-2 and PlanetScope images acquired in January 2019. The area-weighted mean and standard deviation of the spectral reflectance, spectral index and texture (only for PlanetScope) variables were extracted for each SP. A maximum of two independent variables from each image type was fitted to a generalized linear model for AGB estimation using model-assisted estimators. The results of this study revealed that the Landsat-8 model with the predictor variable of shortwave infrared band reflectance and the PlanetScope model with the predictor variable of green band reflectance had estimation efficiency of 1.40 and 1.37, respectively. Similarly, the Sentinel-2 model, which had predictor variables of shortwave infrared reflectance and standard deviation of green leaf index, improved AGB estimation with the relative efficiency of 1.68. Utilizing freely available Sentinel-2 data seems to enhance the AGB estimation efficiency and reduce cost and extensive fieldwork in inaccessible areas.
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11
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Jackson TD, Shenkin AF, Majalap N, Bin Jami J, Bin Sailim A, Reynolds G, Coomes DA, Chandler CJ, Boyd DS, Burt A, Wilkes P, Disney M, Malhi Y. The mechanical stability of the world’s tallest broadleaf trees. Biotropica 2020. [DOI: 10.1111/btp.12850] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Tobias D. Jackson
- Forest Ecology and Conservation Group Department of Plant Sciences University of Cambridge Cambridge UK
- Environmental Change Institute School of Geography and the Environment University of Oxford Oxford UK
| | - Alexander F. Shenkin
- Environmental Change Institute School of Geography and the Environment University of Oxford Oxford UK
| | - Noreen Majalap
- Phytochemistry UnitForest Research Centre Sabah Malaysia
| | | | - Azlin Bin Sailim
- South East Asia Rainforest Research Partnership (SEARRP) Sabah Malaysia
| | - Glen Reynolds
- South East Asia Rainforest Research Partnership (SEARRP) Sabah Malaysia
| | - David A. Coomes
- Forest Ecology and Conservation Group Department of Plant Sciences University of Cambridge Cambridge UK
| | | | - Doreen S. Boyd
- School of Geography University of Nottingham Nottingham UK
| | - Andy Burt
- Department of Geography University College London London UK
| | - Phil Wilkes
- Department of Geography University College London London UK
- NERC National Centre for Earth Observation (NCEO) Leicester UK
| | - Mathias Disney
- Department of Geography University College London London UK
- NERC National Centre for Earth Observation (NCEO) Leicester UK
| | - Yadvinder Malhi
- Environmental Change Institute School of Geography and the Environment University of Oxford Oxford UK
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Sullivan MJP, Lewis SL, Affum-Baffoe K, Castilho C, Costa F, Sanchez AC, Ewango CEN, Hubau W, Marimon B, Monteagudo-Mendoza A, Qie L, Sonké B, Martinez RV, Baker TR, Brienen RJW, Feldpausch TR, Galbraith D, Gloor M, Malhi Y, Aiba SI, Alexiades MN, Almeida EC, de Oliveira EA, Dávila EÁ, Loayza PA, Andrade A, Vieira SA, Aragão LEOC, Araujo-Murakami A, Arets EJMM, Arroyo L, Ashton P, Aymard C. G, Baccaro FB, Banin LF, Baraloto C, Camargo PB, Barlow J, Barroso J, Bastin JF, Batterman SA, Beeckman H, Begne SK, Bennett AC, Berenguer E, Berry N, Blanc L, Boeckx P, Bogaert J, Bonal D, Bongers F, Bradford M, Brearley FQ, Brncic T, Brown F, Burban B, Camargo JL, Castro W, Céron C, Ribeiro SC, Moscoso VC, Chave J, Chezeaux E, Clark CJ, de Souza FC, Collins M, Comiskey JA, Valverde FC, Medina MC, da Costa L, Dančák M, Dargie GC, Davies S, Cardozo ND, de Haulleville T, de Medeiros MB, del Aguila Pasquel J, Derroire G, Di Fiore A, Doucet JL, Dourdain A, Droissart V, Duque LF, Ekoungoulou R, Elias F, Erwin T, Esquivel-Muelbert A, Fauset S, Ferreira J, Llampazo GF, Foli E, Ford A, Gilpin M, Hall JS, Hamer KC, Hamilton AC, Harris DJ, Hart TB, Hédl R, Herault B, Herrera R, Higuchi N, Hladik A, Coronado EH, Huamantupa-Chuquimaco I, Huasco WH, Jeffery KJ, Jimenez-Rojas E, Kalamandeen M, Djuikouo MNK, Kearsley E, Umetsu RK, Kho LK, Killeen T, Kitayama K, Klitgaard B, Koch A, Labrière N, Laurance W, Laurance S, Leal ME, Levesley A, Lima AJN, Lisingo J, Lopes AP, Lopez-Gonzalez G, Lovejoy T, Lovett JC, Lowe R, Magnusson WE, Malumbres-Olarte J, Manzatto ÂG, Marimon BH, Marshall AR, Marthews T, de Almeida Reis SM, Maycock C, Melgaço K, Mendoza C, Metali F, Mihindou V, Milliken W, Mitchard ETA, Morandi PS, Mossman HL, Nagy L, Nascimento H, Neill D, Nilus R, Vargas PN, Palacios W, Camacho NP, Peacock J, Pendry C, Peñuela Mora MC, Pickavance GC, Pipoly J, Pitman N, Playfair M, Poorter L, Poulsen JR, Poulsen AD, Preziosi R, Prieto A, Primack RB, Ramírez-Angulo H, Reitsma J, Réjou-Méchain M, Correa ZR, de Sousa TR, Bayona LR, Roopsind A, Rudas A, Rutishauser E, Abu Salim K, Salomão RP, Schietti J, Sheil D, Silva RC, Espejo JS, Valeria CS, Silveira M, Simo-Droissart M, Simon MF, Singh J, Soto Shareva YC, Stahl C, Stropp J, Sukri R, Sunderland T, Svátek M, Swaine MD, Swamy V, Taedoumg H, Talbot J, Taplin J, Taylor D, ter Steege H, Terborgh J, Thomas R, Thomas SC, Torres-Lezama A, Umunay P, Gamarra LV, van der Heijden G, van der Hout P, van der Meer P, van Nieuwstadt M, Verbeeck H, Vernimmen R, Vicentini A, Vieira ICG, Torre EV, Vleminckx J, Vos V, Wang O, White LJT, Willcock S, Woods JT, Wortel V, Young K, Zagt R, Zemagho L, Zuidema PA, Zwerts JA, Phillips OL. Long-term thermal sensitivity of Earth’s tropical forests. Science 2020; 368:869-874. [DOI: 10.1126/science.aaw7578] [Citation(s) in RCA: 121] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 03/05/2020] [Indexed: 01/21/2023]
Affiliation(s)
- Martin J. P. Sullivan
- School of Geography, University of Leeds, Leeds, UK
- Department of Natural Sciences, Manchester Metropolitan University, Manchester, UK
| | - Simon L. Lewis
- School of Geography, University of Leeds, Leeds, UK
- Department of Geography, University College London, London, UK
| | | | - Carolina Castilho
- Embrapa Roraima, Brazilian Agricultural Research Corporation (EMBRAPA), Brasília, Brazil
| | - Flávia Costa
- Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | - Aida Cuni Sanchez
- Department of Ecosystem Science and Sustainability, Colorado State University, Fort Collins, CO, USA
- Department of Environment and Geography, University of York, York, UK
| | - Corneille E. N. Ewango
- DR Congo Programme, Wildlife Conservation Society, Kisangani, Democratic Republic of Congo
- Centre de Formation et de Recherche en Conservation Forestiere (CEFRECOF), Epulu, Democratic Republic of Congo
- Faculté de Gestion de Ressources Naturelles Renouvelables, Université de Kisangani, Kisangani, Democratic Republic of Congo
| | - Wannes Hubau
- School of Geography, University of Leeds, Leeds, UK
- Service of Wood Biology, Royal Museum for Central Africa, Tervuren, Belgium
- Department of Environment, Laboratory of Wood Technology (Woodlab), Ghent University, Ghent, Belgium
| | - Beatriz Marimon
- UNEMAT - Universidade do Estado de Mato Grosso, Nova Xavantina-MT, Brazil
| | | | - Lan Qie
- School of Life Sciences, University of Lincoln, Lincoln, UK
| | - Bonaventure Sonké
- Plant Systematics and Ecology Laboratory, Higher Teachers’ Training College, University of Yaoundé I, Yaoundé, Cameroon
| | | | | | | | - Ted R. Feldpausch
- Geography, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | | | - Manuel Gloor
- School of Geography, University of Leeds, Leeds, UK
| | - Yadvinder Malhi
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, UK
| | - Shin-Ichiro Aiba
- Faculty of Environmental Earth Science, Hokkaido University, Sapporo, Japan
| | | | - Everton C. Almeida
- Instituto de Biodiversidade e Florestas, Universidade Federal do Oeste do Pará, Santarém - PA, Brazil
| | | | - Esteban Álvarez Dávila
- Escuela de Ciencias Agrícolas, Pecuarias y del Medio Ambiente, National Open University and Distance, Bogotá, Colombia
| | | | - Ana Andrade
- Projeto Dinâmica Biológica de Fragmentos Florestais, Instituto Nacional de Pesquisas da Amazônia, Manaus, Brazil
| | | | - Luiz E. O. C. Aragão
- Geography, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
- National Institute for Space Research (INPE), São José dos Campos, SP, Brazil
| | - Alejandro Araujo-Murakami
- Museo de Historia Natural Noel Kempff Mercado, Universidad Autónoma Gabriel René Moreno, Santa Cruz, Bolivia
| | | | - Luzmila Arroyo
- Dirección de la Carrera de Biología, Universidad Autónoma Gabriel René Moreno, Santa Cruz, Bolivia
| | - Peter Ashton
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, USA
| | - Gerardo Aymard C.
- Programa de Ciencias del Agro y el Mar, Herbario Universitario, Guanare, Venezuela
| | | | | | - Christopher Baraloto
- International Center for Tropical Botany, Department of Biological Sciences, Florida International University, Miami, FL, USA
| | - Plínio Barbosa Camargo
- Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Jos Barlow
- Lancaster Environment Centre, Lancaster University, Lancaster, UK
| | - Jorcely Barroso
- Centro Multidisciplinar, Universidade Federal do Acre, Cruzeiro do Sul, AC, Brazil
| | - Jean-François Bastin
- Institure of Integrative Biology, ETH Zurich, Zurich, Switzerland
- Department of Environment, Computational and Applied Vegetation Ecology (CAVELab), Ghent University, Ghent, Belgium
| | - Sarah A. Batterman
- School of Geography, University of Leeds, Leeds, UK
- Priestley International Centre for Climate, University of Leeds, Leeds, UK
- Smithsonian Tropical Research Institute, Panama, Panama
- Cary Institute of Ecosystem Studies, Millbrook, NY, USA
| | - Hans Beeckman
- Service of Wood Biology, Royal Museum for Central Africa, Tervuren, Belgium
| | - Serge K. Begne
- School of Geography, University of Leeds, Leeds, UK
- Plant Systematics and Ecology Laboratory, Higher Teachers’ Training College, University of Yaoundé I, Yaoundé, Cameroon
| | | | - Erika Berenguer
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, UK
- Lancaster Environment Centre, Lancaster University, Lancaster, UK
| | | | - Lilian Blanc
- UR Forest and Societies, CIRAD, Montpellier, France
| | - Pascal Boeckx
- Isotope Bioscience Laboratory (ISOFYS), Ghent University, Ghent, Belgium
| | - Jan Bogaert
- Gembloux Agro-Bio Tech, University of Liège, Liège, Belgium
| | | | - Frans Bongers
- Forest Ecology and Forest Management Group, Wageningen University, Wageningen, Netherlands
| | | | - Francis Q. Brearley
- Department of Natural Sciences, Manchester Metropolitan University, Manchester, UK
| | - Terry Brncic
- Congo Programme, Wildlife Conservation Society, Brazzavile, Republic of Congo
| | | | - Benoit Burban
- INRAE, UMR EcoFoG, CNRS, CIRAD, AgroParisTech, Université des Antilles, Université de Guyane, 97310 Kourou, French Guiana
| | - José Luís Camargo
- Projeto Dinâmica Biológica de Fragmentos Florestais, Instituto Nacional de Pesquisas da Amazônia, Manaus, Brazil
| | - Wendeson Castro
- Programa de Pós-Graduação Ecologia e Manejo de Recursos Naturais, Universidade Federal do Acre, Rio Branco, AC, Brazil
| | - Carlos Céron
- Herbario Alfredo Paredes, Universidad Central del Ecuador, Quito, Ecuador
| | - Sabina Cerruto Ribeiro
- Centro de Ciências Biológicas e da Natureza, Universidade Federal do Acre, Rio Branco, AC, Brazil
| | | | - Jerôme Chave
- Laboratoire Évolution et Diversité Biologique, UMR 5174 (CNRS/IRD/UPS), CNRS, Toulouse, France
| | | | - Connie J. Clark
- Nicholas School of the Environment, Duke University, Durham, NC, USA
| | | | - Murray Collins
- Grantham Research Institute on Climate Change and the Environment, London, UK
- School of Geosciences, University of Edinburgh, Edinburgh, UK
| | - James A. Comiskey
- Inventory and Monitoring Program, National Park Service, Fredericksburg, VA, USA
- Smithsonian Institution, Washington, DC, USA
| | | | | | - Lola da Costa
- Instituto de Geociências, Faculdade de Meteorologia, Universidade Federal do Para, Belém, PA, Brazil
| | - Martin Dančák
- Faculty of Science, Department of Ecology and Environmental Sciences, Palacký University Olomouc, Olomouc, Czech Republic
| | | | - Stuart Davies
- Center for Tropical Forest Science, Smithsonian Tropical Research Institute, Panama, Panama
| | | | - Thales de Haulleville
- Service of Wood Biology, Royal Museum for Central Africa, Tervuren, Belgium
- Gembloux Agro-Bio Tech, University of Liège, Liège, Belgium
| | - Marcelo Brilhante de Medeiros
- Embrapa Genetic Resources and Biotechnology, Brazilian Agricultural Research Corporation (EMBRAPA), Brasília, Brazil
| | | | - Géraldine Derroire
- Cirad, UMR EcoFoG (AgroParisTech, CNRS, INRAE, Université des Antilles, Université de Guyane), Kourou, French Guiana
| | - Anthony Di Fiore
- Department of Anthropology, The University of Texas at Austin, Austin, TX, USA
| | - Jean-Louis Doucet
- Forest Resources Management, Gembloux Agro-Bio Tech, University of Liège, Liège, Belgium
| | - Aurélie Dourdain
- Cirad, UMR EcoFoG (AgroParisTech, CNRS, INRAE, Université des Antilles, Université de Guyane), Kourou, French Guiana
| | - Vincent Droissart
- AMAP, Universite de Montpellier, IRD, CNRS, CIRAD, INRAE, Montpellier, France
| | | | | | - Fernando Elias
- Institute of Biological Sciences, Universidade Federal do Pará, Belém, PA, Brazil
| | - Terry Erwin
- National Museum of Natural History, Smithsonian Institution, Washington, DC, USA
| | | | - Sophie Fauset
- School of Geography, Earth and Environmental Sciences, University of Plymouth, Plymouth, UK
| | - Joice Ferreira
- Embrapa Amazônia Oriental, Brazilian Agricultural Research Corporation (EMBRAPA), Brasília, Brazil
| | | | - Ernest Foli
- Forestry Research Institute of Ghana (FORIG), Kumasi, Ghana
| | | | | | - Jefferson S. Hall
- Smithsonian Institution Forest Global Earth Observatory (ForestGEO), Smithsonian Tropical Research Institute, Washington, DC, USA
| | | | | | | | - Terese B. Hart
- Lukuru Wildlife Research Foundation, Kinshasa, Democratic Republic of Congo
- Division of Vertebrate Zoology, Yale Peabody Museum of Natural History, New Haven, CT, USA
| | - Radim Hédl
- Institute of Botany, Czech Academy of Sciences, Brno, Czech Republic
- Department of Botany, Palacký University in Olomouc, Olomouc, Czech Republic
| | - Bruno Herault
- Isotope Bioscience Laboratory (ISOFYS), Ghent University, Ghent, Belgium
- CIRAD, UPR Forêts et Sociétés, Yamoussoukro, Côte d’Ivoire
- Institut National Polytechnique Félix Houphouët-Boigny, INP-HB, Yamoussoukro, Côte d’Ivoire
| | - Rafael Herrera
- Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Niro Higuchi
- Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | - Annette Hladik
- Département Hommes, Natures, Sociétés, Muséum National d'Histoire Naturel, Paris, France
| | | | | | | | - Kathryn J. Jeffery
- Biological and Environmental Sciences, University of Stirling, Stirling, UK
| | | | - Michelle Kalamandeen
- School of Geography, University of Leeds, Leeds, UK
- Living with Lakes Centre, Laurentian University, Sudbury, Canada
- Department of Plant Sciences, University of Cambridge, Cambridge, UK
| | - Marie Noël Kamdem Djuikouo
- Faculté de Gestion de Ressources Naturelles Renouvelables, Université de Kisangani, Kisangani, Democratic Republic of Congo
- Department of Environment, Laboratory of Wood Technology (Woodlab), Ghent University, Ghent, Belgium
- Plant Systematics and Ecology Laboratory, Higher Teachers’ Training College, University of Yaoundé I, Yaoundé, Cameroon
- Faculty of Science, Department of Botany and Plant Physiology, University of Buea, Buea, Cameroon
| | - Elizabeth Kearsley
- Department of Environment, Computational and Applied Vegetation Ecology (CAVELab), Ghent University, Ghent, Belgium
| | | | - Lip Khoon Kho
- Tropical Peat Research Institute, Malaysian Palm Oil Board, Selangor, Malaysia
| | | | | | | | - Alexander Koch
- Department of Earth Sciences, University of Hong Kong, Pok Ful Lam, Hong Kong Special Administrative Region, China
| | - Nicolas Labrière
- Laboratoire Évolution et Diversité Biologique, UMR 5174 (CNRS/IRD/UPS), CNRS, Toulouse, France
| | - William Laurance
- Centre for Tropical Environmental and Sustainability Science (TESS) and College of Marine and Environmental Sciences, James Cook University, Douglas, QLD, Australia
| | - Susan Laurance
- Centre for Tropical Environmental and Sustainability Science (TESS) and College of Marine and Environmental Sciences, James Cook University, Douglas, QLD, Australia
| | - Miguel E. Leal
- Uganda Programme, Wildlife Conservation Society, Kampala, Uganda
| | | | | | - Janvier Lisingo
- Faculté de Gestion de Ressources Naturelles Renouvelables, Université de Kisangani, Kisangani, Democratic Republic of Congo
| | - Aline P. Lopes
- National Institute for Space Research (INPE), São José dos Campos, SP, Brazil
| | | | - Tom Lovejoy
- Environmental Science and Policy, George Mason University, Fairfax, VA, USA
| | - Jon C. Lovett
- School of Geography, University of Leeds, Leeds, UK
- Royal Botanic Gardens Kew, Richmond, London, UK
| | - Richard Lowe
- Botany Department, University of Ibadan, Ibadan, Nigeria
| | - William E. Magnusson
- Coordenação da Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Mauaus, Brazil
| | - Jagoba Malumbres-Olarte
- cE3c – Centre for Ecology, Evolution and Environmental Changes / Azorean Biodiversity Group, Universidade dos Açores, Angra do Heroísmo, Azores, Portugal
- LIBRe – Laboratory for Integrative Biodiversity Research, Finnish Museum of Natural History, University of Helsinki, Helsinki, Finland
| | - Ângelo Gilberto Manzatto
- Laboratório de Biogeoquímica Ambiental Wolfgang C. Pfeiffer, Universidade Federal de Rondônia, Porto Velho - RO, Brazil
| | - Ben Hur Marimon
- Faculdade de Ciências Agrárias, Biológicas e Sociais Aplicadas, Universidad do Estado de Mato Grosso, Nova Xavantina-MT, Brazil
| | - Andrew R. Marshall
- Department of Environment and Geography, University of York, York, UK
- Tropical Forests and People Research Centre, University of the Sunshine Coast, Sippy Downs, QLD, Australia
- Flamingo Land Ltd., North Yorkshire, UK
| | - Toby Marthews
- UK Centre for Ecology and Hydrology, Wallingford, UK
| | - Simone Matias de Almeida Reis
- UNEMAT - Universidade do Estado de Mato Grosso, Nova Xavantina-MT, Brazil
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, UK
| | - Colin Maycock
- School of International Tropical Forestry, Universiti Malaysia Sabah, Kota Kinabalu, Malaysia
| | | | - Casimiro Mendoza
- Escuela de Ciencias Forestales, Unidad Académica del Trópico, Universidad Mayor de San Simón, Sacta, Bolivia
| | - Faizah Metali
- Faculty of Science, Universiti Brunei Darussalam, Brunei
| | - Vianet Mihindou
- Agence Nationale des Parcs Nationaux, Libreville, Gabon
- Ministère de la Forêt, de la Mer, de l'Environnement, Chargé du Plan Climat, Libreville, Gabon
| | | | | | - Paulo S. Morandi
- UNEMAT - Universidade do Estado de Mato Grosso, Nova Xavantina-MT, Brazil
| | - Hannah L. Mossman
- Department of Natural Sciences, Manchester Metropolitan University, Manchester, UK
| | - Laszlo Nagy
- Institute of Biology, University of Campinas, Campinas, SP, Brazil
| | | | - David Neill
- Facultad de Ingeniería Ambiental, Universidad Estatal Amazónica, Puyo, Pastaza, Ecuador
| | - Reuben Nilus
- Forest Research Centre, Sabah Forestry Department, Sepilok, Malaysia
| | - Percy Núñez Vargas
- Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Walter Palacios
- Carrera de Ingeniería Forestal, Universidad Tecnica del Norte, Ibarra, Ecuador
| | - Nadir Pallqui Camacho
- School of Geography, University of Leeds, Leeds, UK
- Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | | | | | | | | | - John Pipoly
- Public Communications and Outreach Group, Parks and Recreation Division, Oakland Park, FL, USA
| | - Nigel Pitman
- Keller Science Action Center, Field Museum, Chicago, IL, USA
| | - Maureen Playfair
- Centre for Agricultural Research in Suriname (CELOS), Paramaribo, Suriname
| | - Lourens Poorter
- Forest Ecology and Forest Management Group, Wageningen University, Wageningen, Netherlands
| | - John R. Poulsen
- Nicholas School of the Environment, Duke University, Durham, NC, USA
| | | | - Richard Preziosi
- Department of Natural Sciences, Manchester Metropolitan University, Manchester, UK
| | - Adriana Prieto
- Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Leticia, Colombia
| | | | - Hirma Ramírez-Angulo
- Institute of Research for Forestry Development (INDEFOR), Universidad de los Andes, Mérida, Venezuela
| | | | | | | | | | - Lily Rodriguez Bayona
- Centro de Conservacion, Investigacion y Manejo de Areas Naturales, CIMA Cordillera Azul, Lima, Peru
| | - Anand Roopsind
- Iwokrama International Centre for Rainforest Conservation and Development, Georgetown, Guyana
| | - Agustín Rudas
- Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Leticia, Colombia
| | - Ervan Rutishauser
- Smithsonian Tropical Research Institute, Panama, Panama
- Carboforexpert, Geneva, Switzerland
| | | | - Rafael P. Salomão
- Universidade Federal Rural da Amazônia/CAPES, Belém, PA, Brazil
- Museu Paraense Emílio Goeldi, Belém, PA, Brazil
| | - Juliana Schietti
- Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | - Douglas Sheil
- Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, Ås, Norway
| | - Richarlly C. Silva
- Centro de Ciências Biológicas e da Natureza, Universidade Federal do Acre, Rio Branco, AC, Brazil
- Instituto Federal do Acre, Rio Branco, AC, Brazil
| | | | | | - Marcos Silveira
- Centro de Ciências Biológicas e da Natureza, Universidade Federal do Acre, Rio Branco, AC, Brazil
| | - Murielle Simo-Droissart
- Plant Systematics and Ecology Laboratory, Higher Teachers’ Training College, University of Yaoundé I, Yaoundé, Cameroon
| | - Marcelo Fragomeni Simon
- Embrapa Genetic Resources and Biotechnology, Brazilian Agricultural Research Corporation (EMBRAPA), Brasília, Brazil
| | - James Singh
- Guyana Forestry Commission, Georgetown, Guyana
| | | | - Clement Stahl
- INRAE, UMR EcoFoG, CNRS, CIRAD, AgroParisTech, Université des Antilles, Université de Guyane, 97310 Kourou, French Guiana
| | - Juliana Stropp
- Departamento de Biogeografía y Cambio Global, Museo Nacional de Ciencias Naturales, Consejo Superior de Investigaciones Científicas (MNCN-CSIC), Madrid, Spain
| | - Rahayu Sukri
- Faculty of Science, Universiti Brunei Darussalam, Brunei
| | - Terry Sunderland
- Sustainable Landscapes and Food Systems, Center for International Forestry Research, Bogor, Indonesia
- Faculty of Forestry, University of British Columbia, Vancouver, Canada
| | - Martin Svátek
- Department of Forest Botany, Dendrology and Geobiocoenology, Mendel University in Brno, Brno, Czech Republic
| | - Michael D. Swaine
- Department of Plant and Soil Science, School of Biological Sciences, University of Aberdeen, Aberdeen, UK
| | - Varun Swamy
- Institute for Conservation Research, San Diego Zoo, San Diego, CA. USA
| | - Hermann Taedoumg
- Department of Plant Biology, Faculty of Sciences, University of Yaounde 1, Yaoundé, Cameroon
- Bioversity International, Yaoundé, Cameroon
| | - Joey Talbot
- School of Geography, University of Leeds, Leeds, UK
| | - James Taplin
- UK Research and Innovation, Innovate UK, London, UK
| | - David Taylor
- Department of Geography, National University of Singapore, Singapore
| | - Hans ter Steege
- Naturalis Biodiversity Center, Leiden, Netherlands
- Systems Ecology, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - John Terborgh
- Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Raquel Thomas
- Iwokrama International Centre for Rainforest Conservation and Development, Georgetown, Guyana
| | - Sean C. Thomas
- Faculty of Forestry, University of Toronto, Toronto, Canada
| | | | - Peter Umunay
- Wildlife Conservation Society, New York, NY, USA
- Yale School of Forestry and Environmental Studies, Yale University, New Haven, CT, USA
| | | | | | | | | | | | - Hans Verbeeck
- Department of Environment, Computational and Applied Vegetation Ecology (CAVELab), Ghent University, Ghent, Belgium
| | | | | | | | - Emilio Vilanova Torre
- School of Environmental and Forest Sciences, University of Washington, Seattle, OR, USA
| | - Jason Vleminckx
- International Center for Tropical Botany, Department of Biological Sciences, Florida International University, Miami, FL, USA
| | - Vincent Vos
- Centro de Investigación y Promoción del Campesinado, La Paz, Bolivia
- Universidad Autónoma del Beni José Ballivián, Riberalta, Bolivia
| | - Ophelia Wang
- School of Earth Sciences and Environmental Sustainability, Northern Arizona University, Flagstaff, AZ, USA
| | - Lee J. T. White
- Biological and Environmental Sciences, University of Stirling, Stirling, UK
- Agence Nationale des Parcs Nationaux, Libreville, Gabon
- Institut de Recherche en Ecologie Tropicale, Libreville, Gabon
| | - Simon Willcock
- School of Natural Sciences, University of Bangor, Bangor, UK
| | | | - Verginia Wortel
- Forest Management, Centre for Agricultural Research in Suriname (CELOS), Paramaribo, Suriname
| | - Kenneth Young
- Department of Geography and The Environment, University of Texas at Austin, Austin, TX, USA
| | | | - Lise Zemagho
- Plant Systematics and Ecology Laboratory, Higher Teachers’ Training College, University of Yaoundé I, Yaoundé, Cameroon
| | - Pieter A. Zuidema
- Forest Ecology and Forest Management Group, Wageningen University, Wageningen, Netherlands
| | - Joeri A. Zwerts
- Centre for Agricultural Research in Suriname (CELOS), Paramaribo, Suriname
- Utrecht University, Utrecht, Netherlands
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Canopy Height Estimation Using Sentinel Series Images through Machine Learning Models in a Mangrove Forest. REMOTE SENSING 2020. [DOI: 10.3390/rs12091519] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Canopy height serves as a good indicator of forest carbon content. Remote sensing-based direct estimations of canopy height are usually based on Light Detection and Ranging (LiDAR) or Synthetic Aperture Radar (SAR) interferometric data. LiDAR data is scarcely available for the Indian tropics, while Interferometric SAR data from commercial satellites are costly. High temporal decorrelation makes freely available Sentinel-1 interferometric data mostly unsuitable for tropical forests. Alternatively, other remote sensing and biophysical parameters have shown good correlation with forest canopy height. The study objective was to establish and validate a methodology by which forest canopy height can be estimated from SAR and optical remote sensing data using machine learning models i.e., Random Forest (RF) and Symbolic Regression (SR). Here, we analysed the potential of Sentinel-1 interferometric coherence and Sentinel-2 biophysical parameters to propose a new method for estimating canopy height in the study site of the Bhitarkanika wildlife sanctuary, which has mangrove forests. The results showed that interferometric coherence, and biophysical variables (Leaf Area Index (LAI) and Fraction of Vegetation Cover (FVC)) have reasonable correlation with canopy height. The RF model showed a Root Mean Squared Error (RMSE) of 1.57 m and R2 value of 0.60 between observed and predicted canopy heights; whereas, the SR model through genetic programming demonstrated better RMSE and R2 values of 1.48 and 0.62 m, respectively. The SR also established an interpretable model, which is not possible via any other machine learning algorithms. The FVC was found to be an essential variable for predicting forest canopy height. The canopy height maps correlated with ICESat-2 estimated canopy height, albeit modestly. The study demonstrated the effectiveness of Sentinel series data and the machine learning models in predicting canopy height. Therefore, in the absence of commercial and rare data sources, the methodology demonstrated here offers a plausible alternative for forest canopy height estimation.
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14
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Hubau W, Lewis SL, Phillips OL, Affum-Baffoe K, Beeckman H, Cuní-Sanchez A, Daniels AK, Ewango CEN, Fauset S, Mukinzi JM, Sheil D, Sonké B, Sullivan MJP, Sunderland TCH, Taedoumg H, Thomas SC, White LJT, Abernethy KA, Adu-Bredu S, Amani CA, Baker TR, Banin LF, Baya F, Begne SK, Bennett AC, Benedet F, Bitariho R, Bocko YE, Boeckx P, Boundja P, Brienen RJW, Brncic T, Chezeaux E, Chuyong GB, Clark CJ, Collins M, Comiskey JA, Coomes DA, Dargie GC, de Haulleville T, Kamdem MND, Doucet JL, Esquivel-Muelbert A, Feldpausch TR, Fofanah A, Foli EG, Gilpin M, Gloor E, Gonmadje C, Gourlet-Fleury S, Hall JS, Hamilton AC, Harris DJ, Hart TB, Hockemba MBN, Hladik A, Ifo SA, Jeffery KJ, Jucker T, Yakusu EK, Kearsley E, Kenfack D, Koch A, Leal ME, Levesley A, Lindsell JA, Lisingo J, Lopez-Gonzalez G, Lovett JC, Makana JR, Malhi Y, Marshall AR, Martin J, Martin EH, Mbayu FM, Medjibe VP, Mihindou V, Mitchard ETA, Moore S, Munishi PKT, Bengone NN, Ojo L, Ondo FE, Peh KSH, Pickavance GC, Poulsen AD, Poulsen JR, Qie L, Reitsma J, Rovero F, Swaine MD, Talbot J, Taplin J, Taylor DM, Thomas DW, Toirambe B, Mukendi JT, Tuagben D, Umunay PM, van der Heijden GMF, Verbeeck H, Vleminckx J, Willcock S, Wöll H, Woods JT, Zemagho L. Asynchronous carbon sink saturation in African and Amazonian tropical forests. Nature 2020; 579:80-87. [DOI: 10.1038/s41586-020-2035-0] [Citation(s) in RCA: 253] [Impact Index Per Article: 63.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Accepted: 12/19/2019] [Indexed: 11/09/2022]
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15
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Influence of Site-Specific Conditions on Estimation of Forest above Ground Biomass from Airborne Laser Scanning. FORESTS 2020. [DOI: 10.3390/f11030268] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Forest aboveground biomass (AGB) is an important variable in assessing carbon stock or ecosystem functioning, as well as for forest management. Among methods of forest AGB estimation laser scanning attracts attention because it allows for detailed measurements of forest structure. Here we evaluated variables that influence forest AGB estimation from airborne laser scanning (ALS), specifically characteristics of ALS inputs and of a derived canopy height model (CHM), and role of allometric equations (local vs. global models) relating tree height, stem diameter (DBH), and crown radius. We used individual tree detection approach and analyzed forest inventory together with ALS data acquired for 11 stream catchments with dominant Norway spruce forest cover in the Czech Republic. Results showed that the ALS input point densities (4–18 pt/m2) did not influence individual tree detection rates. Spatial resolution of the input CHM rasters had a greater impact, resulting in higher detection rates for CHMs with pixel size 0.5 m than 1.0 m for all tree height categories. In total 12 scenarios with different allometric equations for estimating stem DBH from ALS-derived tree height were used in empirical models for AGB estimation. Global DBH models tend to underestimate AGB in young stands and overestimate AGB in mature stands. Using different allometric equations can yield uncertainty in AGB estimates of between 16 and 84 tons per hectare, which in relative values corresponds to between 6% and 37% of the mean AGB per catchment. Therefore, allometric equations (mainly for DBH estimation) should be applied with care and we recommend, if possible, to establish one’s own site-specific models. If that is not feasible, the global allometric models developed here, from a broad variety of spruce forest sites, can be potentially applicable for the Central European region.
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16
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Elias F, Ferreira J, Lennox GD, Berenguer E, Ferreira S, Schwartz G, Melo LDO, Reis Júnior DN, Nascimento RO, Ferreira FN, Espirito-Santo F, Smith CC, Barlow J. Assessing the growth and climate sensitivity of secondary forests in highly deforested Amazonian landscapes. Ecology 2020; 101:e02954. [PMID: 31840235 DOI: 10.1002/ecy.2954] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 10/13/2019] [Accepted: 11/12/2019] [Indexed: 11/05/2022]
Abstract
Tropical forests hold 30% of Earth's terrestrial carbon and at least 60% of its terrestrial biodiversity, but forest loss and degradation are jeopardizing these ecosystems. Although the regrowth of secondary forests has the potential to offset some of the losses of carbon and biodiversity, it remains unclear if secondary regeneration will be affected by climate changes such as higher temperatures and more frequent extreme droughts. We used a data set of 10 repeated forest inventories spanning two decades (1999-2017) to investigate carbon and tree species recovery and how climate and landscape context influence carbon dynamics in an older secondary forest located in one of the oldest post-Columbian agricultural frontiers in the Brazilian Amazon. Carbon accumulation averaged 1.08 Mg·ha-1 ·yr-1 , and species richness was effectively constant over the studied period. Moreover, we provide evidence that secondary forests are vulnerable to drought stress: Carbon balance and growth rates were lower in drier periods. This contrasts with drought responses in primary forests, where changes in carbon dynamics are driven by increased stem mortality. These results highlight an important climate change-vegetation feedback, whereby the increasing dry-season lengths being observed across parts of Amazonia may reduce the effectiveness of secondary forests in sequestering carbon and mitigating climate change. In addition, the current rate of forest regrowth in this region was low compared with previous pan-tropical and Amazonian assessments-our secondary forests reached just 41.1% of the average carbon and 56% of the tree diversity in the nearest primary forests-suggesting that these areas are unlikely to return to their original levels on politically meaningful time scales.
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Affiliation(s)
- Fernando Elias
- Programa de Pós-Graduação em Ecologia, Instituto de Ciências Biológicas, Universidade Federal do Pará/Embrapa Amazônia Oriental, Belém, Pará, 66075-110, Brazil
| | - Joice Ferreira
- Programa de Pós-Graduação em Ecologia, Instituto de Ciências Biológicas, Universidade Federal do Pará/Embrapa Amazônia Oriental, Belém, Pará, 66075-110, Brazil.,Embrapa Amazônia Oriental, Belém, Pará, 66095-903, Brazil
| | - Gareth D Lennox
- Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, UK
| | - Erika Berenguer
- Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, UK.,Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, OX1 3QY, UK
| | | | | | | | - Denilson N Reis Júnior
- Departamento de Engenharia Florestal, Universidade Federal Rural da Amazônia, Belém, Pará, 66077-830, Brazil
| | - Rodrigo O Nascimento
- Programa de Pós-Graduação em Ciências Ambientais, Instituto de Geociências, Universidade Federal do Pará, Belém, Pará, 66075-110, Brazil
| | | | - Fernando Espirito-Santo
- Centre for Landscape and Climate Research, Leicester Institute of Space and Earth Observation, School of Geography, Geology and Environment, University of Leicester, University Road, Leicester, LE1 7RH, UK
| | - Charlotte C Smith
- Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, UK
| | - Jos Barlow
- Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, UK.,Universidade Federal de Lavras, Lavras, Minas Gerais, 37200-000, Brazil
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17
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Beirne C, Miao Z, Nuñez CL, Medjibe VP, Saatchi S, White LJT, Poulsen JR. Landscape-level validation of allometric relationships for carbon stock estimation reveals bias driven by soil type. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2019; 29:e01987. [PMID: 31359463 DOI: 10.1002/eap.1987] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 07/10/2019] [Accepted: 07/17/2019] [Indexed: 06/10/2023]
Abstract
Mitigation of climate change depends on accurate estimation and mapping of terrestrial carbon stocks, particularly in carbon dense tropical forests. Allometric equations can be used to robustly estimate biomass of tropical trees, but often require tree height, which is frequently unknown. Researchers and practitioners must, therefore, decide whether to directly measure a subset of tree heights to develop diameter : height (D:H) equations or rely on previously published generic equations. To date, studies comparing the two approaches have been spatially restricted and/or not randomly allocated across the landscape of interest, making the implications of deciding whether or not to measure tree heights difficult to determine. To address this issue, we use inventory data from a systematic-random forest inventory across Gabon (102 forest sites; 42,627 trees, including 7,036 height-measured trees). Using plot-specific models of D:H as a benchmark, we compare the performance of a suite of locally fitted and commonly used generic models (parameterized national, georegional, and pantropical equations) across a variety of scales, and assess which abiotic, anthropogenic, and topographical covariates contribute the most to bias in height estimation. We reveal marked spatial structure in the magnitude and direction of bias in tree height estimation using all generic models, due at least in part to soil type, which compounded to substantial error in site-level AGB estimates (of up to 38% or 150 Mg/ha). However, two generic pantropical models (Chave 2014; Feldpausch 2012) converged to within 2.5% of mean AGB at the landscape scale. Our results suggest that some (not all) pantropical equations can extrapolate AGB across large spatial scales with minimal bias in estimated mean AGB. However, extreme caution must be taken when interpreting the AGB estimates from generic models at the site-level as they fail to capture substantial spatial variation in D:H relationships, which could lead to dramatic under- or over-estimation of site-level carbon stocks. Validated allometric models derived at site- or soil-type-levels may be the best way to reduce such biases arising from landscape-level heterogeneity in D:H model fit in the Afrotropics.
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Affiliation(s)
- C Beirne
- Nicholas School of the Environment, Duke University, P.O. Box 90328, Durham, North Carolina, 27708, USA
| | - Z Miao
- Nicholas School of the Environment, Duke University, P.O. Box 90328, Durham, North Carolina, 27708, USA
| | - C L Nuñez
- Nicholas School of the Environment, Duke University, P.O. Box 90328, Durham, North Carolina, 27708, USA
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, 04103, Leipzig, Germany
| | - V P Medjibe
- Nicholas School of the Environment, Duke University, P.O. Box 90328, Durham, North Carolina, 27708, USA
| | - S Saatchi
- NASA Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California, 91109, USA
- Institute of Environment and Sustainability, University of California, Los Angeles, California, 90095, USA
| | - L J T White
- Agence Nationale des Parcs Nationaux, Batterie IV, BP. 20379, Libreville, Gabon
- Institut de Recherche en Ecologie Tropicale, BP. 13354, Libreville, Gabon
- African Forest Ecology Group, School of Natural Sciences, University of Stirling, Stirling, FK9 4LA, United Kingdom
| | - J R Poulsen
- Nicholas School of the Environment, Duke University, P.O. Box 90328, Durham, North Carolina, 27708, USA
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18
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Schepaschenko D, Chave J, Phillips OL, Lewis SL, Davies SJ, Réjou-Méchain M, Sist P, Scipal K, Perger C, Herault B, Labrière N, Hofhansl F, Affum-Baffoe K, Aleinikov A, Alonso A, Amani C, Araujo-Murakami A, Armston J, Arroyo L, Ascarrunz N, Azevedo C, Baker T, Bałazy R, Bedeau C, Berry N, Bilous AM, Bilous SY, Bissiengou P, Blanc L, Bobkova KS, Braslavskaya T, Brienen R, Burslem DFRP, Condit R, Cuni-Sanchez A, Danilina D, Del Castillo Torres D, Derroire G, Descroix L, Sotta ED, d'Oliveira MVN, Dresel C, Erwin T, Evdokimenko MD, Falck J, Feldpausch TR, Foli EG, Foster R, Fritz S, Garcia-Abril AD, Gornov A, Gornova M, Gothard-Bassébé E, Gourlet-Fleury S, Guedes M, Hamer KC, Susanty FH, Higuchi N, Coronado ENH, Hubau W, Hubbell S, Ilstedt U, Ivanov VV, Kanashiro M, Karlsson A, Karminov VN, Killeen T, Koffi JCK, Konovalova M, Kraxner F, Krejza J, Krisnawati H, Krivobokov LV, Kuznetsov MA, Lakyda I, Lakyda PI, Licona JC, Lucas RM, Lukina N, Lussetti D, Malhi Y, Manzanera JA, Marimon B, Junior BHM, Martinez RV, Martynenko OV, Matsala M, Matyashuk RK, Mazzei L, Memiaghe H, Mendoza C, Mendoza AM, Moroziuk OV, Mukhortova L, Musa S, Nazimova DI, Okuda T, Oliveira LC, Ontikov PV, Osipov AF, Pietsch S, Playfair M, Poulsen J, Radchenko VG, Rodney K, Rozak AH, Ruschel A, Rutishauser E, See L, Shchepashchenko M, Shevchenko N, Shvidenko A, Silveira M, Singh J, Sonké B, Souza C, Stereńczak K, Stonozhenko L, Sullivan MJP, Szatniewska J, Taedoumg H, Ter Steege H, Tikhonova E, Toledo M, Trefilova OV, Valbuena R, Gamarra LV, Vasiliev S, Vedrova EF, Verhovets SV, Vidal E, Vladimirova NA, Vleminckx J, Vos VA, Vozmitel FK, Wanek W, West TAP, Woell H, Woods JT, Wortel V, Yamada T, Nur Hajar ZS, Zo-Bi IC. The Forest Observation System, building a global reference dataset for remote sensing of forest biomass. Sci Data 2019; 6:198. [PMID: 31601817 PMCID: PMC6787017 DOI: 10.1038/s41597-019-0196-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 08/19/2019] [Indexed: 11/09/2022] Open
Abstract
Forest biomass is an essential indicator for monitoring the Earth's ecosystems and climate. It is a critical input to greenhouse gas accounting, estimation of carbon losses and forest degradation, assessment of renewable energy potential, and for developing climate change mitigation policies such as REDD+, among others. Wall-to-wall mapping of aboveground biomass (AGB) is now possible with satellite remote sensing (RS). However, RS methods require extant, up-to-date, reliable, representative and comparable in situ data for calibration and validation. Here, we present the Forest Observation System (FOS) initiative, an international cooperation to establish and maintain a global in situ forest biomass database. AGB and canopy height estimates with their associated uncertainties are derived at a 0.25 ha scale from field measurements made in permanent research plots across the world's forests. All plot estimates are geolocated and have a size that allows for direct comparison with many RS measurements. The FOS offers the potential to improve the accuracy of RS-based biomass products while developing new synergies between the RS and ground-based ecosystem research communities.
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Affiliation(s)
- Dmitry Schepaschenko
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria.
- Forestry faculty, Bauman Moscow State Technical University, Mytischi, 141005, Russia.
| | - Jérôme Chave
- Laboratoire Evolution et Diversité Biologique CNRS/Université Paul Sabatier, Toulouse, France
| | | | - Simon L Lewis
- School of Geography, University of Leeds, Leeds, LS2 9JT, UK
- University College London, 30 Guilford Street, London, WC1N 1EH, UK
| | - Stuart J Davies
- Forest Global Earth Observatory, Smithsonian Tropical Research Institute, P.O. Box 37012, Washington 20013, USA
| | | | - Plinio Sist
- CIRAD, Forêts et Sociétés, Campus International de Baillarguet, Montpellier, F-34398, France
- Forêts et Sociétés, Univ Montpellier, CIRAD, Montpellier, F-34398, France
| | - Klaus Scipal
- European Space Agency, ESTEC, Noordwijk, The Netherlands
| | - Christoph Perger
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
- Spatial Focus GmbH, Vienna, Austria
| | - Bruno Herault
- CIRAD, Forêts et Sociétés, Campus International de Baillarguet, Montpellier, F-34398, France
- Forêts et Sociétés, Univ Montpellier, CIRAD, Montpellier, F-34398, France
- Department Foresterie et Environnement (DFR FOREN), Institut National Polytechnique Félix Houphouët-Boigny, INP-HB, Yamoussoukro, BP 2661, Côte d'Ivoire
| | - Nicolas Labrière
- Laboratoire Evolution et Diversité Biologique CNRS/Université Paul Sabatier, Toulouse, France
| | - Florian Hofhansl
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
| | - Kofi Affum-Baffoe
- Mensuration Unit, Forestry Commission of Ghana, 4 Third Avenue Ridge, Kumasi, POB M434, Ghana
| | - Alexei Aleinikov
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Alfonso Alonso
- Smithsonian Conservation Biology Institute, 1100 Jefferson Dr SW, Suite 3123, Washington, DC, 20560-0705, USA
| | - Christian Amani
- Centre for International Forestry Research, CIFOR, Jalan CIFOR, Situ Gede, Bogor, 16115, Indonesia
| | | | - John Armston
- Department of Geographical Sciences, University of Maryland, 2181 Lefrak Hall, College Park, MD, 20742, USA
- Joint Remote Sensing Research Program, School of Earth and Environmental Sciences, University of Queensland, Chamberlain Building (35), Campbell Road, St Lucia Campus, Brisbane, 4072, Australia
| | - Luzmila Arroyo
- Museo de Historia Natural Noel Kempff Mercado, Universidad Autónoma Gabriel Rene Moreno Av. Irala 565 - casilla, 2489, Santa Cruz, Bolivia
| | - Nataly Ascarrunz
- IBIF, Instituto Boliviano de Investigacion Forestal, Av. 6 de agosto # 28, Km 14 doble via La Guardia, Santa Cruz, Casilla, 6204, Bolivia
| | - Celso Azevedo
- Embrapa, Rodovia AM 10, km 29, Manaus, AM, 69010-970, Brazil
| | - Timothy Baker
- School of Geography, University of Leeds, Leeds, LS2 9JT, UK
| | - Radomir Bałazy
- Forest Research Institute, Department of Geomatics, Braci Leśnej 3, Sękocin Stary, Raszyn, 05-090, Poland
| | - Caroline Bedeau
- ONF, ONF-Réserve de Montabo Cayenne Cedex, Cayenne, BP 7002; 97307, French Guiana
| | - Nicholas Berry
- The Landscapes and Livelihoods Group, 20 Chambers St, Edinburgh, EH1 1JZ, UK
| | - Andrii M Bilous
- National University of Life and Environmental Sciences of Ukraine, General Rodimtsev 19, Kyiv, 3041, Ukraine
| | - Svitlana Yu Bilous
- National University of Life and Environmental Sciences of Ukraine, General Rodimtsev 19, Kyiv, 3041, Ukraine
| | | | - Lilian Blanc
- CIRAD, Forêts et Sociétés, Campus International de Baillarguet, Montpellier, F-34398, France
- Forêts et Sociétés, Univ Montpellier, CIRAD, Montpellier, F-34398, France
| | - Kapitolina S Bobkova
- Institute of Biology, Komi Scientific Center, Ural Branch of Russian Academy of Sciences, Kommunisticheskaya 28, Syktyvkar, 167982, Russia
| | - Tatyana Braslavskaya
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Roel Brienen
- School of Geography, University of Leeds, Leeds, LS2 9JT, UK
| | - David F R P Burslem
- School of Biological Sciences, University of Aberdeen, Cruickshank Building, St Machar Drive, Aberdeen, AB24 3UU, UK
| | - Richard Condit
- Morton Arboretum, 4100 Illinois Rte. 53, Lisle, 60532, IL, USA
| | - Aida Cuni-Sanchez
- Department of Environment and Geography, University of York, Heslington, York, YO10 5NG, UK
| | - Dilshad Danilina
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Dennis Del Castillo Torres
- Instituto de Investigaciones de la Amazonía Peruana, Av. Abelardo Quiñones km 2.5, Iquitos, Apartado Postal 784, Peru
| | - Géraldine Derroire
- CIRAD, UMR EcoFoG, Campus Agronomique - BP 701, Kourou, 97387, France, French Guiana
| | - Laurent Descroix
- ONF, ONF-Réserve de Montabo Cayenne Cedex, Cayenne, BP 7002; 97307, French Guiana
| | - Eleneide Doff Sotta
- Embrapa, Rodovia Juscelino Kubitscheck, Km 5, no 2.600, Macapa, Caixa Postal 10, CEP: 68903-419, Brazil
| | | | - Christopher Dresel
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
- Spatial Focus GmbH, Vienna, Austria
| | - Terry Erwin
- SI Entomology, Smithsonian Institution, PO Box 37012, MRC 187, Washington, DC, DC 20013-7012, USA
| | - Mikhail D Evdokimenko
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Jan Falck
- Department Forest Ecology and Management, The Swedish University of Agricultural Sciences, SLU, Umeå, SE-901 83, Sweden
| | - Ted R Feldpausch
- Geography, College of Life and Environmental Sciences, University of Exeter,Laver Building, North Park Road, Exeter, EX4 4QE, UK
| | - Ernest G Foli
- Forestry Research Institute of Ghana, UP Box 63, KNUST, Kumasi, Ghana
| | - Robin Foster
- The Field Musium, 1400S Lake Shore Dr, Chicago, IL, 60605, USA
| | - Steffen Fritz
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
| | | | - Aleksey Gornov
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Maria Gornova
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Ernest Gothard-Bassébé
- Institut Centrafricain de Recherche Agronomique, ICRA, BP 122, Bangui, Central African Republic
| | - Sylvie Gourlet-Fleury
- CIRAD, Forêts et Sociétés, Campus International de Baillarguet, Montpellier, F-34398, France
- Forêts et Sociétés, Univ Montpellier, CIRAD, Montpellier, F-34398, France
| | - Marcelino Guedes
- Embrapa, Rodovia Juscelino Kubitscheck, Km 5, no 2.600, Macapa, Caixa Postal 10, CEP: 68903-419, Brazil
| | - Keith C Hamer
- School of Biology, University of Leeds, Leeds, LS2 9JT, UK
| | - Farida Herry Susanty
- FOERDIA, Forestry and Environment Research Development and Innovation Agency, Jalan Gunung Batu No 5, Bogor, 16610, Indonesia
| | - Niro Higuchi
- Instituto Nacional de Pesquisas da Amazônia - Coordenação de Pesquisas em Silvicultura Tropical, Manaus, 69060-001, Brazil
| | - Eurídice N Honorio Coronado
- Instituto de Investigaciones de la Amazonía Peruana, Av. Abelardo Quiñones km 2.5, Iquitos, Apartado Postal 784, Peru
| | - Wannes Hubau
- School of Geography, University of Leeds, Leeds, LS2 9JT, UK
- U Gent-Woodlab, Laboratory of Wood Technology, Department of Environment, Ghent University, Ghent, 9000, Belgium
| | - Stephen Hubbell
- Department of Ecology and Evolutionary Biology, University of California, 621 Charles E. Young Dr. South, Los Angeles, CA, 90095-1606, USA
| | - Ulrik Ilstedt
- Department Forest Ecology and Management, The Swedish University of Agricultural Sciences, SLU, Umeå, SE-901 83, Sweden
| | - Viktor V Ivanov
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Milton Kanashiro
- Embrapa Amazonia Oriental, Travessa Doutor Enéas Pinheiro, Belém, PA, 66095-903, Brazil
| | - Anders Karlsson
- Department Forest Ecology and Management, The Swedish University of Agricultural Sciences, SLU, Umeå, SE-901 83, Sweden
| | - Viktor N Karminov
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Timothy Killeen
- World Wildlife Fund, Calle Diego de Mendoza 299, Santa Cruz de la Sierra, Bolivia
| | | | - Maria Konovalova
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Florian Kraxner
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
| | - Jan Krejza
- Global Change Research Institute CAS, Bělidla 986/4a, Brno, 603 00, Czech Republic
| | - Haruni Krisnawati
- FOERDIA, Forestry and Environment Research Development and Innovation Agency, Jalan Gunung Batu No 5, Bogor, 16610, Indonesia
| | - Leonid V Krivobokov
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Mikhail A Kuznetsov
- Institute of Biology, Komi Scientific Center, Ural Branch of Russian Academy of Sciences, Kommunisticheskaya 28, Syktyvkar, 167982, Russia
| | - Ivan Lakyda
- National University of Life and Environmental Sciences of Ukraine, General Rodimtsev 19, Kyiv, 3041, Ukraine
| | - Petro I Lakyda
- National University of Life and Environmental Sciences of Ukraine, General Rodimtsev 19, Kyiv, 3041, Ukraine
| | - Juan Carlos Licona
- IBIF, Instituto Boliviano de Investigacion Forestal, Av. 6 de agosto # 28, Km 14 doble via La Guardia, Santa Cruz, Casilla, 6204, Bolivia
| | - Richard M Lucas
- Department of Geography and Earth Sciences, Aberystwyth University, Aberystwyth, SY23 3DB, UK
| | - Natalia Lukina
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Daniel Lussetti
- Department Forest Ecology and Management, The Swedish University of Agricultural Sciences, SLU, Umeå, SE-901 83, Sweden
| | - Yadvinder Malhi
- School of Geography and the Environment, University of Oxford, Oxford, OX1 3QY, UK
| | | | - Beatriz Marimon
- Laboratório de Ecologia Vegetal, Universidade do Estado de Mato Grosso, UNEMAT, Campus de Nova Xavantina, Nova Xavantina, Mato Grosso, 78.690-000, Brazil
| | - Ben Hur Marimon Junior
- Laboratório de Ecologia Vegetal, Universidade do Estado de Mato Grosso, UNEMAT, Campus de Nova Xavantina, Nova Xavantina, Mato Grosso, 78.690-000, Brazil
| | | | - Olga V Martynenko
- Russian Institute of Continuous Education in Forestry, Institutskaya 17, Pushkino, 141200, Russia
| | - Maksym Matsala
- National University of Life and Environmental Sciences of Ukraine, General Rodimtsev 19, Kyiv, 3041, Ukraine
| | - Raisa K Matyashuk
- Institute for Evolutionary Ecology of the National Academy of Sciences of Ukraine, Lebedev 37, Kyiv, 03143, Ukraine
| | - Lucas Mazzei
- Embrapa Amazonia Oriental, Travessa Doutor Enéas Pinheiro, Belém, PA, 66095-903, Brazil
| | - Hervé Memiaghe
- University of Oregon, 1585 E 13th Ave, Eugene, OR, 97403, USA
| | | | - Abel Monteagudo Mendoza
- Jardín Botánico de Missouri; Universidad Nacional de San Antonio Abad del Cusco, Oxapampa, Peru
| | - Olga V Moroziuk
- National University of Life and Environmental Sciences of Ukraine, General Rodimtsev 19, Kyiv, 3041, Ukraine
| | - Liudmila Mukhortova
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Samsudin Musa
- FRIM Forest Reserach Institute of Malaysia, 52109 Kepong, Selangor, Kuala Lumpur, Malaysia
| | - Dina I Nazimova
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Toshinori Okuda
- Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8521, Japan
| | | | - Petr V Ontikov
- Forestry faculty, Bauman Moscow State Technical University, Mytischi, 141005, Russia
| | - Andrey F Osipov
- Institute of Biology, Komi Scientific Center, Ural Branch of Russian Academy of Sciences, Kommunisticheskaya 28, Syktyvkar, 167982, Russia
| | - Stephan Pietsch
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
| | - Maureen Playfair
- Center for Agricultural research in Suriname, CELOS, 1914, Paramaribo, Suriname
| | - John Poulsen
- Nicholas School of the Environment, Duke University, P.O. Box 90328, Durham, NC, 27708, USA
| | - Vladimir G Radchenko
- Institute for Evolutionary Ecology of the National Academy of Sciences of Ukraine, Lebedev 37, Kyiv, 03143, Ukraine
| | - Kenneth Rodney
- IIC, The Iwokrama International Centre for Rain Forest Conservation and Development, 77 High Street, Georgetown, Guyana
| | - Andes H Rozak
- Cibodas Botanic Gardens - Indonesian Institute of Sciences (LIPI), Jl. Kebun Raya Cibodas, Cipanas, Cianjur, 43253, Indonesia
| | - Ademir Ruschel
- Embrapa Amazonia Oriental, Travessa Doutor Enéas Pinheiro, Belém, PA, 66095-903, Brazil
| | - Ervan Rutishauser
- Smithsonian Tropical Research Institute, Balboa, Ancon, Panama 3092, Panama
| | - Linda See
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
| | - Maria Shchepashchenko
- Russian Institute of Continuous Education in Forestry, Institutskaya 17, Pushkino, 141200, Russia
| | - Nikolay Shevchenko
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Anatoly Shvidenko
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Marcos Silveira
- Museu Universitário, Universidade Federal do Acre, BR 364, Km 04 - Distrito Industrial, Rio Branco, 69915-559, Brazil
| | - James Singh
- Guyana Forestry Commission, 1 Water Street, Kingston Georgetown, Guyana
| | - Bonaventure Sonké
- Plant Systematic and Ecology Laboratory, University of Yaoundé I, P.O. Box 047, Yaounde, Cameroon
| | - Cintia Souza
- Embrapa, Rodovia AM 10, km 29, Manaus, AM, 69010-970, Brazil
| | - Krzysztof Stereńczak
- Forest Research Institute, Department of Geomatics, Braci Leśnej 3, Sękocin Stary, Raszyn, 05-090, Poland
| | - Leonid Stonozhenko
- Russian Institute of Continuous Education in Forestry, Institutskaya 17, Pushkino, 141200, Russia
| | | | - Justyna Szatniewska
- Global Change Research Institute CAS, Bělidla 986/4a, Brno, 603 00, Czech Republic
| | - Hermann Taedoumg
- Plant Systematic and Ecology Laboratory, University of Yaoundé I, P.O. Box 047, Yaounde, Cameroon
- Bioversity international, P.O. Box 2008, Messa, Yaoundé, Cameroun
| | | | - Elena Tikhonova
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Marisol Toledo
- Museo de Historia Natural Noel Kempff Mercado, Universidad Autónoma Gabriel Rene Moreno Av. Irala 565 - casilla, 2489, Santa Cruz, Bolivia
| | - Olga V Trefilova
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Ruben Valbuena
- School of Natural Sciences, Bangor University, Thoday Building. Deiniol Rd, Bangor, LL57 2UW, United Kingdom
| | - Luis Valenzuela Gamarra
- Jardín Botánico de Missouri; Universidad Nacional de San Antonio Abad del Cusco, Oxapampa, Peru
| | - Sergey Vasiliev
- Forestry faculty, Bauman Moscow State Technical University, Mytischi, 141005, Russia
| | - Estella F Vedrova
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Sergey V Verhovets
- Siberian Federal University, Svobodnyy Ave, 79, Krasnoyarsk, 660041, Russia
- Reshetnev Siberian state university of science and technology, pr. Mira 82, Krasnoyarsk, 660049, Russia
| | - Edson Vidal
- Department of Forest Sciences, Luiz de Queiroz College of Agriculture, University of Sao Paolo, PO Box 9, Av. Pádua Dias, 11, Piracicaba, São Paulo, 13418-900, Brazil
| | - Nadezhda A Vladimirova
- State Nature Reserve Denezhkin Kamen, Lenina, 6, Sverdlovsk reg, Severouralsk, 624480, Russia
| | - Jason Vleminckx
- International Center for Tropical Botany, Department of Biological Sciences, Florida International University, 11200 S.W. 8th Street, Miami, 33199, FL, USA
| | | | - Foma K Vozmitel
- Forestry faculty, Bauman Moscow State Technical University, Mytischi, 141005, Russia
| | - Wolfgang Wanek
- Department of Microbiology and Ecosystem Science, Division of Terrestrial Ecosystem research, University of Vienna, Althanstrasse 14, Vienna, A-1090, Austria
| | - Thales A P West
- New Zealand Forest Research Institute (Scion) Te Papa Tipu Innovation Park, 49 Sala Street, Rotorua, 3046, New Zealand
| | - Hannsjorg Woell
- Unaffiliated (retired), Sommersbergseestrasse 291, Bad Aussee, 8990, Austria
| | - John T Woods
- W.R.T College of Agriculture and Forestry, University of Liberia, Capitol Hill, Monrovia, 9020, Liberia
| | - Verginia Wortel
- Center for Agricultural research in Suriname, CELOS, 1914, Paramaribo, Suriname
| | - Toshihiro Yamada
- Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8521, Japan
| | - Zamah Shari Nur Hajar
- FRIM Forest Research Institute of Malaysia, 52109 Kepong, Selangor, Kuala Lumpur, Malaysia
| | - Irié Casimir Zo-Bi
- Department Foresterie et Environnement (DFR FOREN), Institut National Polytechnique Félix Houphouët-Boigny, INP-HB, Yamoussoukro, BP 2661, Côte d'Ivoire
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19
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Fischer FJ, Maréchaux I, Chave J. Improving plant allometry by fusing forest models and remote sensing. THE NEW PHYTOLOGIST 2019; 223:1159-1165. [PMID: 30897214 DOI: 10.1111/nph.15810] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Accepted: 03/05/2019] [Indexed: 06/09/2023]
Abstract
Allometry determines how tree shape and function scale with each other, related through size. Allometric relationships help scale processes from the individual to the global scale and constitute a core component of vegetation models. Allometric relationships have been expected to emerge from optimisation theory, yet this does not suitably predict empirical data. Here we argue that the fusion of high-resolution data, such as those derived from airborne laser scanning, with individual-based forest modelling offers insight into how plant size contributes to large-scale biogeochemical processes. We review the challenges in allometric scaling, how they can be tackled by advances in data-model fusion, and how individual-based models can serve as data integrators for dynamic global vegetation models.
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Affiliation(s)
- Fabian Jörg Fischer
- Laboratoire Evolution et Diversité Biologique, UMR5174, CNRS-Université Paul Sabatier-IRD, Bâtiment 4R1, 118 route de Narbonne, F-31062, Toulouse Cedex 9, France
| | - Isabelle Maréchaux
- AMAP, INRA, IRD, CIRAD, CNRS, University of Montpellier, F-34000, Montpellier, France
| | - Jérôme Chave
- Laboratoire Evolution et Diversité Biologique, UMR5174, CNRS-Université Paul Sabatier-IRD, Bâtiment 4R1, 118 route de Narbonne, F-31062, Toulouse Cedex 9, France
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20
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Phillips J, Ramirez S, Wayson C, Duque A. Differences in carbon stocks along an elevational gradient in tropical mountain forests of Colombia. Biotropica 2019. [DOI: 10.1111/btp.12675] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Juan Phillips
- Sistema de Monitoreo de Bosques y Carbono Instituto de Hidrología, Meteorología y Estudios Ambientales Bogotá D.C Colombia
- Doctorado en Ecología Universidad Nacional de Colombia Medellín Colombia
| | - Sebastian Ramirez
- Departamento de Ciencias Forestales Universidad Nacional de Colombia Medellín Colombia
| | - Craig Wayson
- International Programs USDA Forest Service Washington District of Columbia
| | - Alvaro Duque
- Departamento de Ciencias Forestales Universidad Nacional de Colombia Medellín Colombia
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21
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Phillips OL, Sullivan MJP, Baker TR, Monteagudo Mendoza A, Vargas PN, Vásquez R. Species Matter: Wood Density Influences Tropical Forest Biomass at Multiple Scales. SURVEYS IN GEOPHYSICS 2019; 40:913-935. [PMID: 31395992 PMCID: PMC6647473 DOI: 10.1007/s10712-019-09540-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 05/06/2019] [Indexed: 05/17/2023]
Abstract
The mass of carbon contained in trees is governed by the volume and density of their wood. This represents a challenge to most remote sensing technologies, which typically detect surface structure and parameters related to wood volume but not to its density. Since wood density is largely determined by taxonomic identity this challenge is greatest in tropical forests where there are tens of thousands of tree species. Here, using pan-tropical literature and new analyses in Amazonia with plots with reliable identifications we assess the impact that species-related variation in wood density has on biomass estimates of mature tropical forests. We find impacts of species on forest biomass due to wood density at all scales from the individual tree up to the whole biome: variation in tree species composition regulates how much carbon forests can store. Even local differences in composition can cause variation in forest biomass and carbon density of 20% between subtly different local forest types, while additional large-scale floristic variation leads to variation in mean wood density of 10-30% across Amazonia and the tropics. Further, because species composition varies at all scales and even vertically within a stand, our analysis shows that bias and uncertainty always result if individual identity is ignored. Since sufficient inventory-based evidence based on botanical identification now exists to show that species composition matters biome-wide for biomass, we here assemble and provide mean basal-area-weighted wood density values for different forests across the lowand tropical biome. These range widely, from 0.467 to 0.728 g cm-3 with a pan-tropical mean of 0.619 g cm-3. Our analysis shows that mapping tropical ecosystem carbon always benefits from locally validated measurement of tree-by-tree botanical identity combined with tree-by-tree measurement of dimensions. Therefore whenever possible, efforts to map and monitor tropical forest carbon using remote sensing techniques should be combined with tree-level measurement of species identity by botanists working in inventory plots.
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Affiliation(s)
| | | | - Tim R. Baker
- School of Geography, University of Leeds, Leeds, LS2 9JT UK
| | | | - Percy Núñez Vargas
- Universidad de San Antonio Abad del Cusco, Av. de La Cultura 773, 08000 Cuzco, Peru
| | - Rodolfo Vásquez
- Jardín Botánico de Missouri, Jr. Bolognesi, 19230 Oxapampa, Peru
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22
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Analyzing the Uncertainty of Estimating Forest Aboveground Biomass Using Optical Imagery and Spaceborne LiDAR. REMOTE SENSING 2019. [DOI: 10.3390/rs11060722] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Accurate estimation of forest aboveground biomass (AGB) is important for carbon accounting. Forest AGB estimation has been conducted with a variety of data sources and prediction methods, but many uncertainties still exist. In this study, six prediction methods, including Gaussian processes, stepwise linear regression, nonlinear regression using a logistic model, partial least squares regression, random forest, and support vector machines were used to estimate forest AGB in Jiangxi Province, China, by combining Geoscience Laser Altimeter System (GLAS) data, Moderate Resolution Imaging Spectroradiometer (MODIS) data, and field measurements. We compared the effect of three factors (prediction methods, sample sizes of field measurements, and cross-validation settings) on the predictive quality of the methods. The results showed that the prediction methods had the most considerable effect on the prediction quality. In most cases, random forest produced more accurate estimates than the other methods. The sample sizes had an obvious effect on accuracy, especially for the random forest model. The accuracy increased with increasing sample sizes. The random forest algorithm with a large number of field measurements, was the most precise (coefficient of determination (R2) = 0.73, root mean square error (RMSE) = 23.58 Mg/ha). Increasing the number of folds within the cross-validation settings improved the R2 values. However, no apparent change occurred in RMSE for different numbers of folds. Finally, the wall-to-wall forest AGB map over the study area was generated using the random forest model.
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23
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Performance of Laser-Based Electronic Devices for Structural Analysis of Amazonian Terra-Firme Forests. REMOTE SENSING 2019. [DOI: 10.3390/rs11050510] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Tropical vegetation biomass represents a key component of the carbon stored in global forest ecosystems. Estimates of aboveground biomass commonly rely on measurements of tree size (diameter and height) and then indirectly relate, via allometric relationships and wood density, to biomass sampled from a relatively small number of harvested and weighed trees. Recently, however, novel in situ remote sensing techniques have been proposed, which may provide nondestructive alternative approaches to derive biomass estimates. Nonetheless, we still lack knowledge of the measurement uncertainties, as both the calibration and validation of estimates using different techniques and instruments requires consistent assessment of the underlying errors. To that end, we investigate different approaches estimating the tropical aboveground biomass in situ. We quantify the total and systematic errors among measurements obtained from terrestrial light detection and ranging (LiDAR), hypsometer-based trigonometry, and traditional forest inventory. We show that laser-based estimates of aboveground biomass are in good agreement (<10% measurement uncertainty) with traditional measurements. However, relative uncertainties vary among the allometric equations based on the vegetation parameters used for parameterization. We report the error metrics for measurements of tree diameter and tree height and discuss the consequences for estimated biomass. Despite methodological differences detected in this study, we conclude that laser-based electronic devices could complement conventional measurement techniques, thereby potentially improving estimates of tropical vegetation biomass.
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24
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Ifo SA, Binsangou S, Ibocko Ngala L, Madingou M, Cuni‐Sanchez A. Seasonally flooded, andterra firmein northern Congo: Insights on their structure, diversity and biomass. Afr J Ecol 2018. [DOI: 10.1111/aje.12555] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Suspense Averti Ifo
- Laboratoire de Géomatique et d'Ecologie Tropicale Appliquée Université Marien N'GOUABI Brazzaville Congo
| | - Stoffenne Binsangou
- Laboratoire de Géomatique et d'Ecologie Tropicale Appliquée Université Marien N'GOUABI Brazzaville Congo
| | - Lypsia Ibocko Ngala
- Laboratoire de Géomatique et d'Ecologie Tropicale Appliquée Université Marien N'GOUABI Brazzaville Congo
| | - Mady Madingou
- Laboratoire de Géomatique et d'Ecologie Tropicale Appliquée Université Marien N'GOUABI Brazzaville Congo
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