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Yin M, Wang C, Wang H, Han Q, Zhao Z, Tang C, Guo J, Zeng J. Modeling and evaluating site and provenance variation in height-diameter relationships for Betula alnoides Buch.-Ham. ex D. Don in southern China. FRONTIERS IN PLANT SCIENCE 2023; 14:1248278. [PMID: 37849846 PMCID: PMC10577385 DOI: 10.3389/fpls.2023.1248278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 09/13/2023] [Indexed: 10/19/2023]
Abstract
Tree height (H) and stem diameter at breast height (DBH) (H-D) relationship is correlated with timber yield and quality as well as stability of forest and is crucial in forest management and genetic breeding. It is influenced by not only environmental factors such as site quality and climate factors but also genetic control that is mostly neglected. A dataset of H and DBH of 25 provenances of Betula alnoides Buch.-Ham. ex D. Don at four sites was used to model the H-D relationship. The dummy variable nonliner mixed-effect equations were applied to evaluate the effects of sites and provenances on variations of the H-D relationship and to select superior provenances of B. alnoides. Weibull equation was selected as the base model for the H-D relationship. The sites affected asymptotes of the H-D curves, and the provenance effect on asymptotes of the H-D curves varied across sites. Taking above-average DBH and lower asymptote of the H-D curves as indicators, five excellent provenances were screened out at each site with a rate of 20%. Their selection gains of individual volume ranged from 1.99% to 29.81%, and their asymptote parameter (kj) and H-D ratio were 7.17%-486.05% and 3.07-4.72% lower than the relevant total means at four sites, respectively. Genetic selection based on the H-D relationship could promote selection efficiency of excellent germplasms and was beneficial for the large-sized timber production of B. alnoides.
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Affiliation(s)
- Mingyu Yin
- Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, China
| | - Chunsheng Wang
- Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, China
| | - Huan Wang
- Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, China
| | - Qiang Han
- Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, China
| | - Zhigang Zhao
- Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, China
| | - Cheng Tang
- Agricultural College, Shihezi University, Shihezi, China
| | - Junjie Guo
- Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, China
| | - Jie Zeng
- Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, China
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Zou G, Xu K, Yang Q, Niklas KJ, Wang G. Competitive performance of Pinus massoniana is related to scaling relationships at the individual plant and branch levels. AMERICAN JOURNAL OF BOTANY 2022; 109:1097-1107. [PMID: 35694727 PMCID: PMC9540003 DOI: 10.1002/ajb2.16023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 05/23/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
PREMISE Competition is an important driver of tree mortality and thus affects forest structure and dynamics. Tree architectural traits, such as height-to-diameter (H-D) and branch length-to-diameter (L-d) relationships are thought to influence species competitiveness by affecting light capture. Unfortunately, little is known about how the H vs. D and L vs. d scaling exponents are related to tree performance (defined in the context of growth vigor) in competition. METHODS Using data from field surveys of 1547 individuals and destructive sampling of 51 trees with 1086 first-order branches from a high-density Pinus massoniana forest, we explored whether the H vs. D and the L vs. d scaling exponents respectively differed numerically across tree performance and branch vertical position in crowns. RESULTS The results indicated that (1) the H vs. D scaling exponent decreased as tree performance declined; (2) the L vs. d scaling exponent differed across tree performance classes (i.e., the scaling exponent of "inferior" trees was significantly larger than that of "moderate" and "superior" trees); (3) the L vs. d scaling exponent decreased as branch position approached ground level; and (4) overall, the branch scaling exponent decreased as tree performance improved in each crown layer, but decreased significantly in the intermediate layer. CONCLUSIONS This study highlights the variation within (and linkage among) length-to-diameter scaling relationships across tree performance at the individual and branch levels. This linkage provides new insights into potential mechanisms of tree growth variation (and even further mortality) under competition in subtropical forests.
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Affiliation(s)
- Guiwu Zou
- College of Life SciencesZhejiang UniversityHangzhou310029China
| | - Kang Xu
- College of Environmental & Resource SciencesZhejiang UniversityHangzhouZhejiang310058China
| | - Qingpei Yang
- College of ForestryJiangxi Agricultural UniversityNanchang330045China
| | - Karl J. Niklas
- School of Integrative Plant Science, Plant Biology SectionCornell UniversityIthacaNY14853USA
| | - Genxuan Wang
- College of Life SciencesZhejiang UniversityHangzhou310029China
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Responses of Early Distribution and Developmental Traits of Male and Female Trees to Stand Density in Fraxinus mandshurica Rupr. Plantation. FORESTS 2022. [DOI: 10.3390/f13030472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Density plays an important role in tree growth and development. Exploring the growth of males and females in the early stage of gender differentiation and the distribution pattern in different densities are beneficial to assess the influence earlier caused by density of the productivity and reproductive potential of dioecious plantations. We observed the numbers, distribution pattern and phenotypic traits of the males and females of Fraxinus mandshurica Rupr. in four initial densities (D1: 1.5 × 3 m; D2: 2 × 2 m; D3: 1.5 × 1.5 m; D4: 1 × 1 m). The results showed that the number of males and females gradually decreased with the increase in stand density, and they were randomly distributed in each density. With the increase in density, the total volume of males and females increased first and then decreased, and the highest value appeared in the D2 (2 × 2 m) density. The phenotypic traits of males and females had no significant difference within the same density. With increasing density, the crown width and the diameter of males and females all gradually decreased. There was a larger leaf area, larger specific leaf weight, and less leaf index for males, but for females, there was a relatively stable leaf area, larger leaf biomass, and less living under branch height. In the current stage, the D2 (2 × 2 m) planting density has advantages in the number and quality of males and females. Our results emphasize that suitable stand density can promote the volume of timber accumulation and reproduction of males and females in plantations with dioecious trees.
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de Wergifosse L, André F, Goosse H, Boczon A, Cecchini S, Ciceu A, Collalti A, Cools N, D'Andrea E, De Vos B, Hamdi R, Ingerslev M, Knudsen MA, Kowalska A, Leca S, Matteucci G, Nord-Larsen T, Sanders TG, Schmitz A, Termonia P, Vanguelova E, Van Schaeybroeck B, Verstraeten A, Vesterdal L, Jonard M. Simulating tree growth response to climate change in structurally diverse oak and beech forests. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150422. [PMID: 34852431 DOI: 10.1016/j.scitotenv.2021.150422] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 08/23/2021] [Accepted: 09/14/2021] [Indexed: 06/13/2023]
Abstract
This study aimed to simulate oak and beech forest growth under various scenarios of climate change and to evaluate how the forest response depends on site properties and particularly on stand characteristics using the individual process-based model HETEROFOR. First, this model was evaluated on a wide range of site conditions. We used data from 36 long-term forest monitoring plots to initialize, calibrate, and evaluate HETEROFOR. This evaluation showed that HETEROFOR predicts individual tree radial growth and height increment reasonably well under different growing conditions when evaluated on independent sites. In our simulations under constant CO2 concentration ([CO2]cst) for the 2071-2100 period, climate change induced a moderate net primary production (NPP) gain in continental and mountainous zones and no change in the oceanic zone. The NPP changes were negatively affected by air temperature during the vegetation period and by the annual rainfall decrease. To a lower extent, they were influenced by soil extractable water reserve and stand characteristics. These NPP changes were positively affected by longer vegetation periods and negatively by drought for beech and larger autotrophic respiration costs for oak. For both species, the NPP gain was much larger with rising CO2 concentration ([CO2]var) mainly due to the CO2 fertilisation effect. Even if the species composition and structure had a limited influence on the forest response to climate change, they explained a large part of the NPP variability (44% and 34% for [CO2]cst and [CO2]var, respectively) compared to the climate change scenario (5% and 29%) and the inter-annual climate variability (20% and 16%). This gives the forester the possibility to act on the productivity of broadleaved forests and prepare them for possible adverse effects of climate change by reinforcing their resilience.
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Affiliation(s)
- Louis de Wergifosse
- Earth and Life Institute: Environmental Sciences, UCLouvain, 1, Croix du Sud, 1348 Louvain-la-Neuve, Belgium; Earth and Life Institute: Earth and Climate, UCLouvain, 3, Place Louis Pasteur, 1348 Louvain-la-Neuve, Belgium.
| | - Frédéric André
- Earth and Life Institute: Environmental Sciences, UCLouvain, 1, Croix du Sud, 1348 Louvain-la-Neuve, Belgium
| | - Hugues Goosse
- Earth and Life Institute: Earth and Climate, UCLouvain, 3, Place Louis Pasteur, 1348 Louvain-la-Neuve, Belgium
| | - Andrzej Boczon
- Forest Research Institute, Sekocin Stary, ul. Braci Lesnej 3, 05-090 Raszyn, Poland
| | - Sébastien Cecchini
- Office National des Forêts, Département Recherche-Développement-Innovation, Bâtiment B, Boulevard de Constance, 77300 Fontainebleau, France
| | - Albert Ciceu
- Forest Management Department, National Institute for Research and Development in Forestry INCDS Marin Drăcea, 128, Bulevardul Eroilor, 077190 Voluntari, Romania; Department of Forest Engineering, Forest Management Planning and Terrestrial Measurements, Faculty of Silviculture and Forest Engineering, "Transilvania" University, 1 Ludwig van Beethoven Str., 500123 Braşov, Romania
| | - Alessio Collalti
- Forest Modelling Lab., Institute for Agriculture and Forestry Systems in the Mediterranean, National Research Council of Italy (CNR-ISAFOM), Via Madonna Alta 128, 06128 Perugia, PG, Italy; Department of Innovation in Biological, Agro-food and Forest Systems (DIBAF), University of Tuscia, via San Camillo de Lellis, 01100 Viterbo, VT, Italy
| | - Nathalie Cools
- Research Institute for Nature and Forest (INBO), 4, Gaverstraat, 9500 Geraardsbergen, Belgium
| | - Ettore D'Andrea
- Institute for Agriculture and Forestry Systems in the Mediterranean, National Research Council of Italy 8 (CNR-ISAFOM), P. le Enrico Fermi 1 Loc. Porto del Granatello, 80055 Portici, NA, Italy
| | - Bruno De Vos
- Research Institute for Nature and Forest (INBO), 4, Gaverstraat, 9500 Geraardsbergen, Belgium
| | - Rafiq Hamdi
- Royal Meteorological Institute of Belgium, 3, Avenue circulaire, 1180 Brussels, Belgium
| | - Morten Ingerslev
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Rolighedsvej 23, DK-1958 Frederiksberg C, Denmark
| | - Morten Alban Knudsen
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Rolighedsvej 23, DK-1958 Frederiksberg C, Denmark
| | - Anna Kowalska
- Forest Research Institute, Sekocin Stary, ul. Braci Lesnej 3, 05-090 Raszyn, Poland
| | - Stefan Leca
- Forest Management Department, National Institute for Research and Development in Forestry INCDS Marin Drăcea, 128, Bulevardul Eroilor, 077190 Voluntari, Romania
| | - Giorgio Matteucci
- Institute for BioEconomy, National Research Council of Italy (CNR-IBE), via Madonna del Piano, 10 50019 Sesto Fiorentino, FI, Italy
| | - Thomas Nord-Larsen
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Rolighedsvej 23, DK-1958 Frederiksberg C, Denmark
| | - Tanja Gm Sanders
- Thünen Institute of Forest Ecosystems, Alfred-Moeller-Str. 1, Haus 41/42, 16225 Eberswalde, Germany
| | - Andreas Schmitz
- Department of Silviculture and Forest Ecology of the Temperate Zones, University of Göttingen, 1, Büsgenweg, 37077 Göttingen, Germany; State Agency for Nature, Environment and Consumer Protection of North Rhine-Westphalia, 10, Leibnizstraße, 45659 Recklinghausen, Germany; Department of Silviculture and Forest Ecology of the Temperate Zones, University of Göttingen, 1, Büsgenweg, 37077 Göttingen, Germany
| | - Piet Termonia
- Royal Meteorological Institute of Belgium, 3, Avenue circulaire, 1180 Brussels, Belgium; Department of Physics and Astronomy, Ghent University, 86, Proeftuinstraat, 9000 Ghent, Belgium
| | - Elena Vanguelova
- Centre of Ecosystem, Society and Biosecurity, Forest Research, Alice Holt Lodge, Farnham, Surrey GU10 4LH, UK
| | - Bert Van Schaeybroeck
- Royal Meteorological Institute of Belgium, 3, Avenue circulaire, 1180 Brussels, Belgium
| | - Arne Verstraeten
- Research Institute for Nature and Forest (INBO), 4, Gaverstraat, 9500 Geraardsbergen, Belgium
| | - Lars Vesterdal
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Rolighedsvej 23, DK-1958 Frederiksberg C, Denmark
| | - Mathieu Jonard
- Earth and Life Institute: Environmental Sciences, UCLouvain, 1, Croix du Sud, 1348 Louvain-la-Neuve, Belgium
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Holiaka D, Kato H, Yoschenko V, Onda Y, Igarashi Y, Nanba K, Diachuk P, Holiaka M, Zadorozhniuk R, Kashparov V, Chyzhevskyi I. Scots pine stands biomass assessment using 3D data from unmanned aerial vehicle imagery in the Chernobyl Exclusion Zone. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 295:113319. [PMID: 34348433 DOI: 10.1016/j.jenvman.2021.113319] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 07/09/2021] [Accepted: 07/16/2021] [Indexed: 06/13/2023]
Abstract
Thirty-five years after the accident, large forest areas in the Chernobyl Exclusion Zone still contain huge amounts of radionuclides released from the Chernobyl Nuclear Power Plant Unit 4 in April 1986. An assessment of the radiological and radioecological consequences of persistent radioactive contamination and development of remediation strategies for Chernobyl forests imply acquiring comprehensive data on their contamination levels and dynamics of biomass inventories. The most accurate forest inventory data can be obtained in ground timber cruises. However, such cruises in radioactive contaminated forest ecosystems in the Chernobyl Exclusion Zone result in radiation exposures of the personnel involved, which means the need for development of the remote sensing methods. The purpose of this study is to analyze the applicability and limitations of the photogrammetric method for the remote large-scale monitoring of aboveground biomass inventories. Based on field measurements, we estimated the biomass inventories in 31 Scots pine stands including both artificial plantations and natural populations. The stands differed significantly in age (from a few years in natural populations to 115 years in the oldest plantation), productivity (from 0.4 to 19.8 kg m-2), mean height (from 4.1 to 36 m), and other parameters. Photogrammetric data were obtained from the same stands using unmanned aerial vehicle (UAV). These data were then processed using two approaches to derive the canopy height model (CHM) parameters which were tested for correlation with the aboveground biomass inventories. In the first approach, we found that the inventories correlated well with the mean value of CHM of the site (R2 = 0.79). In the second approach, the total aboveground biomass was approximated by a function of the average height of trees detected at the site and the total crown projection area (R2 = 0.78). Among other local parameters, the total crown projection area was identified as the major factor impacting the accuracy of the aboveground biomass inventory estimates from the UAV survey data in both approaches. In the dense stands with the high total crown projections areas (more than 0.90), the average relative deviations of the UAV-based aboveground biomass estimates from the results of the field measurements were close to 0, which means the adequate accuracy of the UAV surveys data for radioecological monitoring purposes. The relative deviations of the UAV-based estimates in both approaches increased in the stands consisting of separated groups of trees, which indicates potential limitation of the approaches and need for their further development.
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Affiliation(s)
- Dmytrii Holiaka
- Ukrainian Institute of Agricultural Radiology, National University of Life and Environmental Sciences of Ukraine, Mashinobudivnykiv Str. 7, Chabany, Kyiv Region, 08162, Ukraine
| | - Hiroaki Kato
- Center for Research in Isotopes and Environmental Dynamics at University of Tsukuba, 1 Tennodai, Tsukuba, 305-8577, Japan
| | - Vasyl Yoschenko
- Institute of Environmental Radioactivity at Fukushima University, 1 Kanayagawa, Fukushima, 960-1296, Japan.
| | - Yuichi Onda
- Center for Research in Isotopes and Environmental Dynamics at University of Tsukuba, 1 Tennodai, Tsukuba, 305-8577, Japan
| | - Yasunori Igarashi
- Institute of Environmental Radioactivity at Fukushima University, 1 Kanayagawa, Fukushima, 960-1296, Japan
| | - Kenji Nanba
- Institute of Environmental Radioactivity at Fukushima University, 1 Kanayagawa, Fukushima, 960-1296, Japan
| | - Petro Diachuk
- Ukrainian Institute of Agricultural Radiology, National University of Life and Environmental Sciences of Ukraine, Mashinobudivnykiv Str. 7, Chabany, Kyiv Region, 08162, Ukraine
| | - Maryna Holiaka
- Ukrainian Institute of Agricultural Radiology, National University of Life and Environmental Sciences of Ukraine, Mashinobudivnykiv Str. 7, Chabany, Kyiv Region, 08162, Ukraine
| | - Roman Zadorozhniuk
- Ukrainian Institute of Agricultural Radiology, National University of Life and Environmental Sciences of Ukraine, Mashinobudivnykiv Str. 7, Chabany, Kyiv Region, 08162, Ukraine
| | - Valery Kashparov
- Ukrainian Institute of Agricultural Radiology, National University of Life and Environmental Sciences of Ukraine, Mashinobudivnykiv Str. 7, Chabany, Kyiv Region, 08162, Ukraine
| | - Ihor Chyzhevskyi
- State Specialized Enterprise Ecocentre, State Agency of Ukraine on Exclusion Zone Management, Shkil'na Str. 4, Chernobyl, Kyiv Region, 07270, Ukraine
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Effect of Climate Change on the Growth of Endangered Scree Forests in Krkonoše National Park (Czech Republic). FORESTS 2021. [DOI: 10.3390/f12081127] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Scree forests with large numbers of protected plants and wildlife are seriously threatened by climate change due to more frequent drought episodes, which cause challenges for very stony, shallow soils. The effect of environmental factors on the radial growth of five tree species—European beech (Fagus sylvatica L.), Norway spruce (Picea abies (L.) Karst.), sycamore maple (Acer pseudoplatanus L.), European ash (Fraxinus excelsior L.), and mountain elm (Ulmus glabra Huds.)—was studied in the mixed stands (105–157 years) in the western Krkonoše Mountains (Czech Republic) concerning climate change. These are communities of maple to fir beechwoods (association Aceri-Fagetum sylvaticae and Luzulo-Abietetum albae) on ranker soils at the altitude 590–700 m a.s.l. Production, structure, and biodiversity were evaluated in seven permanent research plots and the relationships of the radial growth (150 cores) to climatic parameters (precipitation, temperature, and extreme conditions) and air pollution (SO2, NOX, ozone exposure). The stand volume reached 557–814 m3 ha−1 with high production potential of spruce and ash. The radial growth of beech and spruce growing in relatively favorable habitat conditions (deeper soil profile and less skeletal soils) has increased by 16.6%–46.1% in the last 20 years. By contrast, for sycamore and ash growing in more extreme soil conditions, the radial growth decreased by 12.5%–14.6%. However, growth variability increased (12.7%–29.5%) for all tree species, as did the occurrence of negative pointer years (extremely low radial growth) in the last two decades. The most sensitive tree species to climate and air pollution were spruce and beech compared to the resilience of sycamore and ash. Spectral analysis recorded the largest cyclical fluctuations (especially the 12-year solar cycle) in spruce, while ash did not show any significant cycle processes. The limiting factors of growth were droughts with high temperatures in the vegetation period for spruce and late frosts for beech. According to the degree of extreme habitat conditions, individual tree species thus respond appropriately to advancing climate change, especially to an increase in the mean temperature (by 2.1 °C), unevenness in precipitation, and occurrence of extreme climate events in the last 60 years.
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Morin X, Bugmann H, Coligny F, Martin‐StPaul N, Cailleret M, Limousin J, Ourcival J, Prevosto B, Simioni G, Toigo M, Vennetier M, Catteau E, Guillemot J. Beyond forest succession: A gap model to study ecosystem functioning and tree community composition under climate change. Funct Ecol 2021. [DOI: 10.1111/1365-2435.13760] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Xavier Morin
- CEFECNRSUniv. MontpellierEPHEIRDUniv. Paul Valéry Montpellier 3 Montpellier France
| | - Harald Bugmann
- Forest Ecology Institute of Terrestrial Ecosystems ETH Zürich Zürich Switzerland
| | - François Coligny
- AMAP UMR931, Botany and Computational Plant Architecture Université de Montpellier – CIRAD – CNRS – INRAE – IRD Montpellier Cedex 5 France
| | - Nicolas Martin‐StPaul
- INRAEURFMDomaine Saint PaulINRAE Centre de recherche PACADomaine Saint‐Paul Site Agroparc France
| | - Maxime Cailleret
- INRAE Aix‐en‐ProvenceAix Marseille UniversitéUMR RECOVER Aix‐en‐Provence Cedex 5 France
| | - Jean‐Marc Limousin
- CEFECNRSUniv. MontpellierEPHEIRDUniv. Paul Valéry Montpellier 3 Montpellier France
| | - Jean‐Marc Ourcival
- CEFECNRSUniv. MontpellierEPHEIRDUniv. Paul Valéry Montpellier 3 Montpellier France
| | - Bernard Prevosto
- INRAE Aix‐en‐ProvenceAix Marseille UniversitéUMR RECOVER Aix‐en‐Provence Cedex 5 France
| | - Guillaume Simioni
- INRAEURFMDomaine Saint PaulINRAE Centre de recherche PACADomaine Saint‐Paul Site Agroparc France
| | - Maude Toigo
- CEFECNRSUniv. MontpellierEPHEIRDUniv. Paul Valéry Montpellier 3 Montpellier France
| | - Michel Vennetier
- INRAE Aix‐en‐ProvenceAix Marseille UniversitéUMR RECOVER Aix‐en‐Provence Cedex 5 France
| | | | - Joannès Guillemot
- CIRADUMR Eco&Sols Montpellier France
- Eco&SolsUniv MontpellierCIRADINRAE, MontpellierSupAgro Montpellier France
- Department of Forest Sciences ESALQUniversity of São Paulo Piracicaba Brazil
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9
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Impact of Stand Density and Tree Social Status on Aboveground Biomass Allocation of Scots Pine Pinus sylvestris L. FORESTS 2020. [DOI: 10.3390/f11070765] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Stand density changes due to aging and thinning interventions. At the same time, the social status of trees develops and varies due to different genetic conditions as well as access to nutrients and light. Trees growing in diverse conditions gain their social status in the stand, which, in the end, influences their development and biomass allocation. The objective of this research was to discover if stand density or tree social status has an impact on a tree’s aboveground biomass allocation. The study was carried out in five premature and five mature pine stands, growing in the same soil conditions. The selected sample stands had a different growing density, from low to high. In each sample stand, 10 trees were selected to represent a different social status, according to the Schädelin classification. There were 100 trees felled in total (50 in the premature stands and 50 in the mature stands), for which the dry biomass of the stem, living and dead branches, needles, and cones was determined. The results showed that stand density only had an impact on the branches’ biomass fraction but not the stem and foliage fractions, while social status had an impact on all the fractions. Dominant and codominant trees, as well as those with developed crowns, had a smaller share of the stem and higher share of branches in comparison with trees of a lower social status.
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Bert D, Lebourgeois F, Ponton S, Musch B, Ducousso A. Which oak provenances for the 22nd century in Western Europe? Dendroclimatology in common gardens. PLoS One 2020; 15:e0234583. [PMID: 32520978 PMCID: PMC7286526 DOI: 10.1371/journal.pone.0234583] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 05/28/2020] [Indexed: 01/03/2023] Open
Abstract
The current distribution area of the two sympatric oaks Quercus petraea and Q. robur covers most of temperate Western Europe. Depending on their geographic location, populations of these trees are exposed to different climate constraints, to which they are adapted. Comparing the performances of trees from contrasting populations provides the insight into their expected resilience to future climate change required for forest management. In this study, the descendants of 24 Q. petraea and two Q. robur provenances selected from sites throughout Europe were grown for 20 years in three common gardens with contrasting climates. The 2420 sampled trees allowed the assessments of the relationship between radial growth and climate. An analysis of 15-year chronologies of ring widths, with different combinations of climate variables, revealed different response patterns between provenances and between common gardens. As expected, provenances originating from sites with wet summers displayed the strongest responses to summer drought, particularly in the driest common garden. All provenances displayed positive significant relationships between the temperature of the previous winter and radial growth when grown in the common garden experiencing the mildest winter temperatures. Only eastern provenances from continental cold climates also clearly expressed this limitation of growth by cold winter temperatures in the other two common gardens. However, ecological distance, calculated on the basis of differences in climate between the site of origin and the common garden, was not clearly related to the radial growth responses of the provenances. This suggests that the gradient of genetic variability among the selected provenances was not strictly structured according to climate gradients. Based on these results, we provide guidelines for forest managers for the assisted migration of Quercus petraea and Q. robur provenances.
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Affiliation(s)
- Didier Bert
- INRAE, Univ. Bordeaux, BIOGECO, Cestas, France
| | | | - Stéphane Ponton
- Université de Lorraine, AgroParisTech, INRAE, UMR Silva, Nancy, France
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Alam SA, Huang JG, Stadt KJ, Comeau PG, Dawson A, Gea-Izquierdo G, Aakala T, Hölttä T, Vesala T, Mäkelä A, Berninger F. Effects of Competition, Drought Stress and Photosynthetic Productivity on the Radial Growth of White Spruce in Western Canada. FRONTIERS IN PLANT SCIENCE 2017; 8:1915. [PMID: 29163627 PMCID: PMC5681961 DOI: 10.3389/fpls.2017.01915] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 10/23/2017] [Indexed: 05/05/2023]
Abstract
Understanding the complex interactions of competition, climate warming-induced drought stress, and photosynthetic productivity on the radial growth of trees is central to linking climate change impacts on tree growth, stand structure and in general, forest productivity. Using a mixed modeling approach, a stand-level photosynthetic production model, climate, stand competition and tree-ring data from mixedwood stands in western Canada, we investigated the radial growth response of white spruce [Picea glauca (Moench.) Voss] to simulated annual photosynthetic production, simulated drought stress, and tree and stand level competition. The long-term (~80-year) radial growth of white spruce was constrained mostly by competition, as measured by total basal area, with minor effects from drought. There was no relation of competition and drought on tree growth but dominant trees increased their growth more strongly to increases in modeled photosynthetic productivity, indicating asymmetric competition. Our results indicate a co-limitation of drought and climatic factors inhibiting photosynthetic productivity for radial growth of white spruce in western Canada. These results illustrate how a modeling approach can separate the complex factors regulating both multi-decadal average radial growth and interannual radial growth variations of white spruce, and contribute to advance our understanding on sustainable management of mixedwood boreal forests in western Canada.
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Affiliation(s)
- Syed A. Alam
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- Department of Physics, University of Helsinki, Helsinki, Finland
- Department of Forest Sciences, University of Helsinki, Helsinki, Finland
| | - Jian-Guo Huang
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
- *Correspondence: Jian-Guo Huang
| | - Kenneth J. Stadt
- Forest Management Branch, Alberta Agriculture and Forestry, Edmonton, AB, Canada
| | - Philip G. Comeau
- Department of Renewable Resources, University of Alberta, Edmonton, AB, Canada
| | - Andria Dawson
- Department of General Education, Mount Royal University, Calgary, AB, Canada
| | | | - Tuomas Aakala
- Department of Forest Sciences, University of Helsinki, Helsinki, Finland
| | - Teemu Hölttä
- Department of Forest Sciences, University of Helsinki, Helsinki, Finland
| | - Timo Vesala
- Department of Physics, University of Helsinki, Helsinki, Finland
- Department of Forest Sciences, University of Helsinki, Helsinki, Finland
| | - Annikki Mäkelä
- Department of Forest Sciences, University of Helsinki, Helsinki, Finland
| | - Frank Berninger
- Department of Forest Sciences, University of Helsinki, Helsinki, Finland
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Ammer C. Unraveling the Importance of Inter- and Intraspecific Competition for the Adaptation of Forests to Climate Change. PROGRESS IN BOTANY 2016. [DOI: 10.1007/124_2016_14] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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13
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Sumida A. The diameter growth-height growth relationship as related to the diameter-height relationship. TREE PHYSIOLOGY 2015; 35:1031-1034. [PMID: 26433018 DOI: 10.1093/treephys/tpv100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 08/22/2015] [Indexed: 06/05/2023]
Affiliation(s)
- Akihiro Sumida
- Institute of Low Temperature Science, Hokkaido University, N19W8, Sapporo 060-0819, Japan
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