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Popa A, Popa I, Badea O, Bosela M. Non-linear response of Norway spruce to climate variation along elevational and age gradients in the Carpathians. Environ Res 2024:119073. [PMID: 38710428 DOI: 10.1016/j.envres.2024.119073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/25/2024] [Accepted: 05/03/2024] [Indexed: 05/08/2024]
Abstract
Climate change, namely increased warming coupled with a rise in extreme events (e.g., droughts, storms, heatwaves), is negatively affecting forest ecosystems worldwide. In these ecosystems, growth dynamics and biomass accumulation are driven mainly by environmental constraints, inter-tree competition, and disturbance regimes. Usually, climate-growth relationships are assessed by linear correlation due to the simplicity and straightforwardness of modeling. However, applying this method may bias results, since the ecological and physiological responses of trees to environmental factors are non-linear, and usually bell-shaped. In the Eastern Carpathian, Norway spruce is at the southeasternmost edge of its natural occurrence; this region is thus potentially vulnerable to climate change. A non-linear assessment of climate-growth relationships using machine-learning techniques for Norway spruce in this area had not been conducted prior to this study. To address this knowledge gap, we analyzed a large tree-ring network from 158 stands, with over 3,000 trees of varying age distributed along an elevational gradient. Our results showed that non-linearity in the growth-climate response of spruce was season-specific: temperatures from the previous autumn and current growing season, along with water availability during winter, induced a bell-shaped response. Moreover, we found that at low elevations, spruce growth was mainly limited by water availability in the growing season, while winter temperatures are likely to have had a slight influence along the entire elevational gradient. Furthermore, at elevations lower than 1400 m, spruce trees were also found to be sensitive to previous autumn water availability. Overall, our results shed new light on the response of Norway spruce to climate in the Carpathians, which may aid in management decisions.
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Affiliation(s)
- Andrei Popa
- National Institute for Research and Development in Forestry 'Marin Dracea', Bucharest, Romania; Faculty of Silviculture and Forest Engineering, Transilvania University of Brasov, Brasov, Romania
| | - Ionel Popa
- National Institute for Research and Development in Forestry 'Marin Dracea', Bucharest, Romania; Center for Mountain Economy (CE-MONT), Vatra Dornei, Romania.
| | - Ovidiu Badea
- National Institute for Research and Development in Forestry 'Marin Dracea', Bucharest, Romania; Faculty of Silviculture and Forest Engineering, Transilvania University of Brasov, Brasov, Romania
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2
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Mapitov NB, Belokopytova LV, Zhirnova DF, Abilova SB, Ualiyeva RM, Bitkeyeva AA, Babushkina EA, Vaganov EA. Factors Limiting Radial Growth of Conifers on Their Semiarid Borders across Kazakhstan. Biology (Basel) 2023; 12:biology12040604. [PMID: 37106804 PMCID: PMC10135724 DOI: 10.3390/biology12040604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/13/2023] [Accepted: 04/14/2023] [Indexed: 04/29/2023]
Abstract
The forests of Central Asia are biodiversity hotspots at risk from rapid climate change, but they are understudied in terms of the climate-growth relationships of trees. This classical dendroclimatic case study was performed for six conifer forest stands near their semiarid boundaries across Kazakhstan: (1-3) Pinus sylvestris L., temperate forest steppes; (4-5) Picea schrenkiana Fisch. & C.A. Mey, foothills, the Western Tien Shan, southeast; (6) Juniperus seravschanica Kom., montane zone, the Western Tien Shan, southern subtropics. Due to large distances, correlations between local tree-ring width (TRW) chronologies are significant only within species (pine, 0.19-0.50; spruce, 0.55). The most stable climatic response is negative correlations of TRW with maximum temperatures of the previous (from -0.37 to -0.50) and current (from -0.17 to -0.44) growing season. The strength of the positive response to annual precipitation (0.10-0.48) and Standardized Precipitation Evapotranspiration Index (0.15-0.49) depends on local aridity. The timeframe of climatic responses shifts to earlier months north-to-south. For years with maximum and minimum TRW, differences in seasonal maximal temperatures (by ~1-3 °C) and precipitation (by ~12-83%) were also found. Heat stress being the primary factor limiting conifer growth across Kazakhstan, we suggest experiments there on heat protection measures in plantations and for urban trees, alongside broadening the coverage of the dendroclimatic net with accents on the impact of habitat conditions and climate-induced long-term growth dynamics.
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Affiliation(s)
- Nariman B Mapitov
- Department of Biology and Ecology, Toraighyrov University, Pavlodar 140008, Kazakhstan
| | | | - Dina F Zhirnova
- Khakass Technical Institute, Siberian Federal University, 655017 Abakan, Russia
| | - Sholpan B Abilova
- Department of Microbiology and Biotechnology, S. Seifullin Kazakh Agrotechnical University, Astana 010011, Kazakhstan
| | - Rimma M Ualiyeva
- Department of Biology and Ecology, Toraighyrov University, Pavlodar 140008, Kazakhstan
| | - Aliya A Bitkeyeva
- Department of Biology and Ecology, Toraighyrov University, Pavlodar 140008, Kazakhstan
| | - Elena A Babushkina
- Khakass Technical Institute, Siberian Federal University, 655017 Abakan, Russia
| | - Eugene A Vaganov
- Institute of Ecology and Geography, Siberian Federal University, 660036 Krasnoyarsk, Russia
- Department of Dendroecology, V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, 660036 Krasnoyarsk, Russia
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Fan B, Yang B, Li G. Assessing the influence of local environment, regional climate and tree species on radial growth in the Hexi area of arid northwest China. Front Plant Sci 2022; 13:1046462. [PMID: 36618615 PMCID: PMC9815462 DOI: 10.3389/fpls.2022.1046462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 12/01/2022] [Indexed: 06/17/2023]
Abstract
Radial growth is influenced by the local environment, regional climate, and tree species. Assessing the influence of these variables on radial growth can help to reveal the relationships between tree growth and the environment. Here, we used standard dendrochronological approach to explore the response of radial growth to climate factors. We reported ring-width (TRW) residual chronologies from five sites along a longitudinal gradient in the Hexi area, arid northwestern China, based on a total of 249 Qinghai spruce (Picea crassifolia) ring-width records. We found that Qinghai spruce in the west of the Hexi area is more sensitive to climate change than in the east, and that drought condition in the previous growing season and the early growing season (March to June) limits spruce growth. Comparison between the regional standard chronologies of Qinghai spruce and Qilian juniper (Juniperus przewalskii) in the Hexi area during 1813-2001 showed that both chronologies were more consistent in the high-frequency domain than in the low-frequency domain. The findings emphasize the impacts of local environment, regional climate and tree species on radial growth, suggesting that accounting for these variables could improve large-scale and multi-species dendrochronological studies.
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Affiliation(s)
- Beixi Fan
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Bao Yang
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China
- School of Geography and Ocean Science, Nanjing University, Nanjing, China
| | - Gang Li
- Management and Protection Centre of Gansu Qilianshan National Nature Reserve, Zhangye, China
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Popa A, Popa I, Roibu CC, Badea ON. Do Different Tree-Ring Proxies Contain Different Temperature Signals? A Case Study of Norway Spruce ( Picea abies (L.) Karst) in the Eastern Carpathians. Plants (Basel) 2022; 11:2428. [PMID: 36145829 PMCID: PMC9503057 DOI: 10.3390/plants11182428] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/09/2022] [Accepted: 09/13/2022] [Indexed: 06/16/2023]
Abstract
One of the most important proxy archives for past climate variation is tree rings. Tree-ring parameters offer valuable knowledge regarding how trees respond and adapt to environmental changes. Trees encode all environmental changes in different tree-ring parameters. In this study, we analyzed how air temperature is encoded in different Norway spruce tree-ring proxies along an altitude gradient in an intramountain valley of the Carpathians. The study area, in the Gheorgheni region, Romania (Eastern Carpathians), has a mountain climate with a frequent temperature inversion in winter. The climate−growth relationship was analyzed for two contrasting altitudes: low elevation, i.e., below 1000 m a.s.l., and high elevation, i.e., above 1500 m a.s.l. Two local weather stations, one in the valley and the other on the upper part of the mountains, provide daily temperatures (Joseni—750 m a.s.l. and Bucin—1282 m a.s.l.). The bootstrap Pearson correlation between cumulative daily temperature data and three tree-ring proxies (tree-ring width—TRW, basal area increment—BAI, and blue intensity—BI) was computed for each series. The results show that elevation modulates the climate response pattern in the case of BI, and remains relatively similar for TRW and BAI. The winter temperature’s positive influence on spruce growth was observed in both TRW and BAI chronologies. Additionally, the BAI chronology highlights a positive relationship with summer temperature. The highest correlation coefficient (r = 0.551, p < 0.05, n = 41) was recorded between BI residual chronology from high elevation series and summer/autumn temperature from the upper-part weather station for a cumulative period of 59 days (the second half of August to the beginning of October). Our results show that, for this intramountain valley of the Eastern Carpathians, different tree-ring proxies capture different climate signals.
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Affiliation(s)
- Andrei Popa
- National Institute for Research and Development in Forestry ‘Marin Drăcea’, 007190 Bucharest, Romania
- Faculty of Silviculture and Forest Engineering, Transilvania University of Brașov, 500036 Brașov, Romania
| | - Ionel Popa
- National Institute for Research and Development in Forestry ‘Marin Drăcea’, 007190 Bucharest, Romania
- Center for Mountain Economy (CE–MONT), 725700 Vatra Dornei, Romania
| | - Cătălin-Constantin Roibu
- Forest Biometrics Laboratory, Faculty of Forestry, ‘Stefan cel Mare’ University of Suceava, 720229 Suceava, Romania
| | - Ovidiu Nicolae Badea
- National Institute for Research and Development in Forestry ‘Marin Drăcea’, 007190 Bucharest, Romania
- Faculty of Silviculture and Forest Engineering, Transilvania University of Brașov, 500036 Brașov, Romania
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Wu F, Jiang Y, Zhao S, Wen Y, Li W, Kang M. Applying space-for-time substitution to infer the growth response to climate may lead to overestimation of tree maladaptation: Evidence from the North American White Spruce Network. Glob Chang Biol 2022; 28:5172-5184. [PMID: 35714046 DOI: 10.1111/gcb.16304] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 05/21/2022] [Accepted: 06/02/2022] [Indexed: 06/15/2023]
Abstract
Under climate change circumstances, increasing studies have reported the temporal instability of tree growth responses to climate, which poses a major challenge to linearly extrapolating past climate and future growth dynamics using tree-ring data. Space-for-time substitution (SFTS) is a potential solution to this problem that is widely used in the dendrochronology field to project past or future temporal growth response trajectories from contemporary spatial patterns. However, the projected accuracy of the SFTS in the climate effects on tree growth remains uncertain. Here, we empirically test the SFTS method by comparing the effect of spatial and temporal climate variations on climate responses of white spruce (Picea glauca), which has a transcontinental range in North America. We first applied a response surface regression model to capture the variations in growth responses along the spatial climate gradients. The results showed that the relationships between growth and June temperature varied along spatial climate gradients in a predictable way. And their relationships varied mainly along with local temperate condition. Then, the projected correlation coefficients between growth and climate using SFTS were compared against the observed. We found that the growth response changes caused by spatial versus temporal climate variations showed opposite trends. Moreover, the projected correlation coefficients using the SFTS were significantly lower than the observed. This finding suggests that applying the SFTS to project the growth response of white spruce might lead to an overestimation of the degree of tree maladaptation in future climate scenarios. And the overestimation is likely to get weaker from Alaska and Yukon Territory in the west to Quebec in the east. Although this is only a case study of the SFTS method for projecting tree growth response, our findings suggest that direct application of the SFTS method may not be applicable to all regions and all tree species.
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Affiliation(s)
- Fang Wu
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Zhuhai, China
- Beijing Key Laboratory of Traditional Chinese Medicine Protection and Utilization, Faculty of Geographical Science, Beijing Normal University, Beijing, China
| | - Yuan Jiang
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Zhuhai, China
- Beijing Key Laboratory of Traditional Chinese Medicine Protection and Utilization, Faculty of Geographical Science, Beijing Normal University, Beijing, China
| | - Shoudong Zhao
- State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, China
| | - Yan Wen
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Zhuhai, China
- Beijing Key Laboratory of Traditional Chinese Medicine Protection and Utilization, Faculty of Geographical Science, Beijing Normal University, Beijing, China
| | - Wenqing Li
- Ministry of Natural Resources of the People's Republic of China, Key Laboratory of Land Consolidation and Rehabilitation, Land Consolidation and Rehabilitation Center, Beijing, China
| | - Muyi Kang
- Beijing Key Laboratory of Traditional Chinese Medicine Protection and Utilization, Faculty of Geographical Science, Beijing Normal University, Beijing, China
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Tao W, Mao K, He J, Smith NG, Qiao Y, Guo J, Yang H, Wang W, Liu J, Chen L. Daytime warming triggers tree growth decline in the Northern Hemisphere. Glob Chang Biol 2022; 28:4832-4844. [PMID: 35561010 DOI: 10.1111/gcb.16238] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 04/23/2022] [Indexed: 06/15/2023]
Abstract
Global warming has been linked to declines in tree growth. However, it is unclear how the asymmetry in daytime and nighttime warming influences this response. Here, we use 2947 residual tree-ring width chronologies covering 32 species at 2493 sites, between 1901 and 2018, across the Northern Hemisphere, to analyze the effects of daytime and nighttime temperatures, precipitation, and drought stress on the radial growth of trees. We show that drought stress was primarily triggered by daytime rather than nighttime warming. The radial growth of trees was more sensitive to drought stress in warm regions than in cold regions, especially for angiosperms. Our study provides robust evidence that daytime warming is the primary driver of the observed declines in forest productivity related to drought stress and that daytime and nighttime warming should be considered separately when modelling forest-climate interactions and feedbacks in a future, warmer world.
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Affiliation(s)
- Wenjing Tao
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Kangshan Mao
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Jiang He
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Nicholas G Smith
- Department of Biological Sciences, Texas Tech University, Lubbock, USA
| | - Yuxin Qiao
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Jing Guo
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Hongjun Yang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Wenzhi Wang
- The Key Laboratory of Mountain Environment Evolution and Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China
| | - Jianquan Liu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Lei Chen
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
- Department of Biological Sciences, Texas Tech University, Lubbock, USA
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Peng M, Li X, Peng J, Cui J, Li J, Wei Y, Wei X, Li J. Early Summer Temperature Variation Recorded by Earlywood Width in the Northern Boundary of Pinus taiwanensis Hayata in Central China and Its Linkages to the Indian and Pacific Oceans. Biology (Basel) 2022; 11:biology11071077. [PMID: 36101456 PMCID: PMC9312438 DOI: 10.3390/biology11071077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 07/14/2022] [Accepted: 07/14/2022] [Indexed: 11/16/2022]
Abstract
The Tongbai Mountains are an ecologically sensitive region to climate change, where there lies a climatic transitional zone from a subtropical to a warm−temperate monsoon climate. The northern boundary of Pinus taiwanensis Hayata is here; thus, climate information is well recorded in its tree rings. Based on developed earlywood width (EWW), latewood width (LWW) and total ring width (RW) chronologies (time period: 1887−2014 year) of Pinus taiwanensis Hayata in the Tongbai Mountains in central China, this paper analyzed characteristics of these chronologies and correlations between these chronologies and climate factors. The correlation results showed that earlywood width chronology contains more climate information than latewood width chronology and total ring width chronology, and mean temperature and mean maximum temperature in May−June were the main limiting factors for radial growth of Pinus taiwanensis Hayata. The highest significant value in all correlation analyses is −0.669 (p < 0.05) between earlywood width chronology and May−June mean temperature (TMJ) in the pre-mutation period (1958−2005) based on mutating in 2006. Thus, this paper reconstructed May−June mean temperature using earlywood width chronology from 1901 to 2005 (reliable period of earlywood width chronology is 1901−2014). The reconstructed May−June mean temperature experienced eight warmer periods and eight colder periods and also showed 2−3a cycle change over the past 105 years. The spatial correlation showed that the reconstructed series was representative of the May−June mean temperature variation in central and eastern China and significant positive/negative correlation with the sea surface temperature (SST) of the subtropical Pacific Ocean and the tropical Western Pacific Ocean and Indian Ocean from the previous October to the current June. This also indicated that May−June mean temperature periodic fluctuations might be related to the quasi-biennial oscillation (QBO) in the tropical Western Pacific Ocean and Indian Ocean. The results of this study have extended and supplemented the meteorological records of the Tongbai Mountains and have a guiding significance for forest tending and management in this area.
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Affiliation(s)
- Meng Peng
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, China; (M.P.); (X.L.); (J.C.); (J.L.); (X.W.); (J.L.)
| | - Xuan Li
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, China; (M.P.); (X.L.); (J.C.); (J.L.); (X.W.); (J.L.)
| | - Jianfeng Peng
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, China; (M.P.); (X.L.); (J.C.); (J.L.); (X.W.); (J.L.)
- The Key Laboratory of Earth System Observation and Simulation of Henan Province, Kaifeng 475004, China
- National Demonstration Center for Environment and Planning, Henan University, Kaifeng 475004, China
- Correspondence: (J.P.); (Y.W.)
| | - Jiayue Cui
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, China; (M.P.); (X.L.); (J.C.); (J.L.); (X.W.); (J.L.)
| | - Jingru Li
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, China; (M.P.); (X.L.); (J.C.); (J.L.); (X.W.); (J.L.)
| | - Yafei Wei
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, China; (M.P.); (X.L.); (J.C.); (J.L.); (X.W.); (J.L.)
- The Key Laboratory of Earth System Observation and Simulation of Henan Province, Kaifeng 475004, China
- Correspondence: (J.P.); (Y.W.)
| | - Xiaoxu Wei
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, China; (M.P.); (X.L.); (J.C.); (J.L.); (X.W.); (J.L.)
| | - Jinkuan Li
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, China; (M.P.); (X.L.); (J.C.); (J.L.); (X.W.); (J.L.)
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Jia H, Fang O, Lyu L. Non-linear modelling reveals a predominant moisture limit on juniper growth across the southern Tibetan Plateau. Ann Bot 2022; 130:85-95. [PMID: 35608820 PMCID: PMC9295923 DOI: 10.1093/aob/mcac065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 05/20/2022] [Indexed: 05/26/2023]
Abstract
BACKGROUND AND AIMS Tree growth in plateau forests is critically limited by harsh climatic conditions. Many mathematical statistical methods have been used to identify the relationships between tree growth and climatic factors, but there is still uncertainty regarding the relative importance of these factors across different regions. We tested major climatic limits at 30 sites to provide insights into the main climatic limits for juniper trees (Juniperus tibetica Kom.) across the southern Tibetan Plateau. METHODS We analysed the linear and non-linear relationships between tree growth and climatic factors using Pearson correlation statistics and a process-based forward Vaganov-Shashkin-Lite (VS-Lite) model, respectively. These relationships were used to identify the strength of the influence of different climatic factors throughout the species' growing season and to identify the main climatic factors limiting tree growth. KEY RESULTS Growth of juniper trees began in April and ended in October in the study area. The radial growth of juniper trees was limited by soil moisture throughout the summer (June-August) of the current year at 24 sampling sites and was limited by temperature at the other six sites on the southern Tibetan Plateau. CONCLUSIONS Soil moisture limited juniper growth at the majority of sites. Temperature in the current summer limited the growth of juniper trees at a few sampling sites in the western part of the study area. Local climate conditions may contribute to different limiting factors in the growth response of trees on the southern Tibetan Plateau. These findings may contribute to our understanding of divergent forest dynamics and to sustainable forest management under future climate scenarios.
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Affiliation(s)
- Hengfeng Jia
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | | | - Lixin Lyu
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
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9
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Zhao XE, Yue WP, Gao ZH, Chen F. [Changes of wet and dry climate in the past 205 years indicated by Pseudotsuga forrestii of river valley from southeastern Tibetan Plateau, China]. Ying Yong Sheng Tai Xue Bao 2021; 32:3643-3652. [PMID: 34676726 DOI: 10.13287/j.1001-9332.202110.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
The residual chronology of tree-ring width was constructed using Pseudotsuga forrestii collected from the low-altitude valley in the Chayu County, southeastern Tibetan Plateau of China. Pearson correlation analysis was carried out between the residual chronology of tree-ring width and climatic factors. The changes of Palmer drought severity index (PDSI) from April to May between 1812 and 2016 in the southeastern Tibetan Plateau were reconstructed by linear regression method (the variance interpretation was 47%). There was a significantly positive correlation between the PDSI index and tree-ring width index (r=0.69, P<0.01). The PDSI reconstructed sequence had four wet periods (1831-1844, 1853-1863, 1938-1948 and 1988-2002) and three dry periods (1864-1876, 1908-1926 and 2003-2016). Compared with other reconstructed sequences and historical records, our reconstructed sequence could better express dry and wet changes in the study area. The spatial analysis showed that the reconstructed sequence was consistent with the variation trend of PDSI index in southeastern Tibetan Plateau, with a strong spatial representation. Multiple tapers spectral analysis demonstrated that the PDSI reconstructed sequence had remarkable 19-20, 3.9, 3.2, 2.4 and 2.1 years quasi-periodic changes for the past 205 years, probably related to Asian summer monsoon and ENSO activities.
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Affiliation(s)
- Xiao-En Zhao
- Yunnan Key Laboratory of International Rivers and Transboun-dary Eco-Security, Institute of International Rivers and Eco-Security, Yunnan University, Kunming 650504, China
| | - Wei-Peng Yue
- Yunnan Key Laboratory of International Rivers and Transboun-dary Eco-Security, Institute of International Rivers and Eco-Security, Yunnan University, Kunming 650504, China
| | - Zhi-Hong Gao
- Yunnan Key Laboratory of International Rivers and Transboun-dary Eco-Security, Institute of International Rivers and Eco-Security, Yunnan University, Kunming 650504, China
| | - Feng Chen
- Yunnan Key Laboratory of International Rivers and Transboun-dary Eco-Security, Institute of International Rivers and Eco-Security, Yunnan University, Kunming 650504, China.,Key Laboratory of Tree-ring Physical and Chemical Research of the Chinese Meteoro-logical Administration/Xinjiang Laboratory of Tree-ring Ecology, Institute of Desert Meteorology, Chinese Meteorological Administration, Urumqi 830002, China
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Zhang Q, Liu Y, Li Q, Sun CF, Li T, Li P, Ye YD. [Reconstruction of summer NDVI over the past 339 years based on the tree-ring width of Picea schrenkiana in Bayinbuluke, Central Tianshan, China]. Ying Yong Sheng Tai Xue Bao 2021; 32:3671-3679. [PMID: 34676729 DOI: 10.13287/j.1001-9332.202110.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
The normalized difference vegetation index (NDVI) is widely used in various fields of vegetation research. Due to the short observation time, however, it is difficult to meet the research needs at long time scale. Here, we established a tree-ring width chronology (STD) based on Picea schrenkiana in Bayinbuluke, and calculated the correlation coefficient of chronology and NDVI with meteorological data. The results showed that both tree-ring width index and NDVI were significantly correlated with meteorological data. Combined with the significant positive correlation between width chronology and NDVI in June-August (r=0.7, P<0.01, n=38), summer NDVI (from June to August) was reconstructed over the past 339 years using a regression model. During 1680-2018, the reconstruction series had four dense vegetation periods (1738-1765, 1786-1798, 1964-1973 and 2000-2018) and five sparse vegetation periods (1690-1714, 1825-1834, 1850-1880, 1895-1920 and 1945-1955). The reconstruction reflected the hydrological signals in the central Tianshan Mountains. The comparison with the surrounding reconstructions revealed that when the runoff of Kaidu River increased and the local environment was humid, the vegetation coverage was high; otherwise the vegetation coverage was low. The extreme value of the reconstruction series also captured a series of natural disasters recorded in historical documents. Results of HYSPLT (Hybrid Single-Particle Lagrangian Integrated Trajectory Model) backward trajectory model and wind field analysis showed that NDVI anomalies were affected by the precipitation from Westerlies.
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Affiliation(s)
- Quan Zhang
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.,College of Earth and Planetary Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Yu Liu
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.,Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, Xi'an 710061, China.,China-Pakistan Joint Research Center on Earth Sciences, Islamabad 45320, Pakistan.,School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710054, China
| | - Qiang Li
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.,Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, Xi'an 710061, China.,China-Pakistan Joint Research Center on Earth Sciences, Islamabad 45320, Pakistan
| | - Chang-Feng Sun
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.,Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, Xi'an 710061, China
| | - Teng Li
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.,College of Earth and Planetary Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Pei Li
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.,College of Earth and Planetary Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Yuan-da Ye
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.,College of Earth and Planetary Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China
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11
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Cui JY, Peng JF, Li JR, Li X, Peng M, Yang L. [Responses of tree-ring width of Pinus tabuliformis plantation to climatic factors in Songshan Mountains, central China]. Ying Yong Sheng Tai Xue Bao 2021; 32:3497-3504. [PMID: 34676710 DOI: 10.13287/j.1001-9332.202110.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Taking Pinus tabuliformis plantations at different slopes in Songshan Mountains, Henan Province, China as subjects, we established different residual chronologies of P. tabuliformis in Paomaling (PML) and Junjifeng (JJF) and whole region (RC). The results showed that the chro-nological quality of PML was higher than that of JJF. Chronologies of PML and JJF had more climate information, which had significant positive relationship with mean temperature in current February, mean temperature and mean maximum temperature at the end of growing season (September-October), and significant negative relationship with mean maximum temperature in current May. The response of radial growth of P. tabuliformis to climate differed in PML and JJF. Radial growth of P. tabuliformis in PML was positively correlated with mean minimum temperature in March and precipitation in September, while that in JJF was positively correlated with precipitation in May and mean minimum temperature in September. Residual chronologies of P. tabuliformis in whole region contained more climate information. The multiple regression analysis method was used to simulate that the main limiting factors of tree-ring width growth of P. tabuliformis, which was a range of temperature indicators, especially current mean temperature in September. The result was consistent with that of correlation analysis. This study could provide basic services for forest protection and ecological construction in Songshan Mountains region.
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Affiliation(s)
- Jia-Yue Cui
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, Henan, China
| | - Jian-Feng Peng
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, Henan, China.,National Demonstration Center for Environmental and Planning, Henan University, Kaifeng 475004, Henan, China.,Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Ministry of Education, Kaifeng 475004, Henan, China
| | - Jing-Ru Li
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, Henan, China
| | - Xuan Li
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, Henan, China
| | - Meng Peng
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, Henan, China
| | - Liu Yang
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, Henan, China
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12
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Zhang JM, Fan ZX, Fu PL, Shankar P, Tang H. [Radial growth responses of four coniferous species to climate change in the Potatso National Park, China]. Ying Yong Sheng Tai Xue Bao 2021; 32:3548-3556. [PMID: 34676716 DOI: 10.13287/j.1001-9332.202110.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Using the principles and methods of dendrochronology, we measured tree-ring width of four dominant coniferous species, i.e., Larix potaninii var. macrocarpa, Picea brachytyla, Pinus densata, and Abies georgei, in the Potatso National Park, and established the tree-ring width resi-dual chronologies. We analyzed the correlation of tree-ring width residual chronologies with daily and monthly climate data from the Shangrila meteorological station to analyze the response of radial growth to climate factors. The results showed that L. potaninii var. macrocarpa had the highest annual growth rate, and A. georgei had the lowest. Radial growth showed species-specific responses to climate changes, with the highest sensitivity of L. potaninii var. macrocarpa and the lowest sensitivity of P. brachytyla. Ring-width chronology of A. georgei correlated positively with mean temperature during previous winter (November and December) and current summer (July). Ring-width chronology of L. potaninii var. macrocarpa correlated positively with temperature during the early-growing season (June), but negatively with precipitation and relative humidity. Ring-width chronology of P. densata correlated positively with precipitation and humidity but negatively with maximum temperature during the early-growing season (May), indicating that its radial growth was primarily influenced by water availability during the early-growing season.
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Affiliation(s)
- Ju-Mei Zhang
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla 666303, Yunnan, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
| | - Ze-Xin Fan
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla 666303, Yunnan, China
| | - Pei-Li Fu
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla 666303, Yunnan, China
| | - Panthi Shankar
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla 666303, Yunnan, China
| | - Hua Tang
- Potatso National Park Authority in Shangrila, Shangrila 674400, Yunnan, China
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13
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Gu H, Wang J, Lei C, Ma L. Comparison of dendroclimatic relationships using multiple tree-ring indicators ( tree-ring width and δ 13C) from Masson pine. R Soc Open Sci 2021; 8:201259. [PMID: 34295508 PMCID: PMC8261214 DOI: 10.1098/rsos.201259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 06/02/2021] [Indexed: 06/13/2023]
Abstract
This study addressed the effects of climate drivers on the tree-ring width (TRW) parameters (total ring width (TR), earlywood width (EW) and latewood width (LW)) and the total ring δ 13C series of different wood components (whole wood, α-cellulose and holocelluose) from Masson pine in subtropical China. Pairwise correlation coefficients between three ring width parameters were statistically significant. EW and LW did not reveal much stronger climate sensitivity rather than TR. This indicated that the use of intra-annual ring width has little benefit in extracting more climate information. The mean δ 13C series of the three components of the total ring had the strongest climate response to the July-September relative humidity (r = -0.792 (whole wood), -0.758 (holocellulose) and -0.769 (α-cellulose)). There are no significant differences in the dendroclimatic relationships of the δ 13C series of different wood components. Through both stationary temporal and spatial-statistical perspectives, the moisture drivers (summer/autumn) had a significant impact on three ring width parameters and three components of Masson pine. Overall, the radial growth and the δ 13C series showed different responses to the same climate drivers during the same period. Moreover, the R-squared values of the strongest climate-proxy correlation coefficients were smaller than 50% for TRW. Consequently, the δ 13C series of Masson pine may be a more representative climate proxy than TRW parameters for dendroclimatology in subtropical China.
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Affiliation(s)
- Hongliang Gu
- School of Geography, Nanjing Normal University, Nanjing 210023, People's Republic of China
- School of resources and environment, Anqing Normal University, Anqing 246011, People's Republic of China
| | - Jian Wang
- School of Geography, Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Chao Lei
- School of Geography, Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Lijuan Ma
- School of Geography, Nanjing Normal University, Nanjing 210023, People's Republic of China
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14
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Yu J, Chen JJ, Meng SW, Zhou H, Zhou G, Gao LS, Wang YP, Liu QJ. [Response of radial growth of Pinus sylvestriformis and Picea jezoensis to climate warming in the ecotone of Changbai Mountain, Northeast China]. Ying Yong Sheng Tai Xue Bao 2021; 32:46-56. [PMID: 33477212 DOI: 10.13287/j.1001-9332.202101.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Changbai Mountain is a typical distribution area of temperate coniferous and broad-leaved mixed forests, with significant influence of global climate change. In order to understand the responses of forest ecosystem to climate change, we examined the responses of dominant arbor species in the community ecotone of broad-leaved Korean pine forest and spruce-fir forest (also known as dark coniferous forest), Pinus sylvestriformis and Picea jezoensis. The standard chronologies were established by obtaining tree ring width data in order to identity the key climatic factors that confine the radial growth of both species. The responses of P. sylvestriformis and P. jezoensis to climate factors were different.P. sylvestriformis was more sensitive than P. jezoensis, indicating that P. sylvestriformis was more suitable for dendroclimatological analysis. The radial growth of P. sylvestriformis was consistent with the increases of mean temperature, while the radial growth of P. jezoensis showed a "divergence problem" which decreased with the increases of mean temperature. The radial growth of P. sylvestriformis was mainly limited by temperature, especially the mean temperature in last July and August and current September. However, there was a negative correlation between standard chronologies of P. jezoensis and mean temperature in most months, which was limited by both temperature and precipitation. The correlation between radial growth of both species and climate factors after sudden temperature rise, was weaker than that before sudden temperature rise. The correlation between radial growth and climate factors changed from positive to negative in some months. Current temperature rise might not exceed the critical threshold of the radial growth of P. sylvestriformis, which could promote the radial growth. In addition, the wavelet analysis showed that the radial growth of trees in this area might be affected by large-scale coupling effects of atmospheric-ocean-land changes. In conclusion, climate warming was beneficial to the radial growth of P. sylvestriformis, while drought stress caused by warming was the main factor limiting the radial growth of P. jezoensis. If the global temperature continues to increase in the future, it will have an adverse impact on P. jezoensis. The results would help improve our understanding of the responses of radial growth of P. sylvestriformis and P. jezoensis to future climate change, and provide some basic data for climate reconstruction using both species.
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Affiliation(s)
- Jian Yu
- School of Landscape Architecture, Jiangsu Vocational College of Agriculture and Forestry, Jurong 212400, Jiangsu, China.,College of Forestry, Beijing Forestry University, Beijing 100083, China
| | - Jia-Jia Chen
- School of Landscape Architecture, Jiangsu Vocational College of Agriculture and Forestry, Jurong 212400, Jiangsu, China
| | - Sheng-Wang Meng
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Hua Zhou
- Guizhou Academy of Forestry, Guiyang 550000, China
| | - Guang Zhou
- College of Forestry, Beijing Forestry University, Beijing 100083, China.,Jiangxi Academy of Forestry, Nanchang 330032, China
| | - Lu-Shuang Gao
- College of Forestry, Beijing Forestry University, Beijing 100083, China
| | - Yong-Ping Wang
- School of Landscape Architecture, Jiangsu Vocational College of Agriculture and Forestry, Jurong 212400, Jiangsu, China
| | - Qi-Jing Liu
- College of Forestry, Beijing Forestry University, Beijing 100083, China
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15
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Lange J, Carrer M, Pisaric MFJ, Porter TJ, Seo JW, Trouillier M, Wilmking M. Moisture-driven shift in the climate sensitivity of white spruce xylem anatomical traits is coupled to large-scale oscillation patterns across northern treeline in northwest North America. Glob Chang Biol 2020; 26:1842-1856. [PMID: 31799729 DOI: 10.1111/gcb.14947] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Accepted: 11/13/2019] [Indexed: 06/10/2023]
Abstract
Tree growth at northern treelines is generally temperature-limited due to cold and short growing seasons. However, temperature-induced drought stress was repeatedly reported for certain regions of the boreal forest in northwestern North America, provoked by a significant increase in temperature and possibly reinforced by a regime shift of the pacific decadal oscillation (PDO). The aim of this study is to better understand physiological growth reactions of white spruce, a dominant species of the North American boreal forest, to PDO regime shifts using quantitative wood anatomy and traditional tree-ring width (TRW) analysis. We investigated white spruce growth at latitudinal treeline across a >1,000 km gradient in northwestern North America. Functionally important xylem anatomical traits (lumen area, cell-wall thickness, cell number) and TRW were correlated with the drought-sensitive standardized precipitation-evapotranspiration index of the growing season. Correlations were computed separately for complete phases of the PDO in the 20th century, representing alternating warm/dry (1925-1946), cool/wet (1947-1976) and again warm/dry (1977-1998) climate regimes. Xylem anatomical traits revealed water-limiting conditions in both warm/dry PDO regimes, while no or spatially contrasting associations were found for the cool/wet regime, indicating a moisture-driven shift in growth-limiting factors between PDO periods. TRW reflected only the last shift of 1976/1977, suggesting different climate thresholds and a higher sensitivity to moisture availability of xylem anatomical traits compared to TRW. This high sensitivity of xylem anatomical traits permits to identify first signs of moisture-driven growth in treeline white spruce at an early stage, suggesting quantitative wood anatomy being a powerful tool to study climate change effects in the northwestern North American treeline ecotone. Projected temperature increase might challenge growth performance of white spruce as a key component of the North American boreal forest biome in the future, when drier conditions are likely to occur with higher frequency and intensity.
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Affiliation(s)
- Jelena Lange
- Institute of Botany and Landscape Ecology, University of Greifswald, Greifswald, Germany
| | - Marco Carrer
- Department TESAF, University of Padova, Padova, Italy
| | - Michael F J Pisaric
- Department of Geography and Tourism Studies, Brock University, Saint Catharines, ON, Canada
| | - Trevor J Porter
- Department of Geography, University of Toronto Mississauga, Mississauga, ON, Canada
| | - Jeong-Wook Seo
- Department of Wood & Paper Science, Chungbuk National University, Cheongju, Republic of Korea
| | - Mario Trouillier
- Institute of Botany and Landscape Ecology, University of Greifswald, Greifswald, Germany
| | - Martin Wilmking
- Institute of Botany and Landscape Ecology, University of Greifswald, Greifswald, Germany
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16
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Vitasse Y, Bottero A, Cailleret M, Bigler C, Fonti P, Gessler A, Lévesque M, Rohner B, Weber P, Rigling A, Wohlgemuth T. Contrasting resistance and resilience to extreme drought and late spring frost in five major European tree species. Glob Chang Biol 2019; 25:3781-3792. [PMID: 31436853 DOI: 10.1111/gcb.14803] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 07/04/2019] [Accepted: 08/01/2019] [Indexed: 05/23/2023]
Abstract
Extreme climate events (ECEs) such as severe droughts, heat waves, and late spring frosts are rare but exert a paramount role in shaping tree species distributions. The frequency of such ECEs is expected to increase with climate warming, threatening the sustainability of temperate forests. Here, we analyzed 2,844 tree-ring width series of five dominant European tree species from 104 Swiss sites ranging from 400 to 2,200 m a.s.l. for the period 1930-2016. We found that (a) the broadleaved oak and beech are sensitive to late frosts that strongly reduce current year growth; however, tree growth is highly resilient and fully recovers within 2 years; (b) radial growth of the conifers larch and spruce is strongly and enduringly reduced by spring droughts-these species are the least resistant and resilient to droughts; (c) oak, silver fir, and to a lower extent beech, show higher resistance and resilience to spring droughts and seem therefore better adapted to the future climate. Our results allow a robust comparison of the tree growth responses to drought and spring frost across large climatic gradients and provide striking evidence that the growth of some of the most abundant and economically important European tree species will be increasingly limited by climate warming. These results could serve for supporting species selection to maintain the sustainability of forest ecosystem services under the expected increase in ECEs.
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Affiliation(s)
- Yann Vitasse
- WSL Swiss Federal Institute for Forest, Snow and Landscape Research, Birmensdorf, Switzerland
- SwissForestLab, Birmensdorf, Switzerland
| | - Alessandra Bottero
- WSL Swiss Federal Institute for Forest, Snow and Landscape Research, Birmensdorf, Switzerland
- SwissForestLab, Birmensdorf, Switzerland
| | - Maxime Cailleret
- WSL Swiss Federal Institute for Forest, Snow and Landscape Research, Birmensdorf, Switzerland
- SwissForestLab, Birmensdorf, Switzerland
- UMR RECOVER, Aix Marseille Univ, IRSTEA, Aix-en-Provence, France
| | - Christof Bigler
- SwissForestLab, Birmensdorf, Switzerland
- Forest Ecology, Department of Environmental Systems Science, ETH Zurich, Zurich, Switzerland
| | - Patrick Fonti
- WSL Swiss Federal Institute for Forest, Snow and Landscape Research, Birmensdorf, Switzerland
- SwissForestLab, Birmensdorf, Switzerland
| | - Arthur Gessler
- WSL Swiss Federal Institute for Forest, Snow and Landscape Research, Birmensdorf, Switzerland
- SwissForestLab, Birmensdorf, Switzerland
- Institute of Terrestrial Ecology, ETH Zürich, Zürich, Switzerland
| | - Mathieu Lévesque
- SwissForestLab, Birmensdorf, Switzerland
- Forest Ecology, Department of Environmental Systems Science, ETH Zurich, Zurich, Switzerland
| | - Brigitte Rohner
- WSL Swiss Federal Institute for Forest, Snow and Landscape Research, Birmensdorf, Switzerland
- SwissForestLab, Birmensdorf, Switzerland
| | - Pascale Weber
- WSL Swiss Federal Institute for Forest, Snow and Landscape Research, Birmensdorf, Switzerland
| | - Andreas Rigling
- WSL Swiss Federal Institute for Forest, Snow and Landscape Research, Birmensdorf, Switzerland
- SwissForestLab, Birmensdorf, Switzerland
- Institute of Terrestrial Ecology, ETH Zürich, Zürich, Switzerland
| | - Thomas Wohlgemuth
- WSL Swiss Federal Institute for Forest, Snow and Landscape Research, Birmensdorf, Switzerland
- SwissForestLab, Birmensdorf, Switzerland
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17
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Liu Y, Song H, Sun C, Song Y, Cai Q, Liu R, Lei Y, Li Q. The 600-mm precipitation isoline distinguishes tree-ring-width responses to climate in China. Natl Sci Rev 2019; 6:359-368. [PMID: 34691874 PMCID: PMC8291455 DOI: 10.1093/nsr/nwy101] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 08/07/2018] [Accepted: 09/12/2018] [Indexed: 11/23/2022] Open
Abstract
The numerous temperature and precipitation reconstructions in China based on tree-ring-width data have played significant roles in furthering the understanding of past climate changes. However, the geographical variability in the responses of trees to climate variations in China remains largely undetermined. Here, we describe an important spatial boundary in the response of trees to climate variations, namely the 600-mm annual precipitation isoline. We found that, to the north of this line, tree-ring widths are usually positively correlated with precipitation and negatively correlated with growing-season temperature. To the south of this line, the tree-ring widths respond positively to temperature, and winter half-year temperatures are the main reconstructed parameters, especially on the third topographical step of China. We also found that precipitation reconstructions based on tree-ring data and the Palmer Drought Severity Index almost exclusively fall in the region of the 200- to 600-mm annual precipitation isolines, not other regions. Our findings indicate that, when using multiple tree-ring-width chronologies for large-scale past climate reconstructions, the climatic signal of each tree-ring-width series should be carefully considered.
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Affiliation(s)
- Yu Liu
- The State Key Laboratory of Loess and Quaternary Geology, Center for Excellence in Quaternary Science and Global Change, The Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.,Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.,Interdisciplinary Research Center of Earth Science Frontier and Joint Center for Global Change Studies, Beijing Normal University, Beijing 100875, China.,School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Huiming Song
- The State Key Laboratory of Loess and Quaternary Geology, Center for Excellence in Quaternary Science and Global Change, The Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.,Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Changfeng Sun
- The State Key Laboratory of Loess and Quaternary Geology, Center for Excellence in Quaternary Science and Global Change, The Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Yi Song
- The State Key Laboratory of Loess and Quaternary Geology, Center for Excellence in Quaternary Science and Global Change, The Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Qiufang Cai
- The State Key Laboratory of Loess and Quaternary Geology, Center for Excellence in Quaternary Science and Global Change, The Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Ruoshi Liu
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Ying Lei
- The State Key Laboratory of Loess and Quaternary Geology, Center for Excellence in Quaternary Science and Global Change, The Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Qiang Li
- The State Key Laboratory of Loess and Quaternary Geology, Center for Excellence in Quaternary Science and Global Change, The Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
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18
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Lange J, Buras A, Cruz-García R, Gurskaya M, Jalkanen R, Kukarskih V, Seo JW, Wilmking M. Climate Regimes Override Micro-Site Effects on the Summer Temperature Signal of Scots Pine at Its Northern Distribution Limits. Front Plant Sci 2018; 9:1597. [PMID: 30467508 PMCID: PMC6235909 DOI: 10.3389/fpls.2018.01597] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 10/15/2018] [Indexed: 06/09/2023]
Abstract
Tree growth at northern boreal treelines is generally limited by summer temperature, hence tree rings serve as natural archives of past climatic conditions. However, there is increasing evidence that a changing summer climate as well as certain micro-site conditions can lead to a weakening or loss of the summer temperature signal in trees growing in treeline environments. This phenomenon poses a challenge to all applications relying on stable temperature-growth relationships such as temperature reconstructions and dynamic vegetation models. We tested the effect of differing ecological and climatological conditions on the summer temperature signal of Scots pine at its northern distribution limits by analyzing twelve sites distributed along a 2200 km gradient from Finland to Western Siberia (Russia). Two frequently used proxies in dendroclimatology, ring width and maximum latewood density, were correlated with summer temperature for the period 1901-2013 separately for (i) dry vs. wet micro-sites and (ii) years with dry/warm vs. wet/cold climate regimes prevailing during the growing season. Differing climate regimes significantly affected the temperature signal of Scots pine at about half of our sites: While correlations were stronger in wet/cold than in dry/warm years at most sites located in Russia, differing climate regimes had only little effect at Finnish sites. Both tree-ring proxies were affected in a similar way. Interestingly, micro-site differences significantly affected absolute tree growth, but had only minor effects on the climatic signal at our sites. We conclude that, despite the treeline-proximal location, growth-limiting conditions seem to be exceeded in dry/warm years at most Russian sites, leading to a weakening or loss of the summer temperature signal in Scots pine here. With projected temperature increase, unstable summer temperature signals in Scots pine tree rings might become more frequent, possibly affecting dendroclimatological applications and related fields.
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Affiliation(s)
- Jelena Lange
- Institute of Botany and Landscape Ecology, University of Greifswald, Greifswald, Germany
| | - Allan Buras
- Forest Ecology and Forest Management, Wageningen University and Research, Wageningen, Netherlands
| | - Roberto Cruz-García
- Institute of Botany and Landscape Ecology, University of Greifswald, Greifswald, Germany
| | - Marina Gurskaya
- Institute of Plant and Animal Ecology, UB of the Russian Academy of Sciences, Yekaterinburg, Russia
| | - Risto Jalkanen
- Natural Resources Institute Finland (Luke), Rovaniemi Research Unit, Rovaniemi, Finland
| | - Vladimir Kukarskih
- Institute of Plant and Animal Ecology, UB of the Russian Academy of Sciences, Yekaterinburg, Russia
| | - Jeong-Wook Seo
- Department of Wood and Paper Science, College of Agriculture, Life and Environmental Sciences, Chungbuk National University, Cheongju, South Korea
| | - Martin Wilmking
- Institute of Botany and Landscape Ecology, University of Greifswald, Greifswald, Germany
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19
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Huang M, Wang X, Keenan TF, Piao S. Drought timing influences the legacy of tree growth recovery. Glob Chang Biol 2018; 24:3546-3559. [PMID: 29729065 DOI: 10.1111/gcb.14294] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 03/18/2018] [Accepted: 04/18/2018] [Indexed: 06/08/2023]
Abstract
Whether and how the timing of extreme events affects the direction and magnitude of legacy effects on tree growth is poorly understood. In this study, we use a global database of Ring-Width Index (RWI) from 2,500 sites to examine the impact and legacy effects (the departure of observed RWI from expected RWI) of extreme drought events during 1948-2008, with a particular focus on the influence of drought timing. We assessed the recovery of stem radial growth in the years following severe drought events with separate groupings designed to characterize the timing of the drought. We found that legacies from extreme droughts during the dry season (DS droughts) lasted longer and had larger impacts in each of the 3 years post drought than those from extreme droughts during the wet season (WS droughts). At the global scale, the average integrated legacy from DS droughts (0.18) was about nine times that from WS droughts (0.02). Site-level comparisons also suggest stronger negative impacts or weaker positive impacts of DS droughts on tree growth than WS droughts. Our results, therefore, highlight that the timing of drought is a crucial factor determining drought impacts on tree recovery. Further increases in baseline aridity could therefore exacerbate the impact of punctuated droughts on terrestrial ecosystems.
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Affiliation(s)
- Mengtian Huang
- Sino-French Institute for Earth System Science, College of Urban and Environmental Sciences, Peking University, Beijing, China
- Lawrence Berkeley National Laboratory, Berkeley, California
| | - Xuhui Wang
- Sino-French Institute for Earth System Science, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Trevor F Keenan
- Lawrence Berkeley National Laboratory, Berkeley, California
- UC Berkeley, Berkeley, California
| | - Shilong Piao
- Sino-French Institute for Earth System Science, College of Urban and Environmental Sciences, Peking University, Beijing, China
- Key Laboratory of Alpine Ecology and Biodiversity, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China
- Center for Excellence in Tibetan Earth Science, Chinese Academy of Sciences, Beijing, China
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Lu WW, Yu XX, Jia GD, Li HZ, Liu ZQ. [Tree-ring δ 13C and water use efficiency of Platycladus orientalis in mountains of Beijing]. Ying Yong Sheng Tai Xue Bao 2017; 28:2128-2134. [PMID: 29741041 DOI: 10.13287/j.1001-9332.201707.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Water use efficiency (WUE) is different among species and regions. Few literatures have been reviewed related to long-term WUE of Platycladus orientalis in mountainous areas of Beijing, China. Tree-ring δ13C of P. orientalis was used to determine the long-term variation of annual intrinsic water use efficiency (WUEi) and its response to environmental change. Combining with quantification of tree-ring width, the relationship between net carbon sequestration and WUEi of P. orientalis was eventually explored. The results showed that mean annual temperature increased with the increase of time from 1918 to 2013, whereas annual precipitation fiercely fluctuated. Tree-ring δ13C decreased and WUEi increased over time. WUEi was positively related and more sensitive to air temperature increasing than temperature decreasing. Correlation between WUEi and fluctuated annualprecipitation was ambiguous, which indicated the precipitation was not the main factor affecting WUEi. The de-trend tree-ring width of P. orientalis increased initially and then decreased, especially in recent 20 years. According to the correlation between WUEi and environmental factors, temperature resulted in stomatal conductance (gs) decreasing, which caused a reduction in evapotranspiration and an increase in respiratory loss, leading to the increase of WUEi and a down trend in net carbon sequestration and tree growth.
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Affiliation(s)
- Wei Wei Lu
- College of Water and Soil Conservation, Beijing Forestry University/Key Laboratory of Soil and Water Conservation and Desertification Combating, Ministry of Education, Beijing 100083, China
| | - Xin Xiao Yu
- College of Water and Soil Conservation, Beijing Forestry University/Key Laboratory of Soil and Water Conservation and Desertification Combating, Ministry of Education, Beijing 100083, China
| | - Guo Dong Jia
- College of Water and Soil Conservation, Beijing Forestry University/Key Laboratory of Soil and Water Conservation and Desertification Combating, Ministry of Education, Beijing 100083, China
| | - Han Zhi Li
- College of Water and Soil Conservation, Beijing Forestry University/Key Laboratory of Soil and Water Conservation and Desertification Combating, Ministry of Education, Beijing 100083, China
| | - Zi Qiang Liu
- College of Water and Soil Conservation, Beijing Forestry University/Key Laboratory of Soil and Water Conservation and Desertification Combating, Ministry of Education, Beijing 100083, China
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Petrucco L, Nardini A, von Arx G, Saurer M, Cherubini P. Isotope signals and anatomical features in tree rings suggest a role for hydraulic strategies in diffuse drought-induced die-back of Pinus nigra. Tree Physiol 2017; 37:523-535. [PMID: 28338978 DOI: 10.1093/treephys/tpx031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 03/08/2017] [Indexed: 06/06/2023]
Abstract
The 2003 and 2012 summer seasons were among the warmest and driest of the last 200 years over southeastern Europe, and in particular in the Karst region (northeastern Italy). Starting from winter-spring 2013, several black pines (Pinus nigra J.F. Arnold) suffered crown die-back. Declining trees occurred nearby individuals with no signs of die-back, raising hypotheses about the occurrence of individual-specific hydraulic strategies underlying different responses to extreme drought. We investigated possible processes driving black pine decline by dendrochronological and wood anatomical measurements, coupled with analysis of tree-ring carbon (δ13C) and oxygen (δ18O) isotopic composition in healthy trees (H) and trees suffering die-back (D). Die-back trees showed higher growth rates than H trees at the beginning of the last century, but suffered important growth reduction following the dry summers in 2003 and 2012. After the 2012 drought, D trees produced tracheids with larger diameter and greater vulnerability to implosion than H ones. Healthy trees had significantly higher wood δ13C than D trees, reflecting higher water-use efficiency for the surviving trees, i.e., less water transpired per unit carbon gain, which could be related to lower stomatal conductance and a more conservative use of water. Relatively high δ18O for D trees indicates that they were strongly dependent on shallow water sources, or that they sustained higher transpiration rates than H trees. Our results suggest that H trees adopted a more conservative water-use strategy under drought stress compared with D trees. We speculate that this diversity might have a genotypic basis, but other possible explanations, like different rooting depth, cannot be ruled out.
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Affiliation(s)
- Laura Petrucco
- Dipartimento di Scienze della Vita, Università di Trieste, Via L. Giorgieri 10, I-34127 Trieste, Italy
- Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Zürcherstrasse 111, CH-8903 Birmensdorf, Switzerland
| | - Andrea Nardini
- Dipartimento di Scienze della Vita, Università di Trieste, Via L. Giorgieri 10, I-34127 Trieste, Italy
| | - Georg von Arx
- Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Zürcherstrasse 111, CH-8903 Birmensdorf, Switzerland
| | - Matthias Saurer
- Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
| | - Paolo Cherubini
- Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Zürcherstrasse 111, CH-8903 Birmensdorf, Switzerland
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Churakova Sidorova OV, Saurer M, Bryukhanova MV, Siegwolf RTW, Bigler C. Site-specific water-use strategies of mountain pine and larch to cope with recent climate change. Tree Physiol 2016; 36:942-953. [PMID: 27468738 DOI: 10.1093/treephys/tpw060] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 06/09/2016] [Indexed: 06/06/2023]
Abstract
We aim to achieve a mechanistic understanding of the eco-physiological processes in Larix decidua and Pinus mugo var. uncinata growing on north- and south-facing aspects in the Swiss National Park in order to distinguish the short- and long-term effects of a changing climate. To strengthen the interpretation of the δ(18)O signal in tree rings and its coherence with the main factors and processes driving evaporative δ(18)O needle water enrichment, we analyzed the δ(18)O in needle, xylem and soil water over the growing season in 2013 and applied the mechanistic Craig-Gordon model (1965) for the short-term responses. We found that δ(18)O needle water strongly reflected the variability of relative humidity mainly for larch, while only δ(18)O in pine xylem water showed a strong link to δ(18)O in precipitation. Larger differences in offsets between modeled and measured δ(18)O needle water for both species from the south-facing aspects were detected, which could be explained by the high transpiration rates. Different soil water and needle water responses for the two species indicate different water-use strategies, further modulated by the site conditions. To reveal the long-term physiological response of the studied trees to recent and past climate changes, we analyzed δ(13)C and δ(18)O in wood chronologies from 1900 to 2013. Summer temperatures as well as summer and annual amount of precipitations are important factors for growth of both studied species from both aspects. However, mountain pine trees reduced sensitivity to temperature changes, while precipitation changes come to play an important role for the period from 1980 to 2013. Intrinsic water-use efficiency (WUEi) calculated for larch trees since the 1990s reached a saturation point at elevated CO2 Divergent trends between pine WUEi and δ(18)O are most likely indicative of a decline of mountain pine trees and are also reflected in decoupling mechanisms in the isotope signals between needles and tree-rings.
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Affiliation(s)
- Olga V Churakova Sidorova
- Department of Environmental Systems Science, Forest Ecology, Institute of Terrestrial Ecosystems, ETH Zürich, Universitätstrasse 16, 8092 Zürich, Switzerland Paul Scherrer Institute, 5232 Villigen, PSI, Switzerland Dendrolab.ch, Institute of Geological Sciences, University of Bern, Balzerstrasse 1+3, 3012 Bern, Switzerland
| | | | - Marina V Bryukhanova
- V.N. Sukachev Institute of Forest, SB RAS, 660036 Krasnoyarsk, Akademgorodok, Russia Siberian Federal University, 79 Svobodny pr., 660041 Krasnoyarsk, Russia
| | | | - Christof Bigler
- Department of Environmental Systems Science, Forest Ecology, Institute of Terrestrial Ecosystems, ETH Zürich, Universitätstrasse 16, 8092 Zürich, Switzerland
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