Radial growth response of major conifers to climate change on Haba Snow Mountain,Southwestern China |
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| Institution: | 1. National Plateau Wetlands Research Center/Wetlands College, Southwest Forestry University, Kunming, China;2. MOE Key Laboratroy of Western China’ Environmental Systems, College of Earth Environmental Sciences, Lanzhou University, Lanzhou, China;1. Wood Processing and Biomaterials, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, 165 00, Prague 6, Kamýcká 129, Czech Republic;2. Forestry and Game Management Research Institute, 252 02, Jílovi?tě, Strnady 136, Czech Republic;3. Institute of Botany of the Czech Academy of Sciences, 252 43, Pr?honice, Zámek 1, Czech Republic;1. Departamento de Botánica, Universidade de Santiago de Compostela, Escola Politécnica Superior de Enxeñaría, Campus Terra, 27002 Lugo, Spain;2. Área de Botánica, Departamento de Ciencias Agroforestales, EiFAB, Universidad de Valladolid, Campus Duques de Soria, 42004 Soria, Spain;1. State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China;2. Royal Botanic Garden Edinburgh, 20a Inverleith Row, Edinburgh, EH35LR, Scotland, UK;3. Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China;4. University of Chinese Academy of Sciences, Beijing, 100049, China |
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| Abstract: | Climate change has an inevitable impact on forest ecosystems, to better understand the influence of climate change on forest growth, we analyzed the growth response of four major conifers to climate on Haba Snow Mountain in central Hengduan Mountains. Tree ring samples were taken from four species at their upper distributional limits, and residual chronologies were developed by using tree ring width data. Response function and redundancy analysis were taken to reveal the key climatic factors affecting tree growth and moving interval analysis was applied to detect the stability of growth-climate relationships. The results showed that previous November temperature, precipitation in current February, current May and current June were common factors affecting the radial growth of the studied species. Abies georgei was mainly influenced by the temperature in previous November. The photothermal condition in May and June controlled the growth of Larix potaninii. Moisture condition in previous August and current May was the key factor affecting Pinus densata growth. As for Pinus yunnanensis, the drought in current May was the limiting factor influencing its growth. The dynamic relationship between tree growth and climatic factors varied among species, and the results were consistent with response function analysis. A forecast in future forest growth on Haba Snow Mountain was complex, since future climate change had both positive and negative effects on the radial growth of four major conifers. |
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| Keywords: | Dendrochronology Northwestern Yunnan plateau Climate change Growth response |
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