Infl uence of altitude and tree class on climate-growth relationships in a larch plantation in subtropical China

作     者：Chunyan Wu Dongsheng Chen Xiaomei Sun Shougong Zhang Chunyan Wu;Dongsheng Chen;Xiaomei Sun;Shougong Zhang

作者机构：State Key Laboratory of Tree Genetics and BreedingKey Laboratory of Tree Breeding and Cultivation of National Forestry and Grassland AdministrationResearch Institute of ForestryChinese Academy of ForestryBeijing 100091People’s Republic of China 

出 版 物：《Journal of Forestry Research》 (林业研究（英文版）)

年 卷 期：2023年第34卷第6期

页      面：1869-1880页

核心收录：

学科分类：0907[农学-林学] 08[工学] 0829[工学-林业工程] 09[农学] 

基　　金：funded by Fundamental Research Funds of CAF (CAFYBB2022ZA00103) National Natural Science Foundation of China (General Program)(31971652) National Natural Science Foundation of China (32001308) Fundamental Research Funds of CAF (CAFYBB2022ZC001) 

主　　题：Tree-ring width index Chronology Correlation coeffi cient Additive mixed models Tree classes 

摘      要：Precise quantifi cation of climate-growth relationships can make a major contribution to scientifi c forest ***,whether diff erences in the response of growth to climate at diff erent altitudes remains *** answer this,264 trees of Larix kaempferi from 88 plots,representing diff erent altitudinal ranges(1000-2100 m)and tree classes were sampled and used to develop tree-ring ***-ring growth(TRG)was either positively(dominant)or negatively(intermediate and suppressed)correlated with climate in diff erent tree classes at diff erent *** was strongly correlated with growing season at low altitudes,but was less sensitive to climate at middle *** was mainly limited by precipitation and was highly sensitive to climate at low ***-growth relationships at high altitudes were opposite compared to those at low *** of dominant trees was more sensitive to climate change compared to intermediate and suppressed *** factors(annual temperatures;moisture,the number of frost-free days)had diff erent eff ects on tree-ring growth of diff erent tree classes along altitudinal *** was concluded that the increase in summer temperatures decreased water availability,resulting in a signifi cant decline in growth rates after 2005 at lower *** is suitable for planting in middle altitudes and dominant trees were the best sampling choice for accurately assessing climate-growth relationships.