文献类型：期刊文献

英文题名：Environment-driven intraspecific variation shows coordination of functional traits of deciduous oaks among and within different biological levels

作者：Lin, Yutong[1,2,3,4] Lai, Yuan[1,3,4] Tang, Songbo[1,3,4] Cavender-Bares, Jeannine[5] Penuelas, Josep[6,7] Sardans, Jordi[6,7] Liu, Jianfeng[8] Zhang, Lingling[1,4] Kuang, Yuanwen[1,3,4]

第一作者：Lin, Yutong

通信作者：Kuang, YW[1];Kuang, YW[2];Kuang, YW[3]

机构：[1]Chinese Acad Sci, Key Lab Vegetat Restorat & Management Degraded Ec, South China Bot Garden, Guangzhou 510650, Peoples R China;[2]Yulin Normal Univ, Yulin 537000, Peoples R China;[3]Univ Chinese Acad Sci, Beijing 100049, Peoples R China;[4]Chinese Acad Sci, Guangdong Prov Key Lab Appl Bot, South China Bot Garden, Guangzhou 510650, Peoples R China;[5]Univ Minnesota, Dept Ecol Evolut & Behav, St Paul, MN 55108 USA;[6]UAB, CSIC, CREAF, Global Ecol Unit, Barcelona 08193, Catalonia, Spain;[7]CREAF, Barcelona 08193, Catalonia, Spain;[8]Chinese Acad Forestry, Res Inst Forestry, Beijing 100091, Peoples R China

年份：2024

卷号：35

期号：1

外文期刊名：JOURNAL OF FORESTRY RESEARCH

收录：;EI(收录号：20241816013833);Scopus(收录号：2-s2.0-85191653554);WOS:【SCI-EXPANDED(收录号:WOS:001211726200002)】；

基金：This study was supported by the Key Area Research and Development Program of Guangdong Province (2022B1111230001), the Science and Technology Foundation of Guangxi Zhuang Autonomous Region (Guike AD23026080), the National Natural Science Founda tion of China(No. 42071065), and Natural Science Foundation of US (No. 2021898).

语种：英文

外文关键词：Climate gradient; Intraspecific variation; Plant functional traits; Deciduous Quercus species; Whole-plant function

摘要：Deciduous oaks (Quercus spp.) are distributed from subalpine to tropical regions in the northern hemisphere and have important roles as carbon sinks and in climate change mitigation. Determining variations in plant functional traits at multiple biological levels and linking them to environmental variables across geographical ranges is important for forecasting range-shifts of broadly-distributed species under climate change. We sampled leaves of five deciduous Quercus spp. covering approximately 20 degrees of latitude (similar to 21 degrees N-41 degrees N) and 20 longitude (similar to 99 degrees E-119 degrees E) across China and measured 12 plant functional traits at different biological levels. The traits varied distinctively, either within each biological level or among different levels driven by climatic and edaphic variables. Traits at the organ level were significantly correlated with those at the cellular and tissue levels, while traits at the whole-plant level only correlated with those at the tissue level. The Quercus species responded to changing environments by regulating stomatal size, leaf thickness and the palisade mesophyll thickness to leaf thickness ratios with contrasting degree of effect to adjust the whole-plant functioning, i.e., intrinsic water use efficiency (iWUE), carbon supply and nitrogen availability. The results suggest that these deciduous Quercus spp. will maintain vigour by increasing iWUE when subjected to large temperature changes and insufficient moisture, and by accumulating leaf non-structural carbohydrates under drought conditions. The findings provide new insights into the inherent variation and trait coordination of widely distributed tree species in the context of climate change.