文献类型：期刊文献

英文题名：Effect of Wind on the Relation of Leaf N, P Stoichiometry with Leaf Morphology in Quercus Species

作者：Zhang, Peng[1] Wang, Hua[2] Wu, Qianting[1] Yu, Mukui[1] Wu, Tonggui[1,3]

通信作者：Wu, TG[1];Wu, TG[2]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, East China Coastal Forest Ecosyst Long Term Res S, Hangzhou 311400, Zhejiang, Peoples R China;[2]Dongtai Forest Ctr, Dongtai 224200, Peoples R China;[3]Clemson Univ, Dept Forestry & Environm Conservat, Clemson, SC 29634 USA

年份：2018

卷号：9

期号：3

外文期刊名：FORESTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000428508200013)】；

基金：This project was supported by National Natural Science Foundation of China (No. 31200533, 31570583). We thank Bridget Blood from Clemson University for language improvement.

语种：英文

外文关键词：leaf N; P stoichiometry; leafmorphology; synchronous variations; wind load; Quercus species

摘要：Leaf nitrogen (N) and phosphorus (P) stoichiometry correlates closely to leaf morphology, which is strongly impacted by wind at multiple scales. However, it is not clear how leaf N, P stoichiometry and its relationship to leaf morphology changes with wind load. We determined the leaf N and P concentrations and leaf morphology-including specific leaf area (SLA) and leaf dissection index (LDI)-for eight Quercus species under a simulated wind load for seven months. Leaf N and P concentrations increased significantly under these conditions for Quercus acutissima, Quercus rubra, Quercus texana, and Quercus palustris-which have elliptic leaves-due to their higher N, P requirements and a resultant leaf biomass decrease, which is a tolerance strategy for Quercus species under a wind load. Leaf N: P was relatively stable under wind for all species, which supports stoichiometric homeostasis. Leaf N concentrations showed a positive correlation to SLA, leaf N and P concentrations showed positive correlations to LDI under each wind treatment, and the slope of correlations was not affected by wind, which indicates synchronous variations between leaf stoichiometry and leaf morphology under wind. However, the intercept of correlations was affected by wind, and leaf N and P use efficiency decreased under the wind load, which suggests that the Quercus species changes from "fast investment-return" in the control to "slow investment-return" under windy conditions. These results will be valuable to understanding functional strategies for plants under varying wind loads, especially synchronous variations in leaf traits along a wind gradient.