The unimodal latitudinal pattern of K,Ca and Mg concentration and its potential drivers in forest foliage in eastern China

作     者：Zhijuan Shi Sining Liu Yahan Chen Dongdong Ding Wenxuan Han Zhijuan Shi;Sining Liu;Yahan Chen;Dongdong Ding;Wenxuan Han

作者机构：Key Laboratory of Plant-Soil InteractionsMinistry of EducationCollege of Resources and Environmental SciencesChina Agricultural UniversityBeijing100193China Forestry Ecological Engineering in the Upper Reaches of the Yangtze River Key Laboratory of Sichuan Province&National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze RiverCollege of ForestrySichuan Agricultural UniversityChengdu611130China Institute of BotanyChinese Academy of SciencesBeijing100093China 

出 版 物：《Forest Ecosystems》 (森林生态系统（英文版）)

年 卷 期：2024年第11卷第3期

页      面：318-328页

核心收录：

学科分类：0907[农学-林学] 09[农学] 0903[农学-农业资源与环境] 

基　　金：supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(XDA26040202) the National Natural Science Foundation of China(41173083) SL was also supported by the National Natural Science Foundation of China(32001165) the Natural Science Foundation of Sichuan Province(2022NSFSC1753) 

主　　题：Potassium Calcium Magnesium Mid-latitudes Latitudinal pattern Plant functional type Water stress Woody plant 

摘      要：Potassium(K),calcium(Ca),and magnesium(Mg)are essential elements with important physiological functions in *** studies showed that leaf K,Ca,and Mg concentrations generally increase with increasing ***,recent meta-analyses suggested the possibility of a unimodal pattern in the concentrations of these elements along latitudinal *** authenticity of this unimodal latitudinal pattern,however,requires validation through large-scale field experimental data,and exploration of the underlying mechanisms if the pattern is ***,we collected leaves of common species of woody plants from 19 montane forests in the north-south transect of eastern China,including 322 species from 160 genera,67 families;and then determined leaf K,Ca,and Mg concentrations to explore their latitudinal patterns and driving *** results support unimodal latitudinal patterns for all three elements in woody plants across eastern China,with peak values at latitude 36.5±1.0°*** shift of plant-functional-type compositions from evergreen broadleaves to deciduous broadleaves and to conifers along this latitudinal span was the key factor contributing to these *** factors,mainly temperature,and to a lesser extent solar radiation and precipitation,were the main environmental *** factors,by altering the composition of plant communities and regulating plant physiological activities,influence the latitudinal patterns of plant nutrient *** findings also suggest that high leaf K,Ca,and Mg concentrations may represent an adaptive strategy for plants to withstand water stress,which might be used to predict plant nutrient responses to climate changes at large scales,and broaden the understanding of biogeochemical cycling of K,Ca,and Mg.