Drought weakens the positive effect of plant diversity on community biomass

作     者：Yanhui Hou Xiaona Li Yanxia Hu Xuwei Lu Yue Ma Wenmin Li Xiran Lü Zimo Li Yaxuan Bai Chao Wang 

作者机构：Institute of GrasslandFlowers and EcologyBeijing Academy of Agriculture and Forestry SciencesBeijing 100097China College of Grassland ScienceShanxi Agricultural UniversityJinzhong 030801China College of Landscape Architecture and ArtHenan Agricultural UniversityZhengzhou 450002China College of Agriculture and ForestryHebei North UniversityZhangjiakou 075000China 

基　　金：supported by the Natural Science Foundation of Beijing Municipality(5232006) the Beijing Academy of Agriculture and Forestry Sciences Special Project on Hi-Tech Innovation Capacity(QNJJ202217 and KJCX20230305) 

出 版 物：《Journal of Plant Ecology》 (植物生态学报（英文版）)

年 卷 期：2024年第17卷第4期

页      码：141-153页

摘      要：Drought can greatly impact the biodiversity of an ecosystem and play a crucial role in regulating its ***,the specific mechanisms by which drought mediate the biodiversity effect(BE)on community biomass in above-and belowground through functional traits remain poorly ***,we conducted a common garden experiment in a greenhouse,which included two plant species richness levels and two water addition levels,to analyze the effects of biodiversity on aboveground biomass(AGB),belowground biomass(BGB)and total biomass(TB),and to quantify the relationship between BEs and functional traits under drought *** analysis focused on partitioning BEs into above-and belowground complementarity effect(CE)and selection effect(SE)at the species level,which allowed us to better understand the impacts of biodiversity on community biomass and the underlying *** results showed that plant species richness stimulated AGB,BGB and TB through *** decreased AGB,BGB and TB,*** addition,the aboveground CE was positively associated with the variation in plant *** in above-and belowground were negatively correlated with the community mean plant height and root length,***,drought weakened the aboveground CE by decreasing variation in plant height,resulting in a reduction in AGB and *** findings demonstrate that the complementarity of species is an important regulator of community biomass in above-and belowground,the dynamics of biomass under environmental stress are associated with the response of sensitive compartments.

主 题 词：biodiversity effect drought plant height root length aboveground biomass belowground biomass 

学科分类：07[理学] 0713[0713] 

核心收录：

D　O　I：10.1093/jpe/rtae059

馆 藏 号：203131213...