Seasonality regulates the effects of resource addition on plant diversity and ecosystem functioning in semi-arid grassland
季节性调控资源添加对半干旱草原物种多样性与生态系统功能的影响作者机构：State Key Laboratory of Vegetation and Environmental ChangeInstitute of BotanyChinese Academy of SciencesBeijing 100093China Research Institute of ForestryChinese Academy of ForestryBeijing 100091China Grassland Research CenterNational Forestry and Grassland AdministrationBeijing 100091China Collaborative Innovation Center of Jiangxi Typical Trees Cultivation and UtilizationCollege of ForestryJiangxi Agricultural UniversityNanchang 330045China College of Biological and Pharmaceutical SciencesChina Three Gorges UniversityYichang 443002China College of LifesciencesUniversity of Chinese Academy of SciencesBeijing 100049China College of Resources and EnvironmentUniversity of Chinese Academy of SciencesBeijing 100049China
出 版 物：《Journal of Plant Ecology》 (植物生态学报（英文版）)
年 卷 期：2021年第14卷第6期
页 面：1143-1157页
核心收录：
学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学]
主 题：season resource enrichment species richness aboveground net primary productivity(ANPP) community stability plant functional groups
摘 要：Aims Seasonal variations in species richness,aboveground net primary productivity(ANPP)and stability under resource enrichment are frequently *** study explores how the impacts of resource enrichment on species richness,ANPP and stability vary among seasons in semi-arid *** We conducted a 3-year experiment in an Inner Mongolia grassland to determine the effects of resource input(water[W],nitrogen[N])on species richness,community ANPP and stability using seasonal sampling during the growing season(2013–2015).Structural equation modeling(SEM)was used to examine the relative importance of resource input on community stability via mechanistic pathways in each month and the whole growing *** Findings Resource inputs did not affect community ANPP in May and June,while N and/or NW enhanced ANPP in July and *** inputs generally did not affect species richness,asynchrony or community stability in most of the *** responses of perennial bunchgrasses(PB)to N and/or NW treatments contributed to the increased community ANPP in July and *** asynchrony may be the major mechanism contributing to community stability in May and June and the entire growing season,and PB stability is potentially the primary factor controlling community stability in July and August under resource *** results indicate that season and resource availability could interact to regulate species richness,community ANPP and stability in semi-arid *** findings have important implications for management practices in semi-arid grasslands in order to mitigate the impact of land use and global change.
维普期刊数据库