Environmental and spatial contributions to tree community assembly across life stages and scales in evergreen-deciduous broadleaf karst forests,southwest China

作     者：Liang Su Hu Du Fuping Zeng Wanxia Peng Hua Wang Kelin Wang Menzhen Lu Tongqing Song Liang Su;Hu Du;Fuping Zeng;Wanxia Peng;Hua Wang;Kelin Wang;Menzhen Lu;Tongqing Song

作者机构：Key Laboratory of Agro-Ecological Processes in Subtropical RegionInstitute of Subtropical AgricultureChinese Academic of SciencesChangshaPeople’s Republic of China Guangxi Key Laboratory of Karst Ecological Processes and ServicesHuanjiang Observation and Research Station of Karst EcosystemChinese Academic of SciencesHuanjiangPeople’s Republic of China College of Resources and EnvironmentHunan Agricultural UniversityChangshaPeople’s Republic of China 

出 版 物：《林业研究:英文版》 (Journal of Forestry Research)

年 卷 期：2023年第34卷第5期

页      面：1323-1331页

核心收录：

学科分类：09[农学] 0903[农学-农业资源与环境] 

基　　金：supported by the National Natural Science Foundation of China (42071073,31971487) Youth Innovation Promotion Association of the Chinese Academy of Sciences (2021366) Guangxi Key Research and Development Program (AB17129009) the Hechi Distinguished Expert Program to Fuping Zeng the Guangxi Bagui Scholarship Program to Dejun Li 

主　　题：Species composition Spatial distribution Variation partitioning Community assembly Karst ecosystems 

摘      要：Spatial and environmental processes are two ecological processes that have attracted considerable attention in plant community assembly,depending on sampling scale and life ***,the processes that determine community assembly have not been studied in the karst region of southwest *** this study,a 25-ha(500 m×500 m)monitoring plot within the subtropical climax forest in the karst region was established and canonical correspondence analysis was used to reveal the effects of topography and soil on the spatial patterns of tree community *** study suggests that spatial processes dominate species composition and the combined effects of spatial and environmental processes play an important *** interpretation rate increases with enlarging the sampling ***,the pattern of variation partitioning was similar in different life *** variables significantly affected species composition at different sampling sizes and life histories and had a higher interpretation rate of species composition on larger s ampling *** wetness index was the most important variable to explain species composition of the environmental *** results suggest that it is necessary to consider the relative importance of environmental and spatial factors on community assembly to better understand,conserve,and manage subtropical karst forests.