%0 Journal Article
%T New insights into assembly processes and driving factors of urban soil microbial community under environmental stress in Beijing.
%A Chen Y
%A Tao S
%A Ma J
%A Qu Y
%A Sun Y
%A Wang M
%A Cai Y
%J Sci Total Environ
%V 947
%N 0
%D 2024 Oct 15
%M 38972416
%F 10.753
%R 10.1016/j.scitotenv.2024.174551
%X Rapid urbanization leads to drastic environmental changes, directly or indirectly affecting the structure and function of soil microbial communities. However, the ecological response of soil microbes to environmental stresses has not yet been fully explored. In this study, we used high-throughput sequencing to analyze the assembly mechanism and driving factors of soil microbial community under environmental stresses. The results indicated that environmental stresses significantly affected soil properties and the levels of beryllium, cobalt, antimony, and vanadium contamination in soil generally increased from the suburban areas toward the city core. The composition and distribution of soil microbial communities demonstrated clear differences under different levels of environmental stress, but there was no significant difference in microbial diversity. Random forest and partial least squares structural equation modeling results suggested that multiple factors influenced microbial diversity, but antimony was the key driver. The influence of environmental stress led to deterministic processes dominating microbial community assembly processes, which promoted the regional homogenization of soil microbes. Therefore, this study provides new insights into urban soil microbial management under environmental stresses.