Variations in diversity,composition,and species interactions of soil microbial community in response to increased N deposition and precipitation intensity in a temperate grassland

作     者：Shuyan Cui Yushan Xiao Yu Zhou Pengfeng Wu Liqiang Cui Guo Zheng Shuyan Cui;Yushan Xiao;Yu Zhou;Pengfeng Wu;Liqiang Cui;Guo Zheng

作者机构：College of Life ScienceShenyang Normal UniversityShenyang 110034China School of Environmental Science and EngineeringYancheng Institute of TechnologyYancheng 224051China 

出 版 物：《Ecological Processes》 (生态过程（英文）)

年 卷 期：2023年第12卷第1期

页      面：495-506页

核心收录：

学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 09[农学] 0815[工学-水利工程] 0903[农学-农业资源与环境] 0713[理学-生态学] 090301[农学-土壤学] 

基　　金：supported by the National Natural Science Foundation of China(NSFC-31970410) Liaoning Revitalization Talents Program(XLYC2002083) Liaoning Province Science and Technology Plan Project(2018103004) Department of Science and Technology of Liaoning Province(2022JH5/10400111) 

主　　题：Microbial community composition Phospholipid fatty acid High-throughput sequencing Precipitation intensity N deposition 

摘      要：Background Global climate change has resulted in precipitation regimes exhibiting an increasing trend in rainfall intensity but a reduction in *** addition,nitrogen(N)deposition occurs simultaneously in arid and semi-arid *** biomass,diversity,composition,and species interactions are key determinants of ecological *** examined the effects of changes in precipitation intensity and N addition on the soil bacterial and fungal communities in a semi-arid grassland in Inner Mongolia,*** The microbial biomass(bacterial PLFAs and fungal PLFAs)was determined through phospholipid fatty acid(PLFA)analysis,and microbial diversity(Shannon index and evenness index)was determined with high-throughput sequencing(16S and ITS).Species interactions were determined using a molecular ecological network *** relationships between microbial community(bacterial community and fungal community)and environmental variables were examined by Mantel *** We found that N addition decreased fungal PLFA under moderate,high,and extreme precipitation intensity treatments and increased fungal community complexity under the high precipitation intensity ***,N addition increased bacterial diversity under moderate and high precipitation intensity treatments.N addition caused greater environmental stress to the fungal community,which was dominated by deterministic *** The effects of N deposition on soil bacterial and fungal communities were altered by precipitation *** changes in soil bacterial and fungal communities were different,implying that composition and functional traits adapt differently to projected global changes at a regional scale.