Climate warming suppresses abundant soil fungal taxa and reduces soil carbon efflux in a semi-arid grassland
作者机构：College of Resources and Environmental SciencesNanjing Agricultural UniversityNanjingChina Ningxia Yunwu Mountains Grassland Natural Reserve AdministrationGuyuanChina State Key Laboratory of Loess and Quaternary GeologyInstitute of Earth EnvironmentChinese Academy of SciencesXi'anChina Research Center for Advanced Science and TechnologyThe University of TokyoTokyoJapan Department of Entomology&Plant PathologyNorth Carolina State UniversityRaleighNorth CarolinaUSA
出 版 物：《mLife》 (微生物（英文）)
年 卷 期：2023年第2卷第4期
页 面：389-400页
核心收录：
基 金：supported by National Natural Science Foundation of China (NSFC) (Nos.32371626 and 32001140) China Postdoctoral Science Foundation (No.2022T150325)
主 题：climate warming microbial diversity precipitation reduction soil carbon dynamics
摘 要：Soil microorganisms critically affect the ecosystem carbon(C)balance and C-climate feedback by directly controlling organic C decomposition and indirectly regulating nutrient availability for plant C ***,the effects of climate change drivers such as warming,precipitation change on soil microbial communities,and C dynamics remain poorly *** a long-term field warming and precipitation manipulation in a semi-arid grassland on the Loess Plateau and a complementary incubation experiment,here we show that warming and rainfall reduction differentially affect the abundance and composition of bacteria and fungi,and soil C *** significantly reduced the abundance of fungi but not bacteria,increasing the relative dominance of bacteria in the soil microbial *** particular,warming shifted the community composition of abundant fungi in favor of oligotrophic Capnodiales and Hypocreales over potential saprotroph ***,precipitation reduction increased soil total microbial biomass but did not significantly affect the abundance or diversity of ***,the community composition of abundant,but not rare,soil fungi was significantly correlated with soil CO_(2) *** findings suggest that alterations in the fungal community composition,in response to changes in soil C and moisture,dominate the microbial responses to climate change and thus control soil C dynamics in semi-arid grasslands.
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