Changes in diversity,composition and assembly processes of soil microbial communities during Robinia pseudoacacia *** on the Loess Plateau,China

作     者：WANG Kun WANG Xiaoxia FEI Hongyan WAN Chuanyu HAN Fengpeng WANG Kun;WANG Xiaoxia;FEI Hongyan;WAN Chuanyu;HAN Fengpeng

作者机构：State Key Laboratory of Soil Erosion and Dryland Farming on the Loess PlateauCollege of Natural Resources and EnvironmentNorthwest A&F UniversityYangling 712100China Research Center on Soil&Water ConservationInstitute of Soil and Water ConservationChinese Academy of Sciences and Ministry of Water ResourcesYangling 712100China 

出 版 物：《Journal of Arid Land》 (干旱区科学（英文版）)

年 卷 期：2022年第14卷第5期

页      面：561-575页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0907[农学-林学] 08[工学] 0829[工学-林业工程] 09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学] 

基　　金：supported by the National Natural Science Foundation of China(41471437) the National Key R&D Program of China(2016YFA0600801,2017YFC0504504) the West Light Foundation of the Chinese Academy of Science(XAB2016A04) the Key R&D Program of Ningxia Hui Autonomous Region,China(2022BBF02033) 

主　　题：Robinia pseudoacacia microbial diversity community structure community assembly restoration semi-arid regions 

摘      要：Robinia pseudoacacia L.(RP)restoration has increased vegetation cover in semi-arid regions on the Loess Plateau of China,but ecological problems have also occurred due to RP restoration,such as reduced soil ***,it is still uncertain how microbial diversity,composition and assembly processes change with RP restoration in semi-arid ***,amplicon sequencing of small subunit ribosomal ribonucleic acid(16S rRNA)and internal transcribed spacer(ITS)genes was performed to study soil bacterial and fungal diversity,composition and assembly processes at four study sites with different stand ages of RP plantations(Y10,RP plantation with stand ages less than 10 a;Y15,RP plantation with stand ages approximately 15 a;Y25,RP plantation with stand ages approximately 25 a;and Y40,RP plantation with stand ages approximately 40 a)along a 40-a chronosequence on the Loess *** diversity of soil bacteria and fungi increased significantly during the restoration period from 10 to 15 a(P0.05).However,compared with Y15,bacterial diversity was lower at Y25 and Y40,and fungal diversity remained stable during the restoration period between 25 and 40 *** relative abundances of Proteobacteria and Ascomycota increased during the restoration period from 10 to 15 ***,after 15 a of restoration,they both decreased,whereas the relative abundances of Actinomycetes,Acidobacteria and Basidiomycota gradually *** variations in soil bacterial communities were mainly related to changes in soil total nitrogen,nitrate nitrogen and moisture contents,while soil fungal communities were mainly shaped by soil organic carbon and nitrate nitrogen *** communities were structured by the heterogeneous selection and stochastic process,while fungal communities were structured primarily by the stochastic *** RP restoration induced an increase in the relative importance of heterogeneous selection on bacterial ***,this study reveals t