Influence of tree species on soil microbial residue accumulation and distribution among soil aggregates in subtropical plantations of China

作     者：Yanli Jing Xuechao Zhao Shengen Liu Peng Tian Zhaolin Sun Longchi Chen Qingkui Wang Yanli Jing;Xuechao Zhao;Shengen Liu;Peng Tian;Zhaolin Sun;Longchi Chen;Qingkui Wang

作者机构：Ecology Security and Protection Key Laboratory of Sichuan ProvinceMianyang Teachers’CollegeMianyang 621000China Huitong Experimental Station of Forest EcologyCAS Key Laboratory of Forest Ecology and ManagementInstitute of Applied EcologyShenyang 110016China University of Chinese Academy of SciencesBeijing 100049China College of Biological and Pharmaceutical SciencesChina Three Gorges UniversityYichang 443000China School of Forestry and Landscape ArchitectureAnhui Agricultural UniversityHefei 230036China 

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

年 卷 期：2023年第12卷第1期

页      面：450-460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(31830015,32171752 and 31901302) the Natural Science Foundation of Sichuan Province(2023NSFSC0755) the Open Fund of Ecological Security and Protection Key Laboratory of Sichuan Province,Mianyang Normal University(ESP1701) 

主　　题：Tree species PLFA Amino sugar Soil aggregate Subtropical plantation 

摘      要：Background Microbial residues are significant contributors to stable soil organic carbon(SOC).Soil aggregates effectively protect microbial residues against decomposition;thus,microbial residue accumulation and distribution among soil aggregates determine long-term SOC ***,how tree species influence accumulation and distribution of soil microbial residues remains largely unknown,hindering the chances to develop policies for SOC ***,we investigated microbial residue accumulation and distribution in soil aggregates under four subtropical tree species(Cunninghamia lanceolata,Pinus massoniana,Michelia macclurei,and Schima superba)after 29 years of *** Accumulation of microbial residues in the 0-10 cm soil layer was 13.8-26.7%higher under *** than that under the other tree species.A structural equation model revealed that tree species affected the accumulation of microbial residues directly by altering fungal ***,tree species significantly affected microbial residue distribution and contribution to SOC in the top 20 cm *** particular,microbial residue distribution was 17.2-33.4%lower in large macro-aggregates(LMA)but 60.1-140.7%higher in micro-aggregates(MA)under *** than that under the other species in the 0-10 cm soil layer,and 14.3-19.0%lower in LMA but 43-52.1%higher in MA under *** than that under *** and *** in the 10-20 cm soil ***,the contribution of microbial residues to SOC was 44.4-47.5%higher under *** than under the other tree *** findings suggest a higher stability of microbial residues under *** than that under the other studied tree *** Our results demonstrate that tree species influence long-term microbial persistence in forest soils by affecting accumulation and stabilization of microbial residues.