Variations of soil bacterial community structure and function under different habitats of Tamarix ramosissima Ledeb. in the upper reaches of the Tarim River, Northwest China  

作　　者：YANG Qianqian WU Xue Bota BAHETHAN TIAN Cuiping YANG Xianyao WANG Xiantao 

机构地区：[1]College of Ecology and Environment,Xinjiang University,Urumqi 830046,China [2]Key Laboratory of Oasis Ecology,Ministry of Education,Xinjiang University,Urumqi 830046,China [3]Xinjiang Jinghe Observation and Research Station of Temperate Desert Ecosystem,Ministry of Education,Jinghe 833300,China [4]Technology Innovation Center for Ecological Monitoring and Restoration of Desert-Oasis,Ministry of Natural Resources(MNR),Urumqi 830046,China

出　　处：《Journal of Arid Land》2025年第4期560-574,共15页干旱区科学(英文版)

基　　金：supported by the Sciences Foundation of Xinjiang Uygur Autonomous Region(2024D01C32);the Xinjiang Uygur Autonomous Region Education Department Basic Scientific Project(XJEDU2023P005);the National Natural Science Foundation of China(32001145);the 2024 Xinjiang Uygur Autonomous Region Postdoctoral Funding Project.

摘　　要：Diversity of soil microorganisms in different habitats of arid and semi-arid areas plays an important role in the soil texture and nutrient,promoting the growth of vegetation in those areas.To clarify the response of soil bacterial community diversity to the changes of environmental factors in different habitats,this study collected soil samples under the canopies of Tamarix ramosissima Ledeb.in oasis,transition zone,and desert habitats in the upper reaches of the Tarim River,Northwest China.High-throughput sequencing technology and PICRUSt2 software were used to explore the composition and function of soil bacterial communities in different habitats of T.ramosissima.The results showed that:(1)soil environmental factors under the canopy of T.ramosissima in the three habitats differed significantly,with soil moisture and nutrient conditions being better in the oasis;(2)Proteobacteria,Bacteroidetes,Firmicutes,Actinobacteria,and Gemmatimonadetes were the major bacterial communities in the three habitats;(3)soil bacterial community composition under the canopy of T.ramosissima varied greatly,and the richness was significantly different among the three habitats;(4)redundancy analysis indicated that soil water content and available phosphorous were the most important environmental factors influencing the composition of soil bacterial community;and(5)6 primary functions and 21 secondary functions were obtained by PICRUSt2 function prediction,with metabolism being the most dominant function.This study revealed the response of soil bacterial community composition to habitat changes and their driving factors in the upper reaches of the Tarim River,which could improve the understanding of ecological sensitivity of soil microorganisms in arid and semi-arid areas,and provide a theoretical foundation for improving soil quality and ecological protection.

关 键 词：high-throughput sequencing soil bacterial community environmental factors function prediction soil nutrients 

分 类 号：S154.3[农业科学—土壤学]