文献类型：期刊文献

英文题名：Relative roles of competition, environmental selection and spatial processes in structuring soil bacterial communities in the Qinghai-Tibetan Plateau

作者：Zhou, Jinxing[1,8] Yang, Haishui[2] Tang, Fukai[3] Koide, Roger T.[4] Cui, Ming[5] Liu, Yuguo[5] Sun, Qixiang[6] Insam, Heribert[7] Zhang, Qian[1,6,7]

第一作者：Zhou, Jinxing

通信作者：Zhang, Q[1];Zhang, Q[2]

机构：[1]Beijing Forestry Univ, Sch Soil & Water Conservat, Jianshui Natl Fetid Stn, Beijing 100083, Peoples R China;[2]Nanjing Agr Univ, Coll Agr, Nanjing 210095, Jiangsu, Peoples R China;[3]Minist Environm Protect China, Nanjing Inst Environm Sci, Nanjing 210042, Jiangsu, Peoples R China;[4]Brigham Young Univ, Dept Biol, Provo, UT 84602 USA;[5]Chinese Acad Forestry, Inst Desertificat Studies, Beijing 100091, Peoples R China;[6]Chinese Acad Forestry, Res Inst Forestry, 1 Dongxiaofu,Xiangshan Rd, Beijing 100091, Peoples R China;[7]Univ Innsbruck, Inst Microbiol, Technikerstr 25d, A-6020 Innsbruck, Austria;[8]Beijing Forestry Univ, Key Lab State Forestry Adm Soil & Water Conservat, Beijing 100083, Peoples R China

年份：2017

卷号：117

起止页码：223-232

外文期刊名：APPLIED SOIL ECOLOGY

收录：;Scopus(收录号：2-s2.0-85019972947);WOS:【SCI-EXPANDED(收录号:WOS:000404321300027)】；

基金：We are grateful to Dr. Yunfeng Yang (Tsinghua University) for providing helpful comments on the manuscript. Dr. Lin Yuan and Dr. Jingcheng Zhang (Beijing Academy of Agriculture and Forestry Sciences) assisted in Fig. 1. This work was funded by Special Fund for Forest Scientific Research in the Public Welfare of China (No.201504401), The National Natural Science Foundation of China (No.30870231, No.31300105). We thank the editor and referees for insightful comments that helped the improvement of this paper.

语种：英文

外文关键词：Community structuring mechanism; Competition; Environmental selection; Qinghai-Tibetan Plateau; Soil bacterial community; Spatial process

摘要：The structure and dynamics of microbial communities may be influenced by environmental selection, spatial processes and competition. However, the relative strengths of these processes need to be further elucidated. Here, with a large scale sampling along an elevational gradient of 2000 m in the Qinghai-Tibetan Plateau, we examined the interplay among the three processes, as well as their relative importance to the biogeography of bacterial communities. Variation partitioning showed that environmental selection, competition and spatial variables jointly explained 37% of the total variation among the bacterial communities. The non-spatially structured environmental variables explained more variation than spatial distance or competition. Two environmental factors, elevation and soil pH, were shown to be the main cues determining soil bacterial communities. Environmental variables and spatial distance also exerted indirect effects on community variation via competition. The main conclusion of this study is consistent with the idea that "the environment selects". Competition and spatial processes were less important in shaping bacterial communities of Qinghai-Tibetan Plateau.