文献类型：期刊文献

英文题名：Soil Bacterial Community Structure and Co-occurrence Pattern during Vegetation Restoration in Karst Rocky Desertification Area

作者：Xue, Liang[1,2] Ren, Huadong[1,2] Li, Sheng[1,2] Leng, Xiuhui[1,2] Yao, Xiaohua[1,2]

第一作者：Xue, Liang;薛亮

通信作者：Li, S[1];Li, S[2]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Fuyang, Peoples R China;[2]Observat & Res Stn Rock Desert Ecosyst, Puding, Peoples R China

年份：2017

卷号：8

期号：DEC

外文期刊名：FRONTIERS IN MICROBIOLOGY

收录：;Scopus(收录号：2-s2.0-85036507720);WOS:【SCI-EXPANDED(收录号:WOS:000416788700002)】；

基金：This work was supported by the Fundamental Research Funds for the Central Non-profit Research Institution of CAF (RISF2014007), the National Key R&D Program of China (2016YFC0502605-3), the National Natural Science Foundation of China (31470632; 31600586) and the Fundamental Research Funds for the Central Non-profit Research Institution of CAF (CAFYBB2017MA001 and CAFYBB2016QA002).

语种：英文

外文关键词：bacterial communities; co-occurrence; vegetation restoration; karst; rocky desertification

摘要：Vegetation restoration has been widely used in karst rocky desertification (KRD) areas of southwestern China, but the response of microbial community to revegetation has not been well characterized. We investigated the diversity, structure, and co-occurrence patterns of bacterial communities in soils of five vegetation types (grassland, shrubbery, secondary forest, pure plantation and mixed plantation) in KRD area using high-throughput sequencing of the 16S rRNA gene. Bray-Curtis dissimilarity analysis revealed that 15 bacterial community samples were clustered into five groups that corresponded very well to the five vegetation types. Shannon diversity was positively correlated with pH and Ca2+ content but negatively correlated with organic carbon, total nitrogen, and soil moisture. Redundancy analysis indicated that soil pH, Ca2+ content, organic carbon, total nitrogen, and soil moisture jointly influenced bacterial community structure. Co-occurrence network analysis revealed non-random assembly patterns of bacterial composition in the soils. Bryobacter, GR-WP33-30, and Rhizomicrobium were identified as keystone genera in co-occurrence network. These results indicate that diverse soil physicochemical properties and potential interactions among taxa during vegetation restoration may jointly affect the bacterial community structure in KRD regions.