文献类型：期刊文献

英文题名：Soil Water Content Shapes Microbial Community Along Gradients of Wetland Degradation on the Tibetan Plateau

作者：Li, Meng[1,2,3] Zhang, Kerou[1,2,3] Yan, Zhongqing[1,2,3] Liu, Liang[4,5] Kang, Enze[1,2,3] Kang, Xiaoming[1,2,3]

第一作者：李猛;Li, Meng

通信作者：Kang, XM[1];Kang, XM[2];Kang, XM[3]

机构：[1]Chinese Acad Forestry, Inst Wetland Res, Beijing, Peoples R China;[2]Beijing Key Lab Wetland Serv & Restorat, Beijing, Peoples R China;[3]Tibetan Autonomous Prefecture Aba, Sichuan Zoige Wetland Ecosyst Res Stn, Ngawa, Sichuan, Peoples R China;[4]Natl Disaster Reduct Ctr China, Minist Emergency Management, Beijing, Peoples R China;[5]Satellite Applicat Ctr Disaster Reduct, Minist Emergency Management, Beijing, Peoples R China

年份：2022

卷号：13

外文期刊名：FRONTIERS IN MICROBIOLOGY

收录：;Scopus(收录号：2-s2.0-85124773101);WOS:【SCI-EXPANDED(收录号:WOS:000759469500001)】；

基金：Funding This work was funded by the National Non-profit Institute Research Grant of CAF (Grant No. CAFYBB2020MA006), the National Natural Science Foundation of China (Grant No. 42041005), and the Second Tibetan Plateau Scientific Expedition and Research Program (STEP) (Grant No. 2019 QZKK0304).

语种：英文

外文关键词：alpine wetland; ecosystem degradation; microbial networks; soil physicochemical properties; 16S rRNA sequencing; microbial community composition

摘要：Soil microbes are important components in element cycling and nutrient supply for the development of alpine ecosystems. However, the development of microbial community compositions and networks in the context of alpine wetland degradation is unclear. We applied high-throughput 16S rRNA gene amplicon sequencing to track changes in microbial communities along degradation gradients from typical alpine wetland (W), to wet meadow (WM), to typical meadow (M), to grassland (G), and to desert (D) in the Zoige alpine wetland region on the Tibetan Plateau. Soil water content (SWC) decreased as wetland degradation progressed (79.4 and 9.3% in W and D soils, respectively). Total organic carbon (TOC), total nitrogen (TN), and total phosphorus (TP) increased in the soils of WM, and then decreased with alpine wetlands degradation from WM to the soils of M, G, and D, respectively. Wetland degradation did not affect microbial community richness and diversity from W soils to WM, M, and G soils, but did affect richness and diversity in D soils. Microbial community structure was strongly affected by wetland degradation, mainly due to changes in SWC, TOC, TN, and TP. SWC was the primary soil physicochemical property influencing microbial community compositions and networks. In wetland degradation areas, Actinobacteriota, Acidobacteriota, Cholorflexi, and Proteovacteria closely interacted in the microbial network. Compared to soils of W, WM, and M, Actinobacteriota played an important role in the microbial co-occurrence network of the G and D soils. This research contributes to our understanding of how microbial community composition and networks change with varied soil properties during degradation of different alpine wetlands.