文献类型：期刊文献

英文题名：Long-term degradation from marshes into meadows shifts microbial functional diversity of soil phosphorus cycling in an alpine wetland of the Tibetan Plateau

作者：Li, Meng[1,2,3] Hao, Yanbin[4] Yan, Zhongqing[1,2,3] Kang, Enze[1,2,3] Wang, Jinzhi[1,2,3] Zhang, Kerou[1,2,3] Li, Yong[1,2,3] Wu, Haidong[1,2,3,5] Kang, Xiaoming[1,2,3]

第一作者：Li, Meng;李猛

通信作者：Kang, XM[1]

机构：[1]Chinese Acad Forestry, Inst Wetland Res, Beijing 100091, Peoples R China;[2]Beijing Key Lab Wetland Serv & Restorat, Beijing, Peoples R China;[3]Sichuan Zoige Wetland Ecosyst Res Stn, Tibetan Autonomous Prefe, Peoples R China;[4]Univ Chinese Acad Sci, Coll Life Sci, Beijing, Peoples R China;[5]Minist Ecol & Environm, Informat Ctr, Beijing, Peoples R China

年份：2022

卷号：33

期号：4

起止页码：628-637

外文期刊名：LAND DEGRADATION & DEVELOPMENT

收录：;EI(收录号：20220311469818);Scopus(收录号：2-s2.0-85122747278);WOS:【SCI-EXPANDED(收录号:WOS:000742076100001)】；

基金：This work was funded by the Second Tibetan Plateau Scientific Expedition and Research Program (STEP) (Grant No. 2019QZKK0304), the National Key Research and Development Program of China (Grant No. 2016YFC0501804), and the National Nonprofit Institute Research Grant of CAF (CAFYBB2020ZA004 and CAFYBB2019SY030).

语种：英文

外文关键词：functional genes; metagenomics; phosphorus transformation; soil chemical properties; wetland degradation

摘要：Soil microbes greatly contribute to the regulating of phosphorus (P) cycling, which plays a significant role in maintaining wetland ecosystem processes and function. The microbial functional diversity of soil P cycling in response to wetland degradation, however, remains largely unknown. We used metagenomic sequencing to investigate the microbial community and genes related to soil P cycling in un-degraded marshes and meadows derived from long-term marsh degradation in the Lalu alpine wetland of the Tibetan Plateau. When the marsh degraded into meadow, organic P (OP) mineralization genes increased while genes related to P-starvation response regulation decreased. Proteobacteria (20.5-74.3%) and Actinobacteria (5.6-59.7%) were the dominant phyla in soils and were also the main contributors (39.7-84.1% in total) to soil P-cycling genes. Soil pH was the primary factor influencing the P-cycling functional genes. Soil pH negatively affected the genes related to the P-uptake and transport system and had negative effects on the genes related to P-starvation response regulation, OP mineralization, and inorganic P solubilization. These findings may deepen our understanding of the biogeochemical process of soil OP and may be beneficial for wetland management.