Reduced microbial stability in the active layer is associated with carbon loss under alpine permafrost degradation
["Wu, Ming-Hui","Chen, Sheng-Yun","Chen, Jian-Wei","Xue, Kai","Chen, Shi-Long","Wang, Xiao-Ming","Chen, Tuo","Kang, Shi-Chang","Rui, Jun-Peng","Thies, Janice E","Bardgett, Richard D","Wang, Yan-Fen"]
2021-06-22
期刊论文
(25)
Permafrost degradation may induce soil carbon (C) loss, critical for global C cycling, and be mediated by microbes. Despite larger C stored within the active layer of permafrost regions, which are more affected by warming, and the critical roles of Qinghai-Tibet Plateau in C cycling, most previous studies focused on the permafrost layer and in high-latitude areas. We demonstrate in situ that permafrost degradation alters the diversity and potentially decreases the stability of active layer microbial communities. These changes are associated with soil C loss and potentially a positive C feedback. This study provides insights into microbial-mediated mechanisms responsible for C loss within the active layer in degraded permafrost, aiding in the modeling of C emission under future scenarios.
来源平台：PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
