Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15487 |
Large‐scale evidence for microbial response and associated carbon release after permafrost thaw | |
Yongliang Chen; Futing Liu; Luyao Kang; Dianye Zhang; Dan Kou; Chao Mao; Shuqi Qin; Qiwen Zhang; Yuanhe Yang | |
2021-01-21 | |
发表期刊 | Global Change Biology |
出版年 | 2021 |
英文摘要 | Permafrost thaw could trigger the release of greenhouse gases through microbial decomposition of the large quantities of carbon (C) stored within frozen soils. However, accurate evaluation of soil C emissions from thawing permafrost is still a big challenge, partly due to our inadequate understanding about the response of microbial communities and their linkage with soil C release upon permafrost thaw. Based on a large‐scale permafrost sampling across 24 sites on the Tibetan Plateau, we employed meta‐genomic technologies (GeoChip and Illumina MiSeq sequencing) to explore the impacts of permafrost thaw (permafrost samples were incubated for 11 days at 5°C) on microbial taxonomic and functional communities, and then conducted a laboratory incubation to investigate the linkage of microbial taxonomic and functional diversity with soil C release after permafrost thaw. We found that bacterial and fungal α diversity decreased, but functional gene diversity and the normalized relative abundance of C degradation genes increased after permafrost thaw, reflecting the rapid microbial response to permafrost thaw. Moreover, both the microbial taxonomic and functional community structures differed between the thawed permafrost and formerly frozen soils. Furthermore, soil C release rate over five month incubation was associated with microbial functional diversity and C degradation gene abundances. By contrast, neither microbial taxonomic diversity nor community structure exhibited any significant effects on soil C release over the incubation period. These findings demonstrate that permafrost thaw could accelerate C emissions by altering the function potentials of microbial communities rather than taxonomic diversity, highlighting the crucial role of microbial functional genes in mediating the responses of permafrost C cycle to climate warming. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/313734 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Yongliang Chen,Futing Liu,Luyao Kang,等. Large‐scale evidence for microbial response and associated carbon release after permafrost thaw[J]. Global Change Biology,2021. |
APA | Yongliang Chen.,Futing Liu.,Luyao Kang.,Dianye Zhang.,Dan Kou.,...&Yuanhe Yang.(2021).Large‐scale evidence for microbial response and associated carbon release after permafrost thaw.Global Change Biology. |
MLA | Yongliang Chen,et al."Large‐scale evidence for microbial response and associated carbon release after permafrost thaw".Global Change Biology (2021). |
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