Divergent Trajectory of Soil Autotrophic and Heterotrophic Respiration upon Permafrost Thaw
文献类型：期刊论文
| 作者 | Wang, Guanqin2; Chen, Leiyi; Zhang, Dianye; Qin, Shuqi2; Peng, Yunfeng; Yang, Guibiao; Wang, Jun2; Yu, Jianchun2; Wei, Bin2; Liu, Yang1 |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2022 |
| 关键词 | carbon cycle carbon-climate feedback permafrost ecosystem soil respiration thermokarst Tibetan Plateau |
| ISSN号 | 0013-936X |
| DOI | 10.1021/acs.est.1c07575 |
| 文献子类 | Article; Early Access |
| 英文摘要 | Warming-induced permafrost thaw may stimulate soil respiration (Rs) and thus cause a positive feedback to climate warming. However, due to the limited in situ observations, it remains unclear about how Rs and its autotrophic (Ra) and heterotrophic (Rh) components change upon permafrost thaw. Here we monitored variations in Rs and its components along a permafrost thaw sequence on the Tibetan Plateau, and explored the potential linkage of Rs components (i.e., Ra and Rh) with biotic (e.g., plant functional traits and soil microbial diversity) and abiotic factors (e.g., substrate quality). We found that Ra and Rh exhibited divergent responses to permafrost collapse: Ra increased with the time of thawing, while Rh exhibited a hump-shaped pattern along the thaw sequence. We also observed different drivers of thaw-induced changes in the ratios of Ra:Rs and Rh:Rs. Except for soil water status, plant community structure, diversity, and root properties explained the variation in Ra:Rs ratio, soil substrate quality and microbial diversity were key factors associated with the dynamics of Rh:Rs ratio. Overall, these findings demonstrate divergent patterns and drivers of Rs components as permafrost thaw prolongs, which call for considerations in Earth system models for better forecasting permafrost carbon-climate feedback. |
| 学科主题 | Engineering, Environmental ; Environmental Sciences |
| 出版地 | WASHINGTON |
| 电子版国际标准刊号 | 1520-5851 |
| WOS关键词 | SPECIES RICHNESS ; TIBETAN PLATEAU ; ORGANIC-MATTER ; CARBON STORAGE ; CLIMATE-CHANGE ; DIVERSITY ; BIOMASS ; DEGRADATION ; MECHANISMS ; GRASSLANDS |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000818695500001 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | National Natural Science Foundation of China [31988102, 31825006, 91837312] ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program [2019QZKK0106, 2019QZKK0302] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/28972]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 3.Agr Univ Hebei, Coll Resources & Environm Sci, Hebei Prov Key Lab Farmland Ecoenvironm, Baoding 071000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Guanqin,Chen, Leiyi,Zhang, Dianye,et al. Divergent Trajectory of Soil Autotrophic and Heterotrophic Respiration upon Permafrost Thaw[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2022. |
| APA | Wang, Guanqin.,Chen, Leiyi.,Zhang, Dianye.,Qin, Shuqi.,Peng, Yunfeng.,...&Yang, Yuanhe.(2022).Divergent Trajectory of Soil Autotrophic and Heterotrophic Respiration upon Permafrost Thaw.ENVIRONMENTAL SCIENCE & TECHNOLOGY. |
| MLA | Wang, Guanqin,et al."Divergent Trajectory of Soil Autotrophic and Heterotrophic Respiration upon Permafrost Thaw".ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022). |
入库方式： OAI收割
来源：植物研究所
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