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Temperature sensitivity of SOM decomposition governed by aggregate protection and microbial communities

文献类型：期刊论文

作者Qin, Shuqi2; Chen, Leiyi; Fang, Kai2; Zhang, Qiwen2; Wang, Jun2; Liu, Futing2; Yu, Jianchun2; Yang, Yuanhe2
刊名SCIENCE ADVANCES
出版日期2019
卷号5期号:7
ISSN号2375-2548
DOI10.1126/sciadv.aau1218
文献子类Article
英文摘要Temperature sensitivity (Q(10)) of soil organic matter (SOM) decomposition is a crucial parameter for predicting the fate of soil carbon (C) under global warming. However, our understanding of its regulatory mechanisms remains inadequate, which constrains its accurate parameterization in Earth system models and induces large uncertainties in predicting terrestrial C-climate feedback. Here, we conducted a long-term laboratory incubation combined with a two-pool model and manipulative experiments to examine potential mechanisms underlying the depth-associated Q(10) variations in active and slow soil C pools. We found that lower microbial abundance and stronger aggregate protection were coexisting mechanisms underlying the lower Q(10) in the subsoil. Of them, microbial communities were the main determinant of Q(10) in the active pool, whereas aggregate protection exerted more important control in the slow pool. These results highlight the crucial role of soil C stabilization mechanisms in regulating temperature response of SOM decomposition, potentially attenuating the terrestrial C-climate feedback.
学科主题Multidisciplinary Sciences
出版地WASHINGTON
WOS关键词SOIL ORGANIC-MATTER ; CARBON DECOMPOSITION ; CLIMATE ; CO2 ; MINERALIZATION ; TURNOVER ; RATES ; FRACTIONS ; FEEDBACKS ; IMPACTS
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000478770400004
出版者AMER ASSOC ADVANCEMENT SCIENCE
资助机构Strategic Priority Research Program of the Chinese Academy of SciencesChinese Academy of Sciences [XDA19070303] ; National Key R&D Program of China [2017YFC0503903] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31770557, 31825006] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences [QYZDB-SSW-SMC049] ; Chinese Academy of Sciences-Peking University Pioneer Cooperation Team
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/19785]  
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
推荐引用方式
GB/T 7714		 Qin, Shuqi,Chen, Leiyi,Fang, Kai,et al. Temperature sensitivity of SOM decomposition governed by aggregate protection and microbial communities[J]. SCIENCE ADVANCES,2019,5(7).
APA Qin, Shuqi.,Chen, Leiyi.,Fang, Kai.,Zhang, Qiwen.,Wang, Jun.,...&Yang, Yuanhe.(2019).Temperature sensitivity of SOM decomposition governed by aggregate protection and microbial communities.SCIENCE ADVANCES,5(7).
MLA Qin, Shuqi,et al."Temperature sensitivity of SOM decomposition governed by aggregate protection and microbial communities".SCIENCE ADVANCES 5.7(2019).

入库方式： OAI收割

来源：植物研究所

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