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

doi:10.1126/sciadv.aau1218

	Temperature sensitivity of SOM decomposition governed by aggregate protection and microbial communities
	Qin, Shuqi 1; Chen, Leiyi ; Fang, Kai 1; Zhang, Qiwen 1; Wang, Jun 1; Liu, Futing 1; Yu, Jianchun 1; Yang, Yuanhe1
	2019
发表期刊	SCIENCE ADVANCES
ISSN	2375-2548
卷号	5 期号:7
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.
学科领域	Multidisciplinary Sciences
DOI	10.1126/sciadv.aau1218
收录类别	SCI
语种	英语
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
WOS记录号	WOS:000478770400004
出版者	AMER ASSOC ADVANCEMENT SCIENCE
文献子类	Article
出版地	WASHINGTON
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
作者邮箱	yhyang@ibcas.ac.cn
作品OA属性	Green Published, gold
引用统计	被引频次：155[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	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.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, 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).

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