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Global synthesis of temperature sensitivity of soil organic carbon decomposition: Latitudinal patterns and mechanisms

文献类型：期刊论文

作者Wang, Qingkui1,2; Zhao, Xuechao1,3; Chen, Longchi1,2; Yang, Qingpeng1,2; Chen, Shi1,3; Zhang, Weidong1,2
刊名FUNCTIONAL ECOLOGY
出版日期2019-03-01
卷号33期号:3页码:514-523
关键词carbon quality-temperature hypothesis global warming labile soil organic carbon recalcitrant soil organic carbon soil organic carbon decomposition temperature sensitivity
ISSN号0269-8463
DOI10.1111/1365-2435.13256
通讯作者Wang, Qingkui(qwang@iae.ac.cn) ; Zhang, Weidong(wdzhang@iae.ac.cn)
英文摘要The response of soil organic carbon (SOC) decomposition to global warming is a potentially major source of uncertainty in climate prediction. However, the magnitude and direction of SOC cycle feedbacks under climate warming remain uncertain because of the knowledge gap about the global-scale spatial pattern and temperature sensitivity (Q(10)) mechanism of SOC decomposition. Here, we collected data of Q(10) and corresponding soil variables from 81 peer-reviewed papers using laboratory incubation to explore how Q(10) varied among different ecosystems at the global scale and whether labile and recalcitrant SOC pools had equal Q(10) values. Q(10) with a global average of 2.41 substantially varied among different ecosystems, ranging from the highest in cropland soils (2.76) and the lowest in wetland soils (1.84). Hump-shaped correlations of Q(10) values with the maximum at SOC = 190 g/kg and the minimum at clay = 37% were observed. However, the main influencing factors of Q(10) differed among various ecosystems. Q(10) values showed a clear decrease with increasing incubation temperature but no significant decrease above 25 degrees C. In general, labile SOC was less sensitive than recalcitrant SOC to warming. Structural equation model analyses showed that total N and SOC accounted for 53% and 46%, respectively, of the variation in Q(10) of labile SOC and recalcitrant SOC. This finding suggested that Q(10) values of labile and recalcitrant SOC pools had different controlling factors. Our findings highlighted the importance of Q(10)'s variations in ecosystem types and the response of recalcitrant SOC to warming in predicting the soil C cycling and its feedback to climate change. Therefore, ecosystem type and difference in Q(10) of labile and recalcitrant SOC should be considered to precisely predict the soil C dynamics under global warming. A is available for this article.
资助项目National Natural Science Foundation of China[31830015] ; National Natural Science Foundation of China[31570466] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB15010301] ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences[QYZDB-SSW-DQC002]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000460189400013
出版者WILEY
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences of the Chinese Academy of Sciences
源URL[http://ir.imr.ac.cn/handle/321006/132185]  
专题金属研究所_中国科学院金属研究所
通讯作者Wang, Qingkui; Zhang, Weidong
作者单位1.Inst Appl Ecol, CAS Key Lab Forest Ecol & Management, Shenyang, Liaoning, Peoples R China
2.Chinese Acad Sci, Huitong Expt Stn Forest Ecol, Huitong, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Qingkui,Zhao, Xuechao,Chen, Longchi,et al. Global synthesis of temperature sensitivity of soil organic carbon decomposition: Latitudinal patterns and mechanisms[J]. FUNCTIONAL ECOLOGY,2019,33(3):514-523.
APA Wang, Qingkui,Zhao, Xuechao,Chen, Longchi,Yang, Qingpeng,Chen, Shi,&Zhang, Weidong.(2019).Global synthesis of temperature sensitivity of soil organic carbon decomposition: Latitudinal patterns and mechanisms.FUNCTIONAL ECOLOGY,33(3),514-523.
MLA Wang, Qingkui,et al."Global synthesis of temperature sensitivity of soil organic carbon decomposition: Latitudinal patterns and mechanisms".FUNCTIONAL ECOLOGY 33.3(2019):514-523.

入库方式： OAI收割

来源：金属研究所

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