globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.13071
论文题名:
Decadally cycling soil carbon is more sensitive to warming than faster-cycling soil carbon
作者: Lin J.; Zhu B.; Cheng W.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期:12
起始页码: 4602
结束页码: 4612
语种: 英语
英文关键词: 13C natural abundance ; Decomposition ; Laboratory incubation ; Q10 ; Soil organic carbon ; Temperature sensitivity
Scopus关键词: carbon cycle ; decomposition ; global change ; laboratory method ; soil carbon ; soil organic matter ; surface temperature ; warming ; carbon ; soil ; agriculture ; carbon cycle ; chemistry ; China ; greenhouse effect ; soil ; theoretical model ; Agriculture ; Carbon ; Carbon Cycle ; China ; Global Warming ; Models, Theoretical ; Soil
英文摘要: The response of soil organic carbon (SOC) pools to globally rising surface temperature crucially determines the feedback between climate change and the global carbon cycle. However, there is a lack of studies investigating the temperature sensitivity of decomposition for decadally cycling SOC which is the main component of total soil carbon stock and the most relevant to global change. We tackled this issue using two decadally 13C-labeled soils and a much improved measuring system in a long-term incubation experiment. Results indicated that the temperature sensitivity of decomposition for decadally cycling SOC (>23 years in one soil and >55 years in the other soil) was significantly greater than that for faster-cycling SOC (<23 or 55 years) or for the entire SOC stock. Moreover, decadally cycling SOC contributed substantially (35-59%) to the total CO2 loss during the 360-day incubation. Overall, these results indicate that the decomposition of decadally cycling SOC is highly sensitive to temperature change, which will likely make this large SOC stock vulnerable to loss by global warming in the 21st century and beyond. © 2015 John Wiley & Sons Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61719
Appears in Collections:影响、适应和脆弱性

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作者单位: State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China; Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges University, Wanzhou, China; University of Chinese Academy of Sciences, Beijing, China; Department of Ecology, College of Urban, Envrn. Sciences, Key Lab. for Earth Surface Proc. of the Ministry of Education, Peking University, Beijing, China; Environmental Studies Department, University of California, Santa Cruz, CA, United States

Recommended Citation:
Lin J.,Zhu B.,Cheng W.. Decadally cycling soil carbon is more sensitive to warming than faster-cycling soil carbon[J]. Global Change Biology,2015-01-01,21(12)
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