气候变化领域集成服务门户(CCPortal): Carbon turnover times shape topsoil carbon difference between Tibetan Plateau and Arctic tundra

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DOI	10.1016/j.scib.2021.04.019
	Carbon turnover times shape topsoil carbon difference between Tibetan Plateau and Arctic tundra
	Wu D.; Liu D.; Wang T.; Ding J.; He Y.; Ciais P.; Zhang G.; Piao S.
发表日期	2021
ISSN	20959273
起始页码	1698
结束页码	1704
卷号	66 期号:16
英文摘要	The Tibetan Plateau (TP) and Arctic permafrost constitute two large reservoirs of organic carbon, but processes which control carbon accumulation within the surface soil layer of these areas would differ due to the interplay of climate, soil and vegetation type. Here, we synthesized currently available soil carbon data to show that mean organic carbon density in the topsoil (0–10 cm) in TP grassland (3.12 ± 0.52 kg C m−2) is less than half of that in Arctic tundra (6.70 ± 1.94 kg C m−2). Such difference is primarily attributed to their difference in radiocarbon-inferred soil carbon turnover times (547 years for TP grassland versus 1609 years for Arctic tundra) rather than to their marginal difference in topsoil carbon inputs. Our findings highlight the importance of improving regional-specific soil carbon turnover and its controlling mechanisms across permafrost affected zones in ecosystem models to fully represent carbon-climate feedback. © 2021 Science China Press
关键词	Arctic tundra Carbon turnover time Net primary production Radiocarbon Soil organic carbon Tibetan Plateau
英文关键词	Climate models; Organic carbon; Permafrost; Arctic tundra; Carbon turnover time; Net primary production; Organics; Radiocarbon; Soil carbon turnover; Soil organic carbon; Tibetan Plateau; Topsoil; Turnover time; Landforms
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207608
作者单位	Sino-French Institute for Earth System Science, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China; Key Laboratory of Alpine Ecology, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100085, China; Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Department of Earth System Science, University of California, Irvine, CA 92697, United States; Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, F-91191, France
推荐引用方式 GB/T 7714	Wu D.,Liu D.,Wang T.,et al. Carbon turnover times shape topsoil carbon difference between Tibetan Plateau and Arctic tundra[J],2021,66(16).
APA	Wu D..,Liu D..,Wang T..,Ding J..,He Y..,...&Piao S..(2021).Carbon turnover times shape topsoil carbon difference between Tibetan Plateau and Arctic tundra.Science Bulletin,66(16).
MLA	Wu D.,et al."Carbon turnover times shape topsoil carbon difference between Tibetan Plateau and Arctic tundra".Science Bulletin 66.16(2021).