气候变化领域集成服务门户(CCPortal): Recent peat and carbon accumulation following the Little Ice Age in northwestern Québec, Canada

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DOI	10.1088/1748-9326/ab11ec
	Recent peat and carbon accumulation following the Little Ice Age in northwestern Québec, Canada
	Piilo S.R.; Zhang H.; Garneau M.; Gallego-Sala A.; Amesbury M.J.; Väliranta M.M.
发表日期	2019
ISSN	17489318
卷号	14 期号:7
英文摘要	Peatland ecosystems are important carbon sinks, but also release carbon back to the atmosphere as carbon dioxide and methane. Peatlands therefore play an essential role in the global carbon cycle. However, the response of high-latitude peatlands to ongoing climate change is still not fully understood. In this study, we used plant macrofossils and peat property analyses as proxies to document changes in vegetation and peat and carbon accumulation after the Little Ice Age. Results from 12 peat monoliths collected in high-boreal and low-subarctic regions in northwestern Québec, Canada, suggest high carbon accumulation rates for the recent past (post AD 1970s). Successional changes in plant assemblages were asynchronous within the cores in the southernmost region, but more consistent in the northern region. Average apparent recent carbon accumulation rates varied between 50.7 and 149.1 g C m-2 yr-1 with the northernmost study region showing higher values. The variation in vegetation records and peat properties found within samples taken from the same sites and amongst cores taken from different regions highlights the need to investigate multiple records from each peatland, but also from different peatlands within one region. © 2019 The Author(s). Published by IOP Publishing Ltd.
英文关键词	carbon accumulation; climate warming; Permafrost peatlands; plant macrofossil analysis; vegetation dynamics
语种	英语
scopus关键词	Carbon dioxide; Climate change; Glacial geology; Peat; Vegetation; Carbon accumulation; Climate warming; Peat land; plant macrofossil analysis; Vegetation dynamics; Wetlands
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154532
作者单位	ECRU, Ecosystems and Environment Research Programme, Department of Environmental Sciences, University of Helsinki, PO Box 65FI-00014, Finland; Helsinki Institute of Sustainability Science (HELSUS), Finland; Department of Geography, Université du Québec À Montréal, Canada; Department of Geography, College of Life and Environmental Sciences, University of Exeter, United Kingdom
推荐引用方式 GB/T 7714	Piilo S.R.,Zhang H.,Garneau M.,et al. Recent peat and carbon accumulation following the Little Ice Age in northwestern Québec, Canada[J],2019,14(7).
APA	Piilo S.R.,Zhang H.,Garneau M.,Gallego-Sala A.,Amesbury M.J.,&Väliranta M.M..(2019).Recent peat and carbon accumulation following the Little Ice Age in northwestern Québec, Canada.Environmental Research Letters,14(7).
MLA	Piilo S.R.,et al."Recent peat and carbon accumulation following the Little Ice Age in northwestern Québec, Canada".Environmental Research Letters 14.7(2019).