气候变化领域集成服务门户(CCPortal): Thawing Yedoma permafrost is a neglected nitrous oxide source

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DOI	10.1038/s41467-021-27386-2
	Thawing Yedoma permafrost is a neglected nitrous oxide source
	Marushchak M.E.; Kerttula J.; Diáková K.; Faguet A.; Gil J.; Grosse G.; Knoblauch C.; Lashchinskiy N.; Martikainen P.J.; Morgenstern A.; Nykamb M.; Ronkainen J.G.; Siljanen H.M.P.; van Delden L.; Voigt C.; Zimov N.; Zimov S.; Biasi C.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	In contrast to the well-recognized permafrost carbon (C) feedback to climate change, the fate of permafrost nitrogen (N) after thaw is poorly understood. According to mounting evidence, part of the N liberated from permafrost may be released to the atmosphere as the strong greenhouse gas (GHG) nitrous oxide (N2O). Here, we report post-thaw N2O release from late Pleistocene permafrost deposits called Yedoma, which store a substantial part of permafrost C and N and are highly vulnerable to thaw. While freshly thawed, unvegetated Yedoma in disturbed areas emit little N2O, emissions increase within few years after stabilization, drying and revegetation with grasses to high rates (548 (133–6286) μg N m−2 day−1; median with (range)), exceeding by 1–2 orders of magnitude the typical rates from permafrost-affected soils. Using targeted metagenomics of key N cycling genes, we link the increase in in situ N2O emissions with structural changes of the microbial community responsible for N cycling. Our results highlight the importance of extra N availability from thawing Yedoma permafrost, causing a positive climate feedback from the Arctic in the form of N2O emissions. © 2021, The Author(s).
语种	英语
scopus关键词	climate change; climate feedback; greenhouse gas; microbial community; nitrogen cycle; nitrous oxide; permafrost; Pleistocene; thawing; Poaceae
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250559
作者单位	Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland; Department of Soil Biogeochemistry, Bayreuth Center of Ecology and Environmental Research (BayCEER), University of Bayreuth, Bayreuth, Germany; Trofimuk Institute of Petroleum Geology and Geophysics, Novosibirsk, Russian Federation; Department of Integrative Biology, Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, MI, United States; Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Potsdam, Germany; Institute of Geosciences, University of Potsdam, Potsdam, Germany; Institute of Soil Science, Universität Hamburg, Hamburg, Germany; Center for Earth System Research and Sustainability, Universität Hamburg, Hamburg, Germany; Central Siberian Botanical Garden, Novosibirsk, Russian Federation; Department of Functional and Evolutionary Ecology, University of Vienna, Vienna, Austria; Department of Geography, University of Montreal, Montreal, QC, Canada; North-E...
推荐引用方式 GB/T 7714	Marushchak M.E.,Kerttula J.,Diáková K.,et al. Thawing Yedoma permafrost is a neglected nitrous oxide source[J],2021,12(1).
APA	Marushchak M.E..,Kerttula J..,Diáková K..,Faguet A..,Gil J..,...&Biasi C..(2021).Thawing Yedoma permafrost is a neglected nitrous oxide source.Nature Communications,12(1).
MLA	Marushchak M.E.,et al."Thawing Yedoma permafrost is a neglected nitrous oxide source".Nature Communications 12.1(2021).