气候变化领域集成服务门户(CCPortal): Rapid early development of circumarctic peatlands and atmospheric CH 4 and CO2 variations

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DOI	10.1126/science.1131722
	Rapid early development of circumarctic peatlands and atmospheric CH 4 and CO2 variations
	MacDonald G.M.; Beilman D.W.; Kremenetski K.V.; Sheng Y.; Smith L.C.; Velichko A.A.
发表日期	2006
ISSN	0036-8075
起始页码	285
结束页码	288
卷号	314 期号:5797
英文摘要	An analysis of 1516 radiocarbon dates demonstrates that the development of the current circumarctic peatlands began ∼16.5 thousand years ago (ka) and expanded explosively between 12 and 8 ka in concert with high summer insolation and increasing temperatures. Their rapid development contributed to the sustained peak in CH4 and modest decline of CO2 during the early Holocene and likely contributed to CH4 and CO2 fluctuations during earlier interglacial and interstadial transitions. Given the decreased tempo of peatland initiation in the late Holocene and the transition of many from fens (which generated high levels of CH4) to ombrotrophic bogs, a neoglacial expansion of northern peatlands cannot explain the increase in atmospheric CH4 that occurred after 6 ka.
英文关键词	Circumarctic peatlands; Ombrotrophic bogs; Radiocarbon dates; Methane; Thermal effects; Carbon dioxide; carbon 14; carbon dioxide; methane; analytical method; atmospheric gas; carbon dioxide; methane; Neoglacial; peatland; radiocarbon dating; air temperature; article; development; geographic distribution; heat stroke; high temperature; Holocene; latitude; peatland; priority journal; summer; wetland
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244607
作者单位	Department of Geography, University of California, Los Angeles, CA 90095-1524, United States; Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095-1524, United States; Russian Academy of Sciences, Moscow 109017, Russian Federation
推荐引用方式 GB/T 7714	MacDonald G.M.,Beilman D.W.,Kremenetski K.V.,et al. Rapid early development of circumarctic peatlands and atmospheric CH 4 and CO2 variations[J],2006,314(5797).
APA	MacDonald G.M.,Beilman D.W.,Kremenetski K.V.,Sheng Y.,Smith L.C.,&Velichko A.A..(2006).Rapid early development of circumarctic peatlands and atmospheric CH 4 and CO2 variations.Science,314(5797).
MLA	MacDonald G.M.,et al."Rapid early development of circumarctic peatlands and atmospheric CH 4 and CO2 variations".Science 314.5797(2006).