气候变化领域集成服务门户(CCPortal): Scaling-up permafrost thermal measurements in western Alaska using an ecotype approach

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DOI	10.5194/tc-10-2517-2016
	Scaling-up permafrost thermal measurements in western Alaska using an ecotype approach
	Cable W.L.; Romanovsky V.E.; Torre Jorgenson M.
发表日期	2016
ISSN	19940416
卷号	10 期号:5
英文摘要	Permafrost temperatures are increasing in Alaska due to climate change and in some cases permafrost is thawing and degrading. In areas where degradation has already occurred the effects can be dramatic, resulting in changing ecosystems, carbon release, and damage to infrastructure. However, in many areas we lack baseline data, such as subsurface temperatures, needed to assess future changes and potential risk areas. Besides climate, the physical properties of the vegetation cover and subsurface material have a major influence on the thermal state of permafrost. These properties are often directly related to the type of ecosystem overlaying permafrost. In this paper we demonstrate that classifying the landscape into general ecotypes is an effective way to scale up permafrost thermal data collected from field monitoring sites. Additionally, we find that within some ecotypes the absence of a moss layer is indicative of the absence of near-surface permafrost. As a proof of concept, we used the ground temperature data collected from the field sites to recode an ecotype land cover map into a map of mean annual ground temperature ranges at 1m depth based on analysis and clustering of observed thermal regimes. The map should be useful for decision making with respect to land use and understanding how the landscape might change under future climate scenarios. © Author(s) 2016.
学科领域	climate change; decision making; ecotype; environmental degradation; landscape change; permafrost; scale effect; surface temperature; temperature effect; thawing; vegetation cover; Alaska; United States; Bryophyta
语种	英语
scopus关键词	climate change; decision making; ecotype; environmental degradation; landscape change; permafrost; scale effect; surface temperature; temperature effect; thawing; vegetation cover; Alaska; United States; Bryophyta
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119559
作者单位	Geophysical Institute, University of Alaska Fairbanks, Fairbanks, 99775, United States; Earth Cryosphere Institute, 86 Malygina Street, Tyumen, 625000, Russian Federation; Alaska Ecoscience, Fairbanks, 99709, United States
推荐引用方式 GB/T 7714	Cable W.L.,Romanovsky V.E.,Torre Jorgenson M.. Scaling-up permafrost thermal measurements in western Alaska using an ecotype approach[J],2016,10(5).
APA	Cable W.L.,Romanovsky V.E.,&Torre Jorgenson M..(2016).Scaling-up permafrost thermal measurements in western Alaska using an ecotype approach.Cryosphere,10(5).
MLA	Cable W.L.,et al."Scaling-up permafrost thermal measurements in western Alaska using an ecotype approach".Cryosphere 10.5(2016).