DOI: 10.5194/tc-10-2517-2016
Scopus记录号: 2-s2.0-84994031829
论文题名: Scaling-up permafrost thermal measurements in western Alaska using an ecotype approach
作者: Cable W ; L ; , Romanovsky V ; E ; , Torre Jorgenson M
刊名: Cryosphere
ISSN: 19940416
出版年: 2016
卷: 10, 期: 5 起始页码: 2517
结束页码: 2532
语种: 英语
英文关键词: climate change
; decision making
; ecotype
; environmental degradation
; landscape change
; permafrost
; scale effect
; surface temperature
; temperature effect
; thawing
; vegetation cover
; Alaska
; United States
; Bryophyta
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75056
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Geophysical Institute, University of Alaska Fairbanks, Fairbanks, United States; Earth Cryosphere Institute, 86 Malygina Street, Tyumen, Russian Federation; Alaska Ecoscience, Fairbanks, United States
Recommended Citation:
Cable W,L,, Romanovsky V,et al. Scaling-up permafrost thermal measurements in western Alaska using an ecotype approach[J]. Cryosphere,2016-01-01,10(5)