DOI: 10.1002/2015GL067193
论文题名: Permafrost thaw and wildfire: Equally important drivers of boreal tree cover changes in the Taiga Plains, Canada
作者: Helbig M. ; Pappas C. ; Sonnentag O.
刊名: Geophysical Research Letters
ISSN: 0094-9344
EISSN: 1944-9075
出版年: 2016
卷: 43, 期: 4 起始页码: 1598
结束页码: 1606
语种: 英语
英文关键词: boreal forest
; MODIS
; permafrost
; Taiga Plains
; tree cover
; wildfire
Scopus关键词: Fires
; Forestry
; Image reconstruction
; Radiometers
; Satellite imagery
; Thawing
; Boreal forests
; MODIS
; Taiga Plains
; Tree cover
; Wildfire
; Permafrost
英文摘要: Boreal forests cover vast areas of the permafrost zones of North America, and changes in their composition and structure can lead to pronounced impacts on the regional and global climate. We partition the variation in regional boreal tree cover changes between 2000 and 2014 across the Taiga Plains, Canada, into its main causes: permafrost thaw, wildfire disturbance, and postfire regrowth. Moderate Resolution Imaging Spectroradiometer Percent Tree Cover (PTC) data are used in combination with maps of historic fires, and permafrost and drainage characteristics. We find that permafrost thaw is equally important as fire history to explain PTC changes. At the southern margin of the permafrost zone, PTC loss due to permafrost thaw outweighs PTC gain from postfire regrowth. These findings emphasize the importance of permafrost thaw in controlling regional boreal forest changes over the last decade, which may become more pronounced with rising air temperatures and accelerated permafrost thaw. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84959199192&doi=10.1002%2f2015GL067193&partnerID=40&md5=9b824bf497b2da06dda0baa89982ead2
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10307
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Département de Géographie, Centre d'Études Nordiques, Université de Montréal, Montréal, QC, Canada
Recommended Citation:
Helbig M.,Pappas C.,Sonnentag O.. Permafrost thaw and wildfire: Equally important drivers of boreal tree cover changes in the Taiga Plains, Canada[J]. Geophysical Research Letters,2016-01-01,43(4).