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	Influence of microtopography on active layer thaw depths in Qilian Mountain, northeastern Tibetan Plateau
	Gao, Tanguang1,2; Zhang, Tingjun2; Wan, Xudong2; Kang, Shichang1,3; Sillanpaa, Mika4; Zheng, Yanmei5; Cao, Lin2
刊名	ENVIRONMENTAL EARTH SCIENCES
	2016-03-01
卷号	75期号:5页码:12
关键词	Active layer thickness Mountain permafrost Microtopography Tibetan plateau
ISSN号	1866-6280
DOI	10.1007/s12665-015-5196-7
通讯作者	Gao, Tanguang(gaotanguang@163.com)
英文摘要	Climate warming over the Tibetan Plateau has been thickening the active layer, the most significant indicator of the permafrost system. This study evaluates the influence of microtopography on active layer thaw depth in recent years at Eboling basin of the eastern Qilian Mountain, northeastern Tibetan Plateau. Thaw depths were measured at microtopographic levels in 2012, 2013, and 2014, respectively. Watershed-scale sampling was used to estimate the influence of various morphologies on the active layer, while a second sampling scheme to examine the variations in the frost table height along six short transects. A third sampling scheme used spatial auto-correlation analysis in a regular grid at 10 x 10 m intervals. The results documented that microtopography (elevation, microrelief, surface configuration, and slope) played a pivotal role on the active layer thickness of mountainous permafrost in the study area. Active layer became thinner in depressions, which was contrary to most of Arctic sites. Spatial autocorrelation analysis elucidated that the dominant topographic factors controlled the changes of active layer thickness. These factors exerted the majority of control over the spatial variations of the active layer. The results can help researchers or engineers to roughly estimate the probable influence of micromorphology on the changes in thickness of the active layer in mountainous permafrost regions in the Tibetan Plateau.
收录类别	SCI
WOS关键词	HEIHE RIVER-BASIN ; NORTHWEST-TERRITORIES ; PERMAFROST REGIONS ; THICKNESS ; ALASKA ; CANADA ; CHINA ; VARIABILITY ; CLIMATE ; INDEXES
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000372171700022
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557376
专题	寒区旱区环境与工程研究所
通讯作者	Gao, Tanguang
作者单位	1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 2.Lanzhou Univ, Coll Earth Environm Sci, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 4.Lappeenranta Univ Technol, Lab Green Chem, Sammonkatu 12, Mikkeli 50130, Finland 5.Henan Polytech Univ, Coll Comp Sci & Technol, Jiaozuo 454000, Henan, Peoples R China
推荐引用方式 GB/T 7714	Gao, Tanguang,Zhang, Tingjun,Wan, Xudong,et al. Influence of microtopography on active layer thaw depths in Qilian Mountain, northeastern Tibetan Plateau[J]. ENVIRONMENTAL EARTH SCIENCES,2016,75(5):12.
APA	Gao, Tanguang.,Zhang, Tingjun.,Wan, Xudong.,Kang, Shichang.,Sillanpaa, Mika.,...&Cao, Lin.(2016).Influence of microtopography on active layer thaw depths in Qilian Mountain, northeastern Tibetan Plateau.ENVIRONMENTAL EARTH SCIENCES,75(5),12.
MLA	Gao, Tanguang,et al."Influence of microtopography on active layer thaw depths in Qilian Mountain, northeastern Tibetan Plateau".ENVIRONMENTAL EARTH SCIENCES 75.5(2016):12.

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