气候变化领域集成服务门户(CCPortal): Thermokarst lake changes along the Qinghai-Tibet Highway during 1991-2020

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DOI	10.1016/j.geomorph.2023.108895
	Thermokarst lake changes along the Qinghai-Tibet Highway during 1991-2020
	Mu, Mei; Mu, Cuicui; Lei, Pengsi; Mo, Xiaoxiao; Qiao, Yuan; Chen, Xu; Liu, Hebin
发表日期	2023
ISSN	0169-555X
EISSN	1872-695X
卷号	441
英文摘要	Thermokarst lake development significantly affects hydrologic systems, infrastructure stability and biogeo-chemical processes, while the spatial and temporal changes in thermokarst lakes remain largely unknown. Here, we created a thermokarst lake dataset on the Qinghai-Tibet Plateau (QTP) using a threshold-based mapping method based on Google Earth Engine (GEE) data associated with visual inspection. The dataset includes a thermokarst lake inventory on the QTP at a 10 m resolution produced from Sentinel-2A images and a multi-temporal inventory along the Qinghai-Tibet Highway (QTH) from Landsat and Sentinel-2A images. We analyzed the temporal and spatial changes in thermokarst lake area and their relationships to environmental factors. Our results showed that thermokarst lakes on the QTP permafrost region covered a total area of 1572 +/- 184 km(2), with most of the thermokarst lakes <10,000 m(2) in area. The spatial distributions of thermokarst lakes are affected by the ground thermal stability, active layer thickness, vegetation type, and ground ice content. Over the past 30 years, the number and surface area of thermokarst lakes along the QTH have increased by 58.8 % and 83.1 %, respectively, with the increase in lakes likely caused by climate warming and precipitation increasing. This study provides deep insight in the long-term interannual variations and its driving factors in thermokarst lakes along the QTH.
关键词	Climate warming Permafrost degradation Thermokarst lake Qinghai-Tibet Plateau
英文关键词	PERMAFROST THERMAL STATE; SURFACE-WATER; RIVER-BASIN; PLATEAU; CLIMATE; LANDSAT; CHINA; MAP; LANDSCAPE; DRAINAGE
WOS研究方向	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:001076973400001
来源期刊	GEOMORPHOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282599
作者单位	Lanzhou University; Qinghai Normal University; Southern Marine Science & Engineering Guangdong Laboratory
推荐引用方式 GB/T 7714	Mu, Mei,Mu, Cuicui,Lei, Pengsi,et al. Thermokarst lake changes along the Qinghai-Tibet Highway during 1991-2020[J],2023,441.
APA	Mu, Mei.,Mu, Cuicui.,Lei, Pengsi.,Mo, Xiaoxiao.,Qiao, Yuan.,...&Liu, Hebin.(2023).Thermokarst lake changes along the Qinghai-Tibet Highway during 1991-2020.GEOMORPHOLOGY,441.
MLA	Mu, Mei,et al."Thermokarst lake changes along the Qinghai-Tibet Highway during 1991-2020".GEOMORPHOLOGY 441(2023).