气候变化领域集成服务门户(CCPortal): Variation of alpine lakes from 1986 to 2019 in the Headwater Area of the Yellow River; Tibetan Plateau using Google Earth Engine

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DOI	10.1016/j.accre.2020.05.007
	Variation of alpine lakes from 1986 to 2019 in the Headwater Area of the Yellow River; Tibetan Plateau using Google Earth Engine
	LUO D.-L.; JIN H.-J.; DU H.-Q.; LI C.; MA Q.; DUAN S.-Q.; LI G.-S.
发表日期	2020
ISSN	1674-9278
起始页码	11
结束页码	21
卷号	11 期号:1
英文摘要	To understand the variations in surface water associated with changes in air temperature, precipitation, and permafrost in the Headwater Area of the Yellow River (HAYR), we studied the dynamics of alpine lakes larger than 0.01 km2 during 1986–2019 using Google Earth Engine (GEE) platform. The surface areas of water bodies in the HAYR were processed using mass remote sensing images consisting of Landsat TM/ETM+/OLI, Sentinel-2A, and MODIS based on automatic extraction of water indices under GEE. Besides, the lake ice phenology of the Sister Lakes (the Gyaring Lake and the Ngöring Lake) was derived by threshold segmenting of water/ice area ratio. Results demonstrate that the change of surface areas experienced four stages: decreasing during 1986–2004, increasing during 2004–2012, decreasing again during 2012–2017, and increasing again during 2017–2019. Correspondingly, the number of small lakes decreased (−26.5 per year), increased (139.5 per year), again decreased (−109.0 per year), and again increased (433.0 per year). Eight lakes larger than 1 km2 disappeared in 2004 but restored afterward. The overall trends in the area of small lakes (0.01–1 km2), large lakes (>1 km2), and all lakes during 1986–2019 were 0.4, 3.1, and 3.4 km2 per year, respectively. Although the onsets of freezing, freeze-up, breaking and the break-up of the Sister Lakes varied from year to year, there is no obvious trend regarding the lake ice phenology. Tendencies of lake variations in the HAYR are primarily related to the increased net precipitation and the declined aridity, followed by the construction of hydropower station around the outlet of the Ngöring Lake, as well as permafrost degradation. © 2020 National Climate Center (China Meteorological Administration)
语种	英语
来源期刊	Advances in Climate Change Research
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/168743
作者单位	State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China; School of Civil Engineering, Northeast Forestry University, Harbin, 150040, China; Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China; Faculty of Geomatics, Lanzhou Jiaotong Univerisity, Lanzhou, 730070, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Hydrology and Water Resources Bureau of Qinghai Province, Xining, 810001, China; Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China; Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing, 100101, China
推荐引用方式 GB/T 7714	LUO D.-L.,JIN H.-J.,DU H.-Q.,et al. Variation of alpine lakes from 1986 to 2019 in the Headwater Area of the Yellow River; Tibetan Plateau using Google Earth Engine[J]. 中国科学院西北生态环境资源研究院,2020,11(1).
APA	LUO D.-L..,JIN H.-J..,DU H.-Q..,LI C..,MA Q..,...&LI G.-S..(2020).Variation of alpine lakes from 1986 to 2019 in the Headwater Area of the Yellow River; Tibetan Plateau using Google Earth Engine.Advances in Climate Change Research,11(1).
MLA	LUO D.-L.,et al."Variation of alpine lakes from 1986 to 2019 in the Headwater Area of the Yellow River; Tibetan Plateau using Google Earth Engine".Advances in Climate Change Research 11.1(2020).