Lake change and its implication in the vicinity of Mt. Qomolangma (Everest), central high Himalayas, 1970-2009

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	Lake change and its implication in the vicinity of Mt. Qomolangma (Everest), central high Himalayas, 1970-2009
	Wang Zhaofeng; Liu Linshan; Zhang Yili
	2012
关键词	Lakes Climate change Shrinkage
英文摘要	High-elevation inland lakes are a sensitive indicator of climate change. The extents of lakes in Mt. Qomolangma region have been extracted using the object-based image-processing method providing 6-24 images during 1970-2009. Combined with data from five meteorological stations and three periods' glacier data, the inter-annual and intra-annual lake changes and responses to climate and glacier change have been analyzed. The results show that the lakes have shrunk overall, with clear inter-annual and intra-annual fluctuations during 1970-2009. In general, there appeared a trend of slight shrinkage in the 1970s, distinct shrinkage around 1990, general expansion in 2000 and accelerated decrease after 2000. Lake Peiku and neighboring lakes show a highly consistent change trend (correlation coefficients of 0.68-0.91), with larger lakes having smaller shrinkage rates, which implies a higher stability (in the order of PeikuLangqiangCuochuolong). Lake Peiku, the largest lake, decreased 10.38km2 (3.69% or 0.27km2year-1) during 1970-2009. The changes in Lake Peiku indicate that precipitation is its main source of supply with glacier melt water a key supplement. Meanwhile, Lake Como Chamling reduced by 13.12km2 (19.79%) during 1974-2007, with strong shrinkage-expansion-shrinkage-expansion fluctuations. Overall, lakes in the vicinity of Mt. Qomolangma are a sensitive good indicator to climate change. 2012 Springer-Verlag.
出处	Environmental Earth Sciences
页	1-15
收录类别	EI
语种	英语
内容类型	EI期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/27660]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Wang Zhaofeng,Liu Linshan,Zhang Yili. Lake change and its implication in the vicinity of Mt. Qomolangma (Everest), central high Himalayas, 1970-2009. 2012.