This contribution to studies of the impact of climate change on glaciers and lakes in high-altitude closed basins of the western Himalaya presents spatial and temporal variations of glaciers and lakes in the Mapam Yumco basin on the Tibetan Plateau, determined using Geographical Information System (GIS) and remote-sensing techniques. Under the warmer climate, for local glacial lakes that connected to glacier termini, lake enlargements are closely related to more water supplies from accelerated melting glaciers (Chen and others, 2007). For larger lakes in closed basins without water flowing out at high elevations (>4000 m a.s.l.) which are fed by four sources (rainfall, snow melt, frozen ground melt and glacier melt), how much water from melting glaciers contributes to lake changes is still in question. A study of variations in areas of both glaciers and lakes in a multi-source basin may help us understand the impacts of climate change on glaciers and lakes in high-altitude basins.
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