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青藏高原的湖泊水位变化能够清晰的记录湖泊波动,分析近几十年来气候变暖背景下青藏高原典型湖泊水位的动态变化,对理解全球变化的区域响应特征和规律有重要意义。本文利用多源遥感数据,获取1972-2012年青藏高原南部地区5个典型湖泊的面积与水位序列,并分析了40年来湖泊水位的变化特征。研究结果表明,1972-2012年,普莫雍错,塔若错,扎日南木错水位呈上升趋势,分别上升了0.89 m、0.70 m、0.40 m;同期,佩枯错与玛旁雍错的水位呈下降趋势,分别下降了1.70 m、0.70 m。总体来看,五个湖泊在1990s-2012年的变化比1970s-1990s的变化更剧烈,从空间变化看,处于青藏高原边缘地带的佩枯错与玛旁雍错发生的变化呈现一致性,而位于中部地带的塔若错与扎日南木错的变化也呈现一致性。
The change of lake water level in the Qinghai-Tibet Plateau can clearly record the lake fluctuation. Analyzing the dynamic changes of the typical lake water level in Qinghai-Tibetan Plateau in recent decades is of great significance in understanding the regional response characteristics and laws of global change. In this paper, the multi-source remote sensing data were used to obtain the area and water level sequence of five typical lakes in southern area of the Tibetan Plateau from 1972 to 2012, and the change characteristics of the lake water level in 40 years were analyzed. The results show that the water level of Namco fault in Pumavongshu, Tazuoerou and Zajian rises from 0.89 m to 0.70 m and 0.40 m respectively from 1972 to 2012. In the same period, The water level showed a downward trend, decreasing by 1.70 m and 0.70 m respectively. Overall, the changes of the five lakes in the 1990s-2012 changes from 1970s to 1990s are even more dramatic. From the perspective of spatial change, the changes of Pekui to Mahayana faults in the margins of the Qinghai-Tibet Plateau coincide with each other, The changes of Taoruo and Zarzam Namco in the central area also show consistency.