近25年来中亚湖泊面积遥感动态监测

摘要

为探究近几十年来,中亚干旱区水资源的空间分布与地表水循环的时空过程变化,以1990～2015年多时相Landsat TM/ETM+/OLI影像为数据源,对中亚主要湖泊(艾比湖、巴尔喀什湖、阿拉湖、赛里木湖、伊塞克湖、萨瑟克湖、卡普恰盖水库)进行遥感解译,获取面积变化特征.结果表明,受地形及气候变暖影响,高山封闭型湖泊面积保持稳定并有小幅度上升;平原区尾闾湖受人类活动影响较大,面积有不同程度的缩小;吞吐湖面积有增有减,波动较大,不稳定性较强.%In order to grasp the latest trend of temporal and spatial variation of the water resources in central Asia arid regions,taking Landsat TM/ETM+/OLI images in multi-period of 1990-2015 years as the data source,the main lakes of central Asia (Ebinur Lake,Balkhash Lake,Alakol Lake,Sailimu Lake,Issyk-Kul Lake,Sasykkol Lake,Kapchagay reservoir) are remote interpreted,and the changes of lake areas are acquired.The results show that alpine closed lakes are stable with a small increasement because of the terrain and climate warming,the area of plain lakes reduce in different degrees because of human's activities,the changes of throughput lake is more complicated with more instabilities.