湖泊科学2011，Vol.23Issue(1)：80-88,9.
1975-2007年中亚干旱区内陆湖泊面积变化遥感分析
Changes of inland lake area in arid Central Asia during 1975 - 2007: a remote-sensing analysis
摘要
Abstract
Inland lakes are major surface water resource in arid regions of Central Asia, the area changes of these lakes were the results of climate changes and human activities.The paper aimed to discuss lake area changes and their mechanism with three different types of inland lakes in Central Asia.Firstly, four time period Landsat MSS/TM/ETM + imagerywere used to delineate water boundary information based on NDWI( Normalized Difference Water Index) threshold segmentation method, then lake area variations were analyzed from 1975 to 2007 and the mechanism of these changes were discussed with meteorological data and irrigation data.The results indicated that total surface area of the nine lakes had decreased continuously from 91402.06km2 to 46049.23km2 during 1975 -2007.The tail-end lakes in plain regions had shrunk dramatically as they were influenced by both climate changes and human activities.Due to the mild climate variations, the areas of alpine lakes remained relatively stable.Under varied human utilities of outflow river water resources, the area changes of opened lakes were much more complicated than those of the other two types.With the climate warming in Central Asia, the area changes of different types of inland lakes reflected that increased anthropogenic disturbances in arid regions had broken the balance of water resource in Central Asia.关键词
中亚干旱区/内陆湖泊/湖面变化/气候波动/人类活动Key words
Arid region of Central Asia/ inland lakes/ lake area changes/ climate change/ human activities引用本文复制引用
白洁,陈曦,李均力,杨辽..1975-2007年中亚干旱区内陆湖泊面积变化遥感分析[J].湖泊科学,2011,23(1):80-88,9.基金项目
中国科学院重要方向项目(KZCX2-YW-307)、国家自然科学基金项目(40730633)和中国科学院西部博士资助项目(08740/1)联合资助. （KZCX2-YW-307）
