中文摘要：

本文以正蓝旗境内沙漠化研究为例来分析了浑善达克沙地东部地区沙漠化近今演变情况，运用20世纪80年代和90年代两张卫星遥感照片进行解译结合现场调查抽样验证方法、测算了浑善达克沙地东部沙漠化土地发展现状及面积，为今后的沙漠化的治理和防止提供了一定的依据。

英文摘要：

The desertification situation of Eastern area of Hunsandake sandy land in recent ten years was analyzed. Utilizng the 80＇s and the 90＇s two satellites remote sensing pictures and combined with investigation sampling confirmation method, the present situation and the area of desertified land of Hunsandake were deter＇mined, Which provided the certain basis for control of desertification.