基于RS与GIS的喀什地区绿洲近30年的变化研究

STUDY ON THE CHANGE OF KASHGAR ADMINISTRATIVE OFFICES OASIS OVER 30 YEAR PERIOD BASED ON RS/GIS

以新疆喀什地区1975、2000和2005年3个不同时期的遥感影像(MSS、TM和SPOT)为数据源,利用ERDAS和ARCGIS软件对其进行配准、解译和分类处理,得出了分类图和土地利用转移矩阵,对比分析了喀什地区绿洲近30年来的动态变化,并进一步研究了绿洲变化驱动机制.结果表明,1975～2005年30年间,喀什地区绿洲总体呈现稳步增长态势,面积逐步扩大,绿洲的空间分布也发生了较大变化.人类的社会生产活动正深刻影响着绿洲的规模和格局,为了防止绿洲的退化,对绿洲进行动态监测势在必行.

This paper discusses the dynamic changes of the Kashgar Administrative Offices oasis over 30 year period by using 3 periods of remote sensing imagery： Mss（1975）, TM（2000） and SPOT（2005）. Remote sensing data were interpreted and classified using ARCGIS and ERDAS software and we obtain classification map and land use conversion matrix by humanmachine interaction classification. At last, we obtain the dynamic changes of Qapqal oasis and find out the reason of drive which cause the dynamic changes. The results show that from 1975 to 2005, the Kashgar Administrative Offices oasis show steady growth in the whole area, the area is also expanding, and the spatial distribution of oasis has also undergone a major changes. Human social activities exert a profound impact on the scale and pattern of oasis. In order to prevent the degradation of oasis, oasis dynamic monitoring is imperative.