基于RS和GIS技术提取木孜塔格峰冰川面积变化

Extracting Area Change of Glaciers in the Ulugh Muztagh Region Based on RS and GIS

为了研究木孜塔格峰区域1977年—2001年的冰川变化情况,本文发挥RS和GIS的技术优势,基于EN-VI、ERDAS遥感软件平台和ArcGIS地理信息系统平台,利用Landsat MSS、ETM卫星遥感影像提取了研究区1977—2001年的冰川面积变化,研究结果表明该区域的冰川在这24年中面积减少了12.678km2。最后对本区域冰川的变化特点进行了分析,认为该区域冰川整体呈现缓慢退缩趋势,并得出气温对该区域冰川面积变化产生了主导作用。

In order to investigate that the glaciers in the Ulugh Muztagh region is how to change,the glacier area change from 1977 to 2001 is extracted use of remote the Landsat MSS/ETM remote sensing images.Here,we make full use of the advantage RS technology and GIS technology and three types of software are used in our experiment,including ENVI,ERDAS and ArcGIS.Our result shows that the glacier area in the Ulugh Muztagh region has retreated 12.678 km2 in the 24 years since 1977.Then a further analysis on the glacier variation characteristic is carried out.It is thought that the glacier shows a slow shrinking as a whole,but some glaciers at special area are in forward.Finally,the temperature is regarded as a key factor of glacier area change in the study area.