基于RS的兰州、西宁地区地表水资源变化监测

Monitoring of Surface Water Resources Movement in Lanzhou and Xining Area Based on RS

采用监督分类方法,利用1986、1997、2001、2006年四期TM 5遥感影像对兰州西宁地区进行了土地利用类型分类,并从中提取了该区域各县市和总体的水域面积,发现除个别县市水域面积在增大外,该区域水域面积整体上趋于减少,与实际统计数据比较说明该方法是一种可行的地表水资源监测方法。

It takes the supervised classification method and is based on the four TM5 remote sensing images in 1986, 1997,2001,2006 to do the land use classification in Xining area of Lanzhou, and extracted the water area in the region and the overall city, at last, in addition to individual cities and counties in the larger water area, the water area in the region tend to decreasing overall. Comparing with the actual statistical data, the method shows that is a viable method of surface water monitoring.