Based on the application of GIS, remote sensing and quantitative methods, this paper studies the landscape mosaic structure of the Xigu district in the city of Lanzhou. First, the region’s landscape of TM image was classified into ten types of land use patterns, they are: farmland, orchard, grassland, woodland, scattered woodland, bare land, water area, urban area, rural settlement, and industrial area far from settlement. Next, the classified information together with surveyed data was served as the inputs...