By using of ERDAS and ARCGIS softwares, two TMs and one ETM+ of Xuzhou City in 1994, 2000 and 2003, together with a 1:50000 topographic map of Xuzhou City, the built-up expansion of Xuzhou is studied.

• 摘要利用ERDAS及ARCGIS软件，以徐州1994，2000及2003年的遥感图像为数据源，结合1:5万地形图研究徐州市建成区的扩展情况。