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以湖南省长沙市、株州市和湘潭市为实验区，利用1988，1991和1995年内3个时段的TM图像，采用亮度指数和垂直植被指数平面分类方法进行土地利用动态变化信息的提取．通过建立土地动态监测信息系统进行城市扩展的监测和信息管理研究．
Taking Changsha City, Zhuzhou City and Xiangtan City in Hunan Province as experimental areas, using the TM images from 1988, 1991 and 1995, the land surface dynamic change information was extracted using the plane index method of luma index and vertical vegetation index. Through the establishment of land dynamic monitoring information system for urban expansion monitoring and information management research.