Using digital processing method of remote sensing and GIS, TM images in 1996 are interpreted and the database of the sandy land in Gansu province is established.

• 以TM影象为信息源，在全数字方式下运用遥感技术与地理信息系统技术结合建立了甘肃省沙地的TM图象数据库、图形数据库和属性数据库。