By the support of ARC/INFO ge ographical information system and integration of GIS and USLE,the soil erosion amount of Yuzigou small watershed was predicted.

• 在地理信息系统ARC/INFO支持下,根据通用土壤流失方程式(USLE)对数据库实施运算操作,预测了芋子沟小流域土壤侵蚀量。