以长江流域支流燕子河流域为例,选取了坡耕地面积比、垦殖指数、植被覆盖率、农业人口密度、农业总产值、农业人均产粮、农业人均年收入和沟壑密度等8个指标来表征影响区域水土流失状况的驱动力因素。运用灰色系统分析法确定了各个指标因子的关联程度,并根据综合干扰度进行了水土流失生态分区。 Taking the Swallow Tributary of the Yangtze River Basin as an example, 8 indicators including the area ratio of cultivated land, cultivation index, vegetation coverage, agricultural population density, agricultural output value, agricultural per capita grain production, per capita agricultural income and gully density were selected Driving Factors Affecting Soil and Water Loss in the Region. The gray system analysis method was used to determine the degree of association of each index factor, and ecological division of soil and water loss was carried out according to the integrated disturbance degree.