摘要
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。
In this paper,as an example for the Yanzi river valley of the Changjiang river basin tributary,selected eight index of area ration of sloping land,Cultivation index,Vegetation coverage,density of agricultural population,agricultural GDP,agricultural per capita income and gully density to indicate the influencing states of soil erosion due to driving force factors,and then,determined connection degree of various indicators by using analysis method of gray system.Finally,according to comprehensive disturbance degree the paper suggested the soil erosion degree divisions.
出处
《地质灾害与环境保护》
2010年第2期105-108,共4页
Journal of Geological Hazards and Environment Preservation
关键词
嘉陵江流域
水土流失
驱动力因素
Jialing river basin
soil erosion
driving force factors
