Taking Hengshan County as a case, the relationships of land types, soil properties and topography were analyzed at two different scales using CCA method.

• 以横山县为例，从两种尺度上，利用野外调查，实验室分析和典范对应分析(CCA)，得到不同尺度下（小流域尺度和县域尺度）土壤理化性质对环境因子的响应。