average watershed slope meaning in English

流域平均坡度

The topographic feature is one of the main factors that influence the process of soil erosion and sediment yield of small watershed . the quantitative parameters of small watershed topographic feature are average watershed slope , average slope length , gully density and so on , which are based on the quantitative method of slope character and do not reflect the essential character of the small watershed topographic feature , which are complex
地貌形态是影响小流域侵蚀产沙的主要下垫面因素之一，其量化参数一般继承坡面地貌特征量化方法(如坡度、坡长因子)而采用平均坡度、平均坡长及沟壑密度等参数，这些参数仅是对流域地貌形态的概化和单因子表达，没有真正反映流域地貌形态复杂的本质特征和相互联系。