应用卫星影象估算通用土壤流失方程各因子值方法的探讨

A method for determining factors of USLE by using satellite photos

本文介绍了应用卫星影象估算通用土壤流失方程各因子值的原理与方法,计算了海河流域太行山区不同地貌类型区的各因子值和土壤侵蚀模数,并以实例验证了这种方法的可行性。文章认为,采用这种方法计算的土壤侵蚀模数,与实测值基本一致,可满足大流域土壤侵蚀分级的精度要求。

A method and its principles for determining factors of USLE by using satellite photos is presented in this paper. The method was used to determine the factors and module of erosion for different types of geomorphic regions in Taihang mountainous area. Feasibility of this method was checked by sampling. The author suggests that the erosion module determined by this method is close to observed with aceurancy satisfying for soil erosion classification of a huge basin.