通用水土流失方程因子定量研究进展与展望

通用水土流失方程是目前预测土壤侵蚀最常用的方法之一，定量确定其因子是应用此模型的关键。简要评述了国外及近年来国内定量估算水蚀因子的方法，讨论了存在的问题，并对我国这方面的研究趋势作了展望。

Advances in research on evaluating the factors of universal soil loss equation

Universal soil loss equation(USLE) is one of the popular methods to predict soil erosion up to now. How to evaluate the factors of USLE is a key to use it. This paper reviewed the international research progresses of quan- tifying those factors as well as the studies advances in China in recent years, and discussed the inadequacies in those studies. Based on them, this paper pointed out that some aspects should be further studied in the future. First, experimental technologies of laboratories and fields should be improved. Second, compared with evaluating other factors, more attention should be paid to quanlifying factors C and K. It is a good way to combine evaluating the two factors with the studies of land use and land cover change. Third, in order to improve the studies on non- point source pollution of water environment, methods of quantifying USLE factors should also be studied in those re- gions in which the problems of water environment are already serious.