摘要
传统方法估算土壤侵蚀量限制因素过多,USLE方程为土壤侵蚀量估算提供了一般算法,但是USLE方程中各因子的求算没有通用方法,在各个研究区域的运用难以量化。对基于GIS的USLE方程各因子计算方法进行探讨,给出了基于GIS技术USLE估算流域土壤侵蚀量的一般方法,以提高USLE方程在我国的可用性。
There are too many fimiting factors to estimate the amount of soil erosion with the traditional methods,the USLE equation provides a general algorithm for soil erosion ,but factor in the USLE equation calculating no universal method ,it is difficult to quantify for use in each study area. In this paper, the GIS-based USLE equation factors calculation method was discussed,the formulates universal methods of USLE estimates of soil erosion based on GIS technology was proposed, so as to improve the availability of USLE equation in China.
出处
《现代农业科技》
2013年第1期206-207,209,共3页
Modern Agricultural Science and Technology
