川西北丘陵区降雨侵蚀力指标R的初步研究

A Primary Study of the Index(R) of Eroding Force of Rainfall in Hilly Areas of Northwest Sichuan

川西北丘陵区降雨侵蚀力指标R的最佳组合结构是降雨总动能(∑E)与其40分钟最大雨强(I_(40))的乘积,即R=∑E·I_(40)。降雨侵蚀力指标R与土壤侵蚀量的相关关系形态是线性关系。

The optimal combination structure of the index (R) of eroding force of rainfall in hilly areas of northwest Sichuan is that the product of the total kinetic energy (∑ E) of rainfall and its maximum intensity for 40 minutes (I_(40)) is R = ∑ E ·I_(40). The index (R) of eroding force of rainfall is linear with the amount of soil erosion.