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本文研究了山地小流域有效降雨量的估算方法。结果表明，初渗率f0可以认为等于降雨强度，稳渗率f0值在一定条件下恒定不变，但在较长时期内随着植被的变化而改变。同时发现衰减系数k随降雨强度和降雨历时而改变。
This paper studies the method of estimating effective rainfall in mountainous small watershed. The results show that the initial infiltration rate f0 can be regarded as equal to the rainfall intensity, and the steady infiltration rate f0 is constant under certain conditions, but changes with the changes of vegetation in a long period of time. It is also found that the attenuation coefficient k varies with rainfall intensity and rainfall duration.