Research on the Features of Rainfall Regime and Its Influence on Surface Runoff and Soil Erosion in the Small Watershed, the Lower Yellow River

Rainfall has a significant impact on surface runoff and erosion in watershed, there is lack of information about the features rainfall regimes how they affect soil erosion. In paper, based 59 events from 2021 to 2022 lower Yellow River Culai Mountain sub-watershed, various statistical analysis methods were used preliminarily explore regime their influence The results showed that watershed was divided into three regimes: Regime I had highest frequency occurrence, reaching 74.58%, III main power source for paper filtered out indicators (P, I, I30) analyze degree erosion, show precipitation influencing factor affecting variation runoff, maximum 30 min intensity impacting sediment yield. can provide theoretical basis conservation, hydrological forecasting, non-point pollution management.