Abstract:

Rainfall erosivity shows the potential ability of the soil loss caused by rainfall. It is an important research task in soil erosion quantitatively evaluating field to accurately evaluate rainfall erosivity. The purpose of this paper is to review research history results of rainfall erosivity, rainfall energy of our country, and the research results are summarized. Because the local environmental situations are different, erosive rainfall standard and rainfall energy calculation may have difference; rainfall erosivity indicator based on the principle of EI30 and EI10 in north china, while based on the principle of EI60 in south china; rainfall erosivity calculation uses simple algorithm commonly. Estimating rainfall erosivity mainly based on the daily rainfall data is research contents in recent years.