PROGRESS IN GEOGRAPHY ›› 2011, Vol. 30 ›› Issue (3): 325-329.doi: 10.11820/dlkxjz.2011.03.010

• Original Articles • Previous Articles     Next Articles

Empirical Soil Erosion Model for Single Rainstorm in Chabagou Drainage Basin

CHEN Xiaoan1, CAI Qiangguo2, ZHENG Mingguo2, LI Junlan2   

  1. 1. Institute of Soil andWater Conservation, Nanchang 330029;
    2. Institute of Geographic Sciences and Natural Resources Research, Key Laboratory ofWather Cycle & Related Land Surface Processes, CAS, Beijing 100101
  • Received:2010-10-01 Revised:2011-01-01 Online:2011-03-25 Published:2011-03-25

Abstract: Soil erosion model was not only important for soil erosion forecast, but also important for soil and water conservation performance evaluation. This paper established a mixed rainfall erosion model, an erosive rainfall erosion model and a rill erosion model, and analysed the accuracy of the soil erosion model, on the basis of hydrological data of rainfall in Chabagou drainage basin. The results showed that the model had a good prediction accuracy, and was quite accurate for a big sediment event. Slope, maximum rainfall intensity in 10 minutes and vegetation cover are the main factors for erosive rainfall. Slope, maximum rainfall intensity in 10 minutes and rainfall are the main factors for rill erosion, but vegetation cover has little effect on rill erosion.

Key words: Chabagou drainage basin, single rainstorm, soil erosion model