JIA Yuan-yuan, ZHENG Fen-li, YANG Qin- ke, et al. Construction of Water Erosion Prediction Model at Small Watershed in the Loess Hilly and Gully Region[J]. Bulletin of Soiland Water Conservation, 2004, 23(2): 5-7.
JIA Yuan-yuan, ZHENG Fen-li, YANG Qin- ke, et al. Construction of Water Erosion Prediction Model at Small Watershed in the Loess Hilly and Gully Region[J]. Bulletin of Soiland Water Conservation, 2004, 23(2): 5-7.DOI:
According to erosion vertical zone distribution in the loess hilly and gully region
the methods for demarcating distribution slope location of soil erosion patterns at small watershed are put forward.Based on erosion environmental characters in the loess hilly and gully region
the framework of the distributed water erosion prediction model at small watershed supported by GIS is designed.The fundamental erosion processes in this model included splash detachment
sheet flow detachment and deposition
rill flow detachment and deposition
ephemeral gully flow detachment and deposition
gully flow detachment and deposition
and channel flow detachment and deposition.Meanwhile
the calculation processes of this model are discussed in detail.In term of the principle of dynamic balance of mass
the calculation of sediment yield in the whole watershed is accomplished.