Six plots(grass slope

grass-cut slope

plowed grass slope

shrubby slope

shrub-cut slope

and plowed shrubby slope) in the Yan'gou watershed were constructed and infiltration data for thirty simulated rainfall events were analyzed.Results showed that the average infiltration rate on vegetable slope was 1.2 times greater than that on shrub-cut slope and 2.0 times greater than that on plowed slope.For the soil bulk density of 1.27 or 0.99 g/cm3 on grass slope or shrubby slope

the average infiltration rate varied with rainfall intensity as a parabolic function at a slope of 7 degree.When rainfall intensities for grass slope

grass-cut slope

shrubby slope

and shrub-cut slope were 1.62

2.21

2.49

and 1.71mm/mim

the maximum averaged infiltration rates were 1.17

0.97

1.67

and 1.51mm/min

respectively.In contrast

when rainfall intensities for plowed grass slope and plowed shrubby slope were 1.36 and 1.68mm/min

the minimum averaged infiltration rates were 0.379 and 0.382mm/min

respectively.In conclusion

the Horton's model better simulates the infiltration process under the condition of the different land uses.