In order to reveal the effect of different coverage measures on the slope erosion of topsoil-bank

the simulated rainfall experiments were conducted in this study. Three coverage measure treatments

which were non-coverage (CK)

geonet-coverage and plant-coverage

were set on the topsoil-bank. The slope ratio of topsoil-bank was 1∶1.5 and the plant used in this study was Trifolium repens L. The rainfall intensities were 0.5，1.0，1.5 mm/min

respectively. The runoff and sediment yield law of the slope surface with the different coverage measures under the different rainfall intensities were studied. The results showed that the coverage measures had significant effects on slope erosion compared to CK under different rainfall intensities. The most runoff and sediment were produced in CK

followed by the geonet-coverage

and the least was plant-coverage. During the whole experiment

compared to CK

the geonet-coverage decreased the runoff by about 50%

while plant-coverage gave a more remarkable decrease (82%). Both geonet-coverage and plant-coverage treatments reduced sediment by more than 94%. In conclusion

coverage measures could inhibit the erosion of rain on the slope

and help reduce the runoff and sediment

among which the plant-coverage had a better role than geonet-coverage.