Experiments of artificial simulated rainfall were conducted in Qingshan lake valley of Zhejiang province.Different slopes and rainfall intensities were designed in experiments to analyze effects of four types of coverage on nitrogen and phosphorus loss in runoff.The analysis have come to the following conclusions: Under the same rainfall intensity in sloping field

the concentration of TN and NH 4-N in runoff were in order of the sequence : artificial turf

forest

grassland to bamboo.Trends of TN concentration curve in four types remain stable

the increase of rainfall intensity does not affect the order of four types

but the difference between concentration of artificial turf and the other types increases with the increasing rainfall intensity.Under the same rainfall intensity in sloping field

the concentration of TP in runoff were in order of the sequence: artificial turf

forest

grassland to bamboo.The processes of TP concentration were very similar in runoff.With the rainfall intensity increased

the percentage of DP in TP also increased accordingly.