In order to study nitrogen and phosphorus losses on red-soil sloping land

field experiments under three typical natural rain events were performed to investigate the N and P transferring processes and their characteristics in the SWC Ecological Science and Technology Demonstration Park of Jiangxi Province.Re-sults showed that under the condition of natural rainfall

the processes of runoff and sediment on natural slope were not stable and continuous and had one or more peak values

because rainfall intensity was not sta-ble and continuous.The processes of runoff and sediment on natural slope were basically the same for the same rainfall event. The cumulative sediment yield and cumulative runoff with time showed a slight growth and then a rapid growth

and tend to change smoothly. The concentration of phosphorus was lower than that of nitrogen

and changes in P concentration were more stable than those in N concentration.There were nu-trition enrichments in eroded sediment

and the N enrichment ratio was lower than the P enrichment ratio under the three rain events.