黄土高原水土流失型非点源污染过程模拟研究进展

Loss of nitrogen and phosphorus in soil and water loss area of the Loess Plateau not only reduces the utilization rate of fertilizer, but also is a potential threat to aquatic environments. This study takes the typicality of soil and nutrient loss in the Loess Plateau Region as a starting point to deeply analyse and systematically summarize the basic status of the Loss Plateau，the research progress of hydrological process, soil erosion, erosion-type nonpoint source pollution and its control strategies of the Loess Plateau. Aiming at the few existing studies on the Loess Plateau, the key research directions of nonpoint source pollution in the Loess Plateau for the future were proposed, such as the loss mechanism of nonpoint source pollution, the load estimation method of nonpoint source pollution in the Loess Plateau, the coupled model of water, sediment and pollution in the Loess Plateau, the combined application of 3S technology and control strategies of erosion-type nonpoint source pollution in the Loess Plateau etc.. This result may provide reference for studying the modeling process of erosion-type nonpoint source pollution in the Loess Plateau.