Abstract:

Land use types have great influences on nonpoint source (NPS) pollution load in watershed. If the precipitation characters are similar, the land use approach based on the relation between land use types and annual NPS pollution, is available to predict pollution load where has insufficient monitoring data. The fundamentals and principles are introduced in this paper. According to the case study of Heihe watershed, it is showed that the land use approach, with simple structure and program, is feasible and practical to predict NPS pollution load of changed land use.