title: [Study on the land use optimization based on PPI].
abstract: Land use type and managing method which is greatly influenced by human activities, is one of the most important factors of non-point pollution. Based on the collection and analysis of non-point pollution control methods and the concept of the three ecological fronts, 9 land use optimized scenarios were designed according to rationality analysis of the current land use situation in the 3 typed small watersheds in Miyun reservoir basin. Take Caojialu watershed for example to analyze and compare the influence to environment of different scenarios based on potential pollution index (PPI) and river section potential pollution index (R-PPI) and the best combination scenario was found. Land use scenario designing and comparison on basis of PPI and R-PPI could help to find the best combination scenario of land use type and managing method, to optimize space distribution and managing methods of land use in basin, to reduce soil erosion and to provide powerful support to formulation of land use planning and pollution control project.
authors.affiliation: State Key Laboratory of Hydro-science and Engineering, Institute of Hydrology & Water Resources, Tsinghua University, Beijing 100084, China. wuxiaofeng@tsinghua.edu.cn
authors.forename: Xiao-Feng
authors.initials: XF
authors.lastname: Wu
authors.forename: Ting
authors.initials: T
authors.lastname: Li
mesh_terms: D002681:China; D018556:Crops, Agricultural / Q000254:growth & development; D004784:Environmental Monitoring / Q000379:methods*; D006109:Poaceae / Q000254:growth & development; D012987:Soil / Q000032:analysis*; D014197:Trees / Q000254:growth & development; D014872:Water Movements; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014876:Water Pollution / Q000517:prevention & control*; D014881:Water Supply
chemical_list: D012987:Soil; D014874:Water Pollutants, Chemical