Effect Of Forms Of Land Use On Water Quality In Urban Area

Water pollution control and protection of water environment has been one focus of the national environmental protection work,with the introduction of a series of policies and regulations,the river point source pollution has been well controlled.However,after the point source pollution control,water environmental quality of the river has not been significantly improved.In this paper,N Town,Shanghai as an example,select industrial land,agricultural land,residential land,commercial land,and five green indicators to study the effects in the form of urban land use on water quality.After analysis,draw the following conclusions:(1)N town water rate high,water is complex,water pollution is serious,water ecological environment is fragile.(2)pollution in the basin is mainly sewage pollution and agricultural wastewater.(3)industrial land in the N town,residential land and the proportion of green area occupied by large commercial land and agricultural land covers less.And land use structure N town showing a clear "zoning" phenomenon,something many on both sides of industrial land,residential land for the middle ground.(4)through the town 21 N channel analysis,on the one hand it found that residential land and water quality of ammonia and total nitrogen has a more significant effect;on the other hand,green for the improvement of water quality have a more significant role in the promotion.(5)according to the land use structure,the town is divided into three areas in N town,the correlation analysis of the forms of land use and water quality in each area,and found A zone of industrial land and residential land and river water quality more closely linked;business district land and residential land and water quality has a significant impact in B;C zone and land use affects water quality in the form of green space and agricultural land.