5Carleton M G.Comparison of overflows from separate and combined sewers-quantity and quality.Wat Sci Tech,1990,22 (10/11):31～38
6Takahashi, M. Guidelines for environmental enhancement in Ja- pan[J].Water Sci. Technol. ,1991,24(9):133- 142.
7Che, W. , Y. Liu,J. Q. Li. Flushmodel of runoff on urban non point source pollutants and analysis[A]. In Water and Environ mental Management Series[C]. London:IWA Publishing, 2003.
8Dikshit A K, Loucks D P. Estimation Nonpoint Pollution Loadings [C]//A Geographical Information Based Nonpoint Source Simulation ModelJ Environ Sys, 1996, 24(4) : 395.
