8Joao E M,Walsh S J.GIS Implication for hydrologic modeling:simulation of nonpoint pollution generated as a consequence of watershed development scenarios[J].Computer Environment Urban System,1992,16:43-63.
9Chariat S,Deleur J W.Integrating a physically based hydrological model with GRASS[A].In:Kovar k(ed).Application of GIS in hydrology and water resources management IAHS[C].Wauingford:IAHS.Publ Int,Assoc.Hydrological Sciences,1993,211:143-150.
10Beasley D B,Hugginsand L F,Monke E J.ANSWERS:A model for watershed planning[J].Transactions of ASAE,1980,23(4):938-944.