5GOODCHILD M F. The state of GIS for environmental problem-solving[C]//GOODCHILD M F, STEYAERT L T, PARKS BO. Environmental modeling with GIS. New York: Oxford Univ. Press, 1993: 8-15.
6MAIDMENT D R. GIS and hydrological modeling [C]// GOODCHILD M F, STEYAERT L T, PARKS B O. Environmental modeling with GIS. New York: Oxford Univ. Press, 1993: 147-167.
7LIAO H, TIM U S. An interactive modeling environment for NonOpoint source pollution control [J]. Journal of the American Water Resource Association, 1997, 33 (3) : 591 - 603.