Focuses the researches on a eutrophication model after drainage of waste water and drawing water from the Qiantang River to the West Lake,the state variables in the model are phosphorus in algae cells,orthophosphate,phosphorus in detritus and phosphorus in sediment.The model describes phosphorus circulation in the ecosystem of the West Lake.The results of model calibration and verification show that the model can reasonably respond to the changes of forcing functions for drawing quantity and temperature of ...