Model and simulation of water environmental system in Changchun

The main problem of regional water environment is the water environmental capacity which is involved in some comprehensive factors of economy,society and environment and related to the object that the sustainable development comes true.In the paper,the DYNAMO language and system dynamic are used to model and simulate water environmental capacity,at the same time,some alternatives are brought forward through controlling some parameters.The perfect scenario of water environment capacity in Changchun city is introduced based on adjusting policy parameter such as technologic investment,public consciousness of saving water,water price and so on,which provides scientific basis for realizing the sustainable development of Changchun.