The System Dynamic Pricing Model Research Of Sustainable Water Resources Utilization In Changchun City

Because the water Resources in China are scarce and unbalanced distributed, theaverage owning amount per capita is very low. Water resource problems becomesincreasingly serious with the increasing growth of population and the constant quickeningof the urbanization and industrialisation process.Water resource shortage problems of Changchun city are always combined with itseconomic development process. First, Changchun city is suffering from water shortagebecause the amount of water resources are gradually decreasing, the consciousness ofwater conservation is weak and the efficiency of the water uses are very low. Second,water pollutions and unreasonable utilization phenomenas become more and more seriouswith the development of the city. At last, the water supply management system isunreasonable and the revelant laws and regulations are inadequate.Water price as an economic lever can optimize water resources allocation, maintainthe efficient operation of the water suply, guide the healthy development of water market,strengthen the water saving consciousness and promote the sustainable utilization of waterresources. promoting the reform of water pricing is one of the most important measures toimplement the scientific development concept. It can benefit the transformation of theeconomic growth pattern and be conducive to the strenthening of the environmentalprotection, safeguarding of the people’s interests and the construction of theconservation-minded society.In this paper, recent studies on water resources were summarized at first, then thetheory of sustainable development and Water Resource Value and the role water priceplayed in the sustainable utilization of the water resources were summarized, finally,Vensim software was used to simulate the water suply and demand changing situations in2015and2020based on the system dynamics principle and adjust the water demandaccording to the different water prices so as to realize the balance of supply and demandof water resources.The results revealed In Changchun city there will be37million cubic metres waterresources suply-demand dificit in2015and123million cubic metres in2020. in order to realize the balance of water resources, the resident water price and industry water priceare adjusted to4.4yuan per ton and8.1yuan per ton respectively in2015and14yuan perton and24,8yuan per ton respectively in2020. the caculation of the water price is underthe consideration of the urban water demand and the resident’s bearing capability, so theprice is reasonale and acceptable.