Regional Water Resources Carrying Capacity Based On SD Model Of Huangshi Port Industrial Park

Huangshi Port Industrial Park is in the planning stages of development, at the same time ofrapid social and economic development will lead to shortage of water resources and waterdamage to the environment. Coordinated development of water resources, socio-economic andecological environment, Huangshi Port Industrial Park Water Resources Carrying Capacity (SD)model is created by using system dynamics method. According to the status of planning anddevelopment of industrial parks, water system is divided into five subsystems, using the principleof system dynamics analysis of the relationship between the various elements of the subsysteminternal. Then designing model system flow diagram,determining the model variables andequations and constructing the SD model with the simulation software Vensim.Decision variables are contained: the amount of the Yangtze River drinking water,industrial water recycling rate, fixed irrigation water, sewage centralized treatment rate and so on.After the model passed validation, we should design five programs including the status quoprogram. Evaluation index are contained: population, GDP, the total water supply, supply anddemand pressure, water demand, the difference between supply and demand, the total volume ofsewage, and the total amount of COD emissions.We can get the evaluation analog value ofdifferent options by changing the decision variable, then the analog value is plotted to compare,and a brief analysis and comparison of the water resources carrying capacity in five programsshould be done with the AHP chromatography to select the optimal solution.The results show that: the simulation results of the comprehensive program combined withopen source, the throttling pollution control and adjust the industrial structure, is relatively good,and has the largest water resources carrying capacity with the strongest capacity for sustainabledevelopment, therefore it is selected as the optimal solution. In accordance with the optimalsolution to evaluate the status quo planning of the industrial park, we should propose theoperability of the specific measures and recommendations according to the unreasonable aspects.