Design of decision support system for regional water environment-economic system
区域水环境经济系统DSS的设计

Water environmental pollution, which is a complex problem, deals with the systems of ecology, society, economy, and resources Therefore, synthetic analysis of the above mentioned factors must be carried out along with the study of the coordinated development of water environment and economy.The macro economic system should be taken as a fundamental starting point to study how to control the pollution to the optimum level, and seek suitable economic structure and developing rate, so as to realize the aim of water environmental protection The regional water environment economy decision support system was designed to address water environment management issue, assisting decision makers to resolve the decision making problems of the coordinated development of water environment and economy The decision support system used modularization idea according to the characteristics of the system, for convenient model modification and expansion,each module has its particular function and independency.Meanwhile, all these modules are an integral one,taking fully into account the entire harmony. In which the macro economic module is regarded as the primary module which promotes other modules assisting decision making for decision makers, so as to achieve computerization in assisting decision making of the regional water environment and economic coordinated development The system consists of three components: database, model base and user interface Database management system, the basis of decision support system, provides the information of basic data to decision makers and the supporting data for model run so as to store calculated results The model base integrates models of macro economics, environment economy multi objective programming, water resources demand, water environmental capacity, and water environmental analysis, and the multi objective programming model includes production structure optimization model and industrial structure optimization model, the water resources demand model includes ecological, agricultural, industrial and domestic water demand model After the basic information made up and operated by the model, the optimization recommended schemes and development mode under different environmental protection aims, different economic development speeds and different macro policies were put forward, then the man machine conversation system provides this result to decision makers, thus it can help the decision makers produce correct judgement through schemes comparison The solution was achieved by using multi objective programming and regarding the constraints as optimization objectives, and the decision making information was obtained by means of input expert experience and knowledge via the step by step method The system has some functions, such as prediction, optimization, simulation and management, accordingly it provides an effective means for water resources and water environment management