从区域水环境与经济协调发展出发,建立了区域水环境的决策支持系统。介绍了区域水环境经济系统决策支持系统的设计原则、系统结构、系统组成及系统功能。系统由数据库、模型库及其管理系统三部分组成,具有预测、优化、模拟和管理等功能。模型库包括宏观经济模型、环境经济多目标优化模型、需水模型、水环境容量模型和水环境分析模型等5个基本模型。在求解水环境经济多目标优化模型时,使用了约束法,把多目标化为单目标进行求解。在决策过程中,使用逐步法,在迭代过程中输入经验与偏好获取满意的决策信息

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