Water Environment Evaluation DSS Based On GIS

Environmental management has the features of complexity and variability, and relates to many departments, regions and fields, and needs to deal with huge data. Systematism and informationization is the foundation of environmental management. Therefore, a convenient and scientific decisions supporting system(DSS) that can analyze the relations and divisions between information, and can find the orders between environmental accidents and phenomena, and can give the users intuitionistic results is very needed.Environmental issues keep close relationships with geographic factors. GIS has the advantages on geographic information's processing, such as querying, management, output, analysis, expression. This paper integrated GIS with DSS, to discuss, design and realize a spatial decisions supporting system (SDSS). Firstly, the background and conception of DSS were introduced, and the development of GIS in the present age was summarized. Secondly, the feasibility of the system was discussed and the function was designed. The main function includes map-browse, information-query, analysis and prediction, data-maintenance. After the design of the structure and the choice of developing tools, the system was programmed and the results were demonstrated. At the last, the whole system was summarized.The SDSS can give the decision-makers of environmental management scientific and visual helps on decision making. This paper discussed deeply on the structure of SDSS and its uses on environment-evaluation and flood-disaster-defending, and how to design, realize a SDSS. The system was designed with advanced structure and realized with advanced AI algorithms. The whole design and realizing procedure was introduced.Liaoning Natural Science Funds supported this system. This system has directive value and applied value on SDSS designation and realization, environmental management and decision supporting.