River Water Quality Management Decision Support System Applied Research

Decision Support System (DSS) is a human- machine interactive information system, which apply the decision science theory and method to settle the consequential or half- consequential decision problem. It can help the manager to do the correct decision through providing the background material, helping to definitude the issue, amending the model, and so on.In this recent year, with the rapid development of the social economy along the DongJiang drainage area, the contamination drain into the DongJiang River is increasing rapidly year after year. It's very urgently to establish the water quality management decision Support System of the DongJiang drainage area. The author tries to establish the DongJiang River forecast and evaluation model to give the reference for decision Support System of other area.The main study content of this paper is using BP-NN model which based on the L-M method to predict the water quality of DongJiang River, and giving the related algorithms and simulation results. Some methods of evaluation water quality are studied, which are often used in water quality management. An example of estimating DongJiang cross-section is brought forward, which is using the isogradient obscure clustering method. Software is developed with some tools such as C++ Builder5 and SQL Server2000. Database management sub-system, which can query and export data from database of servers. And a water quality model-base is established. In this system, user can compute the parameters of water quality and analyze their changes.