Research Of Groundwater Resource Evaluation Models Based On GIS

Groundwater is not only the precious resource, but also one of veryimportant factors of complicated ecosystem.The paper takes Chang Zhou-Wu Jin district where the phenomenon of groundwater over-extraction, groundwater cone of depression and land subsidence is very serious as research area. On the base of analysis of hydrologic geology from aquifer distribution, boundary conditions and dynamic characters etc. in the research area, the paper sums up the hydrologic geologic condition, builds up the conceptual model of groundwater resource evaluation and presents 2D calculation model, as well as numeric solution and computing flow chart.After introducing general solutions of mathematic models and implementation method of rectangular grid, the paper realizes the automatic technique of spatial dispersion rectangular grid of evaluation models based on GIS.Finally, the paper fulfills the integration of GIS with groundwater resource evaluation models from GIS-based basic management information, spatio-temporal dispersion of models, definition of subprogram and visual evaluation of parameters, as well as models simulation etc., and visualizes the results of evaluation models.