Compare Three Methods of Groundwater Vulnerability Evaluation

The research of groundwater vulnerability is the basic work to protect the groundwater. For sustainable utilizing groundwater resource, evaluating groundwater vulnerability is necessary .Useful reference to protecting, exploiting and utilizing groundwater resource are provided rationally. Three methods are applied to evaluating the groundwater vulnerability in Sanjiang Plain. They are the entropy weight coefficient model, the projection pursuit classification model based on RAGA and the multi-objective fuzzy pattern recognition model. The satisfied results are acquired. After comparing the results each other, their advantages and disadvantages are analyzed. They offer new ways and methods for evaluating groundwater vulnerability.