地下水“固有-特殊”脆弱性耦合模型的集对分析

Set Pair Analysis on the Coupling Model for Groundwater Intrinsic-specific Vulnerability

地下水系统同时受固有脆弱性和特殊脆弱性影响问题,在分析地下水系统-污染物负荷-土地利用系统的各个因子相互作用机理的基础上,完善了地下水脆弱性分析中的指标体系,建立了指标因子与评价标准等级之间的五元联系度模型,模型能够通过置信度准则进行脆弱性等级属性识别。同时将耦合模型应用于下辽河平原地下水脆弱性分析中,从同一度、差异度和对立度描述了评价单元与脆弱性等级标准的复杂非线性关系结构,取得了与模糊模式识别法一致的评价结果。实例研究表明:该模型方法思路清晰,过程直观,评价结果实效合理,具有较好的推广应用前景。

Groundwater system is affected by intrinsic vulnerability and specific vulnerability. On the basis of analyzing the interaction mechanism of various factors of groundwater system-pollutant load-land use system, this paper improved the index system of groundwater vulnerability analysis and proposed a five-element connection number model which could identified the integrated grade of each hydrogeology unit by the confidence criterion. Meanwhile, the model was applied in the lower Liaohe river plain to analyze its groundwater vulnerability. This paper described the complex nonlinear relationship structure between evaluation object and grading standard showed effectively through IDO vector. The results was similar with the Fuzzy Patten Recognition. The examples in application showed the coupling model was effective, reasonable and had a good prospect in practices.