基于区间型逼近理想点法的水环境安全评价

Water environmental security evaluation based on interval-type TOPSIS method

水环境安全评价指标往往存在于某一范围,为了更准确地评价某地区的水环境安全,尝试将不确定多属性决策方法中的区间数方法用于水环境安全评价。通过构建水环境安全评价指标体系以及水环境安全等级各指标的区间数,采用区间型逼近理想点法对评价区水环境安全程度进行评价,并用此方法对沈阳经济开发区进行水环境安全评价。结果表明该区未来5～10a的水环境安全状况将会逐渐改善。

The evaluation indices of water environmental security are commonly presented as a range rather than a value, so it is more appropriate to evaluate them using the interval number method. This study attempts to use the interval-type TOPSIS method to evaluate the water environmental security of a certain area through establishing an evaluation index system of water environmental security and constructing the interval number of the indices of the security levels. This method was applied to the evaluation of the water environmental security of the Shenyang economic development zone. The results show that the water environmental security in this area will improve in five to ten years.