基于TOPSIS的生命周期影响评价方法

A method of life cycle impact assessment based on TOPSIS

现有生命周期影响评价(Life Cycle Impact assessment,LCIA)方法中,以全球或区域环境影响总值作为基准的归一化方法存在一定的局限性。针对这种局限性,提出了一种基于TOPSIS的生命周期影响评价方法,该方法通过构建虚拟最优方案和最差方案,并通过比较各产品系统与最优方案得接近程度,来判定产品系统的综合环境影响。并通过实际应用案例,对该影响评价方法进行应用验证。

The benchmark of normalization in life cycle impact assessment,such as global figures or regional figures for environmental problems ,has it limitation. It puts forward a new life cycle impact assessment based on TOPSIS about the limitation. The method builds the virtual best product and worst product,and compares every actual product with the virtual best product to get the degree of closeness,which indicates the actual product＇s compositive environmental impact. And it selects an example as application study case to illustrate and verify the impact assessment method.