层次分析法(AHP)在三江平原地质环境质量评价中的应用

Application of the analytic hierarchy process (AHP) in the evaluation of the geo-environmental quality in the sanjiang plain

应用层次分析法(AHP)对影响三江平原环境地质质量的岩石、土壤和水3个子系统分别进行评价,通过分析影响各子系统的主要因子,建立子系统层次结构模型和质量指数数学模型,得出各子系统的质量指数,从而评价出各个子系统的质量状况。在此基础上,建立地质环境系统质量评价的层次结构模型和数学模型,计算出地质环境质量指数,并对该地区的质量状况进行评价,得出三江地区总体环境地质状况是好的结论。

The analytic hierarchy process(AHP)method is used to assess three sub-systems-rock, soil and water-that influence the quality of the geo-environment of the Sanjiang plain. By analyzing the major factors that define the three sub-systems,a hierarchical structure model of the sub-system and a quality index mathematic model are constructed and the quality indices of the three sub-systems are obtained. Then the geo-environmental quality of the three sub-systems is assessed with the AHP and index model.On that basis, an integrated hierarchical structure model and a mathematic model for the systematic quality assessment of the geo-environment are constructed and the geo-environmental quality index is calculated.Finally the quality of the study area is evaluated.The results show that on the whole the geo-environmental quality of the Sanjiang plain is good.