基于GIS的区域环境地质评价--以福建省为例

利用GIS的有关理论和技术，选择区域环境地质评价的指标体系，利用层次分析模型确立其权重系数，构造了区域环境地质评价模型。评价过程中，摈弃了常用的规则网格划分评价单元的评价方法，改进为利用GIS的空间登加功能生成评价单元，并利用GIS的属性数据库对福建省区域环境地质状况进行了定量评价。最后根据评价结果将福建省环境地质状况分为五个区，并分析了各区主要存在的环境地质问题。

Assessment of the Regional Environmental Geological Quality Based on GIS for Fujian Province

Taking Fujian Province as the example,this paper summarises the geographical information system(GIS)-based quantitative analysis method of integrated assessment of regional environmental geology quality,builds the system of influential factors and indexes of regional environmental geology quality and determines their weighty coefficients by the hierarchical analysis method.In the assessment units,the authors abandon the traditional regular partition of assessment units,and adopt the new method to build the assessment units by the space congruence function of GIS.Then the authors assess the integrated environmental geological quality of Fujian Province by using the attribute database of GIS,divide Fujian Province into 5 areas according to the quality and analyze the main environmental geological problems of each area.