用聚类分析 模糊综合评判评价地质环境质量
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摘要
讨论了应用聚类分析、模糊综合评判进行地质环境质量评价的原理、方法和步骤，并将其应用于陕西省地质环境质量评价。根据陕西省地质环境复杂多变，受多因素制约的特征，将全省剖分成３５０ 个样品单元，选取地下水资源、地表水资源、水质、土地资源、地形地貌、岩土体特征、植被、气候、地震、滑坡、泥石流、地方病、水土流失、沙漠化、地面沉降、地裂缝、盐碱化、沼泽化等１５ 个变量作为评价因子，采用Ｑ 型聚类分析方法，将全省分成３７ 个地质环境质量分区，并通过模糊综合评判，将其划分成７ 个地质环境质量等级，客观地反映了陕西省地质环境质量的宏观分布特征。
This paper discusses the principles,ways and moves of using cluster analysis and fuzzy comprehensive judgment to evaluate geological environment quality and applies them to geological environment quality evaluation of Shaannxi Province.Based on the complicity and variety of geological environment of Shaanxi Province and the feature which is controlled by various factors,this paper divides the whole Shaanxi Province into 350 sample elements and selects groundwater resource,surface water resource,water quality,land resource,topography,landforms,lithologic characteristics,vegetation,climate,earthquake,landslip mud rock flow,endemic disease,soil erosion,desertification,land subsidence,surface geofracture,salinization swamp etc. 15 variables as evaluation factors,uses Q cluster analysis to divide the whole Shaanxi Province into 37 distribution areas of the geological environment quality,and classifies them into 7 grades of geological environment quality by using fuzzy comprehensive judgement,it reflects the macro distribution feature of the geological environmetn quality of Shaanxi Province objectively.The result is correct and reliable.
This paper discusses the principles,ways and moves of using cluster analysis and fuzzy comprehensive judgment to evaluate geological environment quality and applies them to geological environment quality evaluation of Shaannxi Province.Based on the complicity and variety of geological environment of Shaanxi Province and the feature which is controlled by various factors,this paper divides the whole Shaanxi Province into 350 sample elements and selects groundwater resource,surface water resource,water quality,land resource,topography,landforms,lithologic characteristics,vegetation,climate,earthquake,landslip mud rock flow,endemic disease,soil erosion,desertification,land subsidence,surface geofracture,salinization swamp etc. 15 variables as evaluation factors,uses Q cluster analysis to divide the whole Shaanxi Province into 37 distribution areas of the geological environment quality,and classifies them into 7 grades of geological environment quality by using fuzzy comprehensive judgement,it reflects the macro distribution feature of the geological environmetn quality of Shaanxi Province objectively.The result is correct and reliable.
引文
1 付雁鹏等. 模糊数学在水质评价中的应用. 武汉:华中工学院出版社,1986
2 张俊福等. 应用模糊数学. 北京:地质出版社,1988
2 张俊福等. 应用模糊数学. 北京:地质出版社,1988
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