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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。
The principles, methods and steps of applying the method of cluster analysis and fuzzy comprehensive evaluation to evaluate the geological environment quality are discussed and applied to the evaluation of the geological environment quality in Shaanxi Province. According to the complicated and changeable geologic environment of Shaanxi Province and the characteristics of being restricted by many factors, the province is divided into 350 sample units, and groundwater resources, surface water resources, water quality, land resources, topography, rock and soil characteristics, vegetation and climate Fifteen variables such as earthquakes, landslides, debris flow, endemic diseases, soil erosion, desertification, land subsidence, ground fissure, salinization, swamping and so on were selected as evaluation factors. The Q-type cluster analysis method was used to divide the province into 37 geological environments Quality partitioning, and through fuzzy comprehensive evaluation, it is divided into seven geological environmental quality levels, objectively reflecting the macroscopic distribution characteristics of geological environment quality in Shaanxi Province.