In the article I have analyzed the present method limitation of region atmospheric environment quality assessment,introduce the gray system method to assess the region atmospheric environment quality. Then I explain grey clustering analysis,grey relational analytic method and the main steps.
论文首先分析了现行区域大气环境质量的评价方法的局限性,将灰色系统方法引入区域大气环境质量的评价中,阐述了灰色聚类分析法、灰色关联分析法及其主要步骤。
参考来源 - 区域环境质量的灰色分析·2,447,543篇论文数据，部分数据来源于NoteExpress
以灰色聚类为基础，提出了梯形灰色聚类分析法，并将其应用于环境质量评价之中。
Based on the gray assembles, the trapezium gray analysis is presented, and it is applied to environmental quality assessment.
以灰色聚类为基础，提出了灰色模糊聚类分析法，并将其应用于土壤环境质量评价中。
Based on grey collection, grey collection analysis method is pointed out and applied to assessment of soil environmental quality.
以迁安市为例，对迁安市的干旱程度进行综合评价，结果表明灰色模糊聚类分析法在区域干旱评价中是适用的。
Qian 'an city arid degree is evaluated, it indicates that the analytic method of the gray-fuzzy in the region arid evaluation is suitable.
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