模糊数学评价法在衡阳市环境空气质量评价中的应用探讨

Discussion on the Application of Fuzzy Mathematics Evaluation Method in Ambient Air Quality Evaluation of Hengyang City

摘要: 为了解模糊数学评价法在环境空气质量评价中应用前景，运用模糊数学评价法对2016年~2019年衡阳市环境空气质量及变化趋势进行分析。结果表明：2016年~2019年期间衡阳市环境空气质量良好，且呈逐步向好的趋势，主要污染物为PM_2.5，其它依次为O₃、PM₁₀、NO₂、CO和SO₂；衡阳市环境空气质量等级持续维持在II级；空间分布上，中心城区的县市区环境空气质量相对较差，远离中心城区的县市区相对较好；模糊数学评价法在环境空气主要污染物分析、空气质量等级分析、环境空气质量趋势分析和质量比较等方面具有广阔的应用前景。

Abstract: In order to understand the application prospect of fuzzy mathematics evaluation method in ambi-ent air quality assessment, by using the fuzzy mathematics evaluation method to analyze the am-bient air quality and trend of the change in Hengyang City from 2016 to 2019. The results show that: during 2016-2019, the ambient air quality of Hengyang City is good, and the trend is gradually im-proving. The main pollutant is PM_2.5, and the others are O₃, PM₁₀, NO₂, CO and SO₂ in turn. The am-bient air quality level of Hengyang City continued to maintain at level II; In terms of spatial distri-bution, the ambient air quality of counties and urban areas in the central urban area is relatively poor, while that far away from the central urban area is relatively good; the fuzzy mathematics evaluation method has broad application prospect on used in the analysis of main air pollutants, air quality grade, the trend of ambient air quality change and ambient air quality comparison.