2014～2018年上海市金山区环境空气质量变化分析

Variation Trend of Air Quality of Jinshan District in 2014～2018

依据2014～2018年上海市金山区环境空气自动监测站监测数据,采用空气质量综合指数、等标污染负荷系数法及Daniel的Spearman秩相关系数法对金山区环境空气质量污染水平、污染特征及变化趋势进行分析。分析结果表明:近五年来该地区污染物浓度总体呈下降趋势,至2018年各类污染物浓度基本达到国家二级标准。其中PM_(2.5)为主要污染物;O_3污染贡献度逐年增大,是2018年影响该地区环境空气质量的主要污染物之一。

Based on the monitoring data from 2014 to 2018 in Jinshan District, the air quality comprehensive pollution index method, the equal standard pollution load evaluation method and Spearman rank correlation coefficient method were used to analyze the pollution level, the pollution characteristics, the variation trend of ambient air quality in Jinshan District. The results show: The concentrations of pollutants were declined in the past five years, and had been up to national secondary standards in 2018. PM2.5 was the prominent pollutant in the ambient air environment of Jinshan District. In 2018, Ozone has became one of the primary pollutants because of the raising contribution to pollution.