重庆市生态保护发展区域大气环境质量研究

摘要

In order to learn the atmospheric environment quality in ecological protection areas of Chongqing, the atmosphere automatic observation site data was analyzed in five districts and counties.The results showed that: the atmospheric environment concentration of SO2, PM2.5, PM10, NO2 and O3reached the secondary standard of "Ambient Air Quality Standard" (GB 3095-2012) in five study areas.However, there were differences between major atmospheric pollutants in five districts and counties.Correlation analysis results showed that there were different degrees of correlation between the major atmospheric pollutants and meteorological parameters in five observation sites, and the impact of meteorological parameters on air pollution factors was bigger.Principal component analysis results showed that the wind was a separate component in the meteorological parameters, temperature and humidity were basically in one component, and O3 and other pollution factors were not in the same component category.Cluster analysis results showed that the atmospheric monitoring parameters were divided into five types in Shizhu County and Qianjiang District, four types in Youyang County, and six types in Pengshui County and Xiushan County.But PM10 and PM2.5 belonged to the same category in five study areas, and the clustering difference between other parameters was considerably large.%为详细掌握重庆市生态保护发展区域的大气环境质量状况,选择五个区县大气自动观测站点数据进行分析研究,结果表明:研究区域五个区域城市大气环境中的SO2、PM2.5、PM10、NO2和O3均满足《环境空气质量标准》(GB 3095-2012)中二级标准,但五个区县城市的主要大气污染物差异较大.相关性分析表明,研究区域五个观测站点大气中主要污染因子与气象参数呈现了不同程度的相关性,导致了大气污染因子受气象参数影响也较大.主成分分析结果表明,研究区域气象参数中风向均单独为一个组分,温度、湿度基本归为一个主分,O3与其它污染因子均不再是同一个组分类别.聚类分析结果表明,石柱县和黔江区大气监测参数可分为5类,酉阳县为4类,彭水县和秀山县为6类,但所有研究区域大气中的PM10和PM2.5均属于同一类别,而其他参数之间的聚类差别较大.