2017年-2021年开州区城区环境空气质量时空分布特征及影响因素研究  

Spatio-temporal Characteristics of Air Quality and Influencing Factors in Kaizhou District from 2017~2021

作　　者：周思愿 雷振宇 王锐 刘煌卿 Zhou Siyuan;Lei Zhenyu;Wang Rui;Liu Huangqing(Kaizhou District Environmental Monitoring Station of Chongqing,Chongqing 405400,China)

机构地区：[1]重庆市开州区生态环境监测站,重庆405400

出　　处：《环境科学与管理》2023年第9期66-70,共5页Environmental Science and Management

摘　　要：研究分析了开州区城区2017年-2021年环境空气质量及6项污染物指标变化情况,并总结归纳了其大气污染特征。结果表明:开州区城区环境空气质量整体明显改善,各指标的年均值均满足二级以上标准;冬季受逆温天气影响,城市空气质量指数(AQI)显著升高,7月、8月份臭氧成为影响空气质量的主要因素;通过分别建立相关污染物与降雨量的相关分析发现,降雨量对可吸入颗粒物和细颗粒物清除作用明显,而对臭氧无明显清除作用;受生产生活影响,环境空气指标呈现特征变化趋势。This paper mainly studies the changes of ambient air quality and six pollutant indicators in the urban area of Kaizhou District from 2017~2021,and summarized their air pollution characteristics.The results show that the ambient air quality in the urban area of Kaizhou District is significantly improved,and the annual average value of each index meets the standard above grade II.Affected by the inversion of temperature weather in winter,the urban air quality index(AQI)increased significantly,and ozone became the main factor affecting air quality in July and August.By establishing the correlation analysis of related pollutants and rainfall,it is found that rainfall has obvious effect on the removal of inhalable particulate matter and fine particulate matter,but no obvious removal effect on ozone.Affected by production and life,the ambient air index shows a characteristic change trend.

关 键 词：开州区 空气质量 时空分布 影响因素 

分 类 号：X511[环境科学与工程—环境工程]