2015-2018年衡阳市城区环境空气污染特征分析

Analysis of Air Pollution Characteristics in Urban Area of Hengyang from 2015 to 2018

本文利用2015~2018年衡阳市城区空气质量监测数据,分析环境空气污染特征及变化趋势。研究结果表明:2015~2018年衡阳市城区环境空气以PM2.5、PM10、O3污染为主,其中PM2.5和PM10年均值浓度呈下降趋势,O3年均值浓度呈不规则波动变化;年内时空变化上,O3呈现夏、秋季浓度高和冬、春季浓度低的特点,PM2.5和PM10呈现出夏季浓度低、冬季浓度高的特点。针对衡阳市空气污染物特征,提出了衡阳市城区空气质量改善的对策建议。

The air quality monitoring data of Hengyang from 2015 to 2018 were used to analyze the characteristics and change trend of environmental air pollution.The results show that the main air pollutants are PM2.5,PM10 and O3 in Hengyang in from 2015 to 2018,the average concentrations of PM2.5 and PM10 are on the decline,the average concentration of O3 is on irregular fluctuations change.In terms of spatial and temporal changes within the year,high concentration O3 present in summer and autumn,and low concentration in winter and spring.While PM2.5 and PM10 showed the low concentration in summer and high concentration in winter.In view of the characteristics of air pollutants in Hengyang,the countermeasures and suggestions for improving air quality in urban areas are provided.