2016年春节期间江苏省空气质量变化特征  

Characteristic of air quality in Jiangsu Province during the 2016 Spring Festival

作　　者：刘丽丽[1] 毛静涛[1] 李建国[1] 

机构地区：[1]江苏师范大学地理测绘与城乡规划学院,江苏徐州221116

出　　处：《江苏师范大学学报（自然科学版）》2016年第4期55-61,共7页Journal of Jiangsu Normal University：Natural Science Edition

基　　金：江苏师范大学博士科研启动基金(15XLR017);江苏高校优势学科建设工程资助项目

摘　　要：春节期间的空气质量状况一直备受关注.江苏作为典型南北气候过渡地带,其春节期间空气质量的状况与过程对于研究我国东部季风区春节期间污染空气传导与迁移过程具有重要意义.利用江苏省34个空气自动监测站的逐时数据,研究2016年2月1-25日空气质量指数（AQI）、PM2.5、PM10、SO2、NO2和O3的变化过程.结果表明：全省AQI均值为101,属轻度污染;春节前和节间的11d（2-12日）是空气污染最为严重的时段,之后逐渐好转;宿迁、泰州和南京分别是苏北、苏中和苏南空气污染最为严重的城市;沿海城市总体表现好于内地城市.正常天气条件下全省的空气污染周期一般为3d;大部分夜晚的空气质量比白天差,特别是7日24：00.PM2.5和PM10是江苏大气主要的超标污染物,鞭炮燃放是江苏春节期间空气质量下降的主要因素,且其对空气中PM2.5的贡献要稍大于PM10.江苏AQI、PM2.5和PM10总体上呈北高南低的趋势,而O3、SO2和NO2则呈南高北低的趋势.为改善空气质量,应加强通风廊道建设和人为源SO2、NO2和O3前提物排放管控.In China,the air quality impacted by the intensive use of fireworks has been a growing concern during the Spring Festival.Lying in the transition zone of climate from south to north,the air quality in Jiangsu Province will affect the polluted airmass transportation in East China monsoon region during the Spring Festival.In this study,hourly observational data from a total of 34 automatic air-quality monitoring stations in Jiangsu Province from February 1 to 25,2016 are collected.A total of five air-quality indices（i.e.,PM＊（2.5）,PM10,SO2,NO2,and O3）are analyzed.The results indicate that Jiangsus air quality belongs to medium contamination（AQI=101）.Before and during the Spring Festival（February 2-12）,the worst air pollution occurrs.Subsequently,the air quality tends to improve.Spatially,Suqian,Taizhou,and Nanjing are the three of the most seriously polluted cities in north,middle,and south of Jiangsu,respectively.The air quality in the coastal cities is better than that in inland.Under the normal atmosphere condition,the air pollution processes generally persist for approximately three days.The air quality at night is worse than that in the daytime,especially at 24：00of February 7.Meanwhile,PM2.5and PM10 are the major sources causing air pollution,and cracker firing is the major reason for the high PM2.5and PM10 values.The atmospheric PM2.5and PM10 gradually decreases from north to south Jiangsu in general,while O3,SO2,and NO2 exhibit an opposite pattern.The construction of ventilation corridors and regulation of anthropogenic SO2,NO2,and O3 should be carried out to improve the air quality.

关 键 词：春节 AQI 空气污染物 时空变化 江苏 

分 类 号：X513[环境科学与工程—环境工程]