2009—2013年宜春市大气污染特征及影响因素分析  

Characteristics and Factors Influencing Atmospheric Pollutants Variation in Yichun City in 2009—2013

作　　者：李丽娜[1] 李鹰 吴明明[1] 刘沐生[1] 吕爱清[1] 刘炜龙 

机构地区：[1]宜春学院生命科学与资源环境学院 [2]宜春市气象局

出　　处：《环境卫生学杂志》2015年第2期94-98,共5页JOURNAL OF ENVIRONMENTAL HYGIENE

基　　金：江西省科技计划项目(20133BBG70016)

摘　　要：目的了解宜春市当前空气质量状况,包括主要污染物及污染物的时间变化特征,预测宜春市空气质量未来的发展趋势,并探究其影响因素。方法利用空气综合污染指数和污染负荷系数法对宜春市2009—2013年大气日报数据进行处理和分析。结果 5年内,宜春市空气质量均在Ⅱ级以上,并以Ⅱ级为主,3种污染指标(PM10、NO2、SO2)里,PM10为主要污染指标,对综合污染指数贡献最大;各污染物污染负荷系数PM10>NO2>SO2;空气污染指数呈现季节性、年际变化趋势,如冬季高、夏季低,年际变化平缓,逐年呈不显著递增趋势。结论宜春市空气质量有逐渐变差的趋势,其主要影响因素为近几年迅速增加的机动车排放大量尾气、建筑业的迅猛发展等,有必要进行PM2.5站点的建设,以掌握宜春空气质量细颗粒物的动态变化。Objectives To understand the current air quality including main pollutants and their spatial and temporal variations in Yiehun city, to predict the future trends of air quality, and to explore its influencing factors. Methods Using a comprehensive pollution index and combined pollution load coefficient to process and analyze the daily atmospheric data of Yiehun city in 2009--2013. Results The air quality of Yichun city in recent five years for most days was in Grade I1 or better. Within the three pollution indexes（PM10, NO2 and SO2） examined, PM10 was considered as the main pollutant and gave the largest contribution to the comprehensive pollution index. The rank of combined pollution load coefficient was ： PM10 〉 SO2 〉 NO2 ; there was a trend of seasonal and annual change in air pollution indexes, such as high in winter, low in summer and gentle in annual variation, but an insig- nificantly increasing trend year by year. Conclusions The air quality in Yiehun city became worse in recent five years, the main reasons were the emissions of exhausted gas from motor vehicles and the rapid development of building industries, etc. Setting observational sites for PM2.5 might be needed in order to grasp the dynamic change of air quality on fine particles in Yichun.

关 键 词：空气污染综合指数 空气质量 影响因素 变化趋势 宜春市 

分 类 号：X51[环境科学与工程—环境工程]