北京市近年来大气颗粒物污染水平变化规律  

Variation of Pollution of Inhalable Particles in Beijing over Recent Years

作　　者：刘君霞[1] 邵龙义[1] 周林[1] 王静[1] 王建英[1] 

机构地区：[1]中国矿业大学(北京)地球科学与测绘工程学院,北京100083

出　　处：《北京工业职业技术学院学报》2010年第3期16-21,共6页Journal of Beijing Polytechnic College

基　　金：教育部科技创新工程重大项目培育资金项目;项目编号:705022;高等学校博士学科点专项科研基金项目;项目编号:20070290007

摘　　要：北京市大气颗粒物的污染状况一直是社会各界关心的话题。以2001年3月-2009年2月空气质量日报数据为依据,分析了近年来北京市大气颗粒物的质量浓度变化规律和空气质量等级的变化特征。结果表明:2001-2008年间,北京市环境空气质量总体上趋于好转;好于Ⅱ级天气的天数上升,低于Ⅲ级天数降低;冬季和春季空气质量比夏季和秋季差;好于Ⅱ级的天气占总天数的比例在夏季较高,秋季和冬季的比例差不多,春季最低。The pollution of air particles of Beijing is the focus of the community.This paper uses the data of March 2001 to February 2009 to study the variation of mass concentration and the degree of air quality.The results show that the air quality of Beijing is improving.The number days above degree Ⅱ has increased and that of days below degree Ⅲ has dropped.The air quality of winter and spring is worse than that of summer and autumn.The ratio of days of above degree Ⅱ is the highest in summer,and that of autumn and winter is nearly the same,and that of spring is the lowest.

关 键 词：大气颗粒物 质量浓度 空气质量等级 

分 类 号：X513[环境科学与工程—环境工程]