摘要
本文对2014—2016年拉萨市6种空气污染物SO_2、NO_2、PM_(10)、PM_(2.5)、CO、O_3的浓度变化进行了分析和评估。结果表明:(1)拉萨市区大气污染物以PM_(10)为主,其次是O_3;(2)拉萨市区大气环境中SO_2、CO的含量逐年下降,但是,NO_2含量逐年上升;(3)拉萨市大气环境中的PM_(2.5)与PM_(10)比值明显偏低,表明拉萨市大气环境质量主要的影响因素为自然因素。
In this paper,the monitoring results and trends of six air pollutants including SO2,NO2,PM10,PM2.5,CO,O3 in Lhasa from 2014 to 2016 are analyzed and evaluated.In addition,the main factors affecting the quality of Lhasa's atmospheric environment are also discussed.The results are as follows:(1)the main pollutants in the urban area of Lhasa were mainly PM10,followed by O3;(2)the content of SO2 and CO in the atmospheric environment decreased year by year during the observation period;however,the content of NO2 in the atmospheric environment over Lhasa showed a trend of increasing year by year during these three years;(3)the ratio of PM2.5/PM10 in the atmospheric environment of Lhasa was obviously low,indicating that the main influencing factors of atmospheric environmental quality in Lhasa are natural factors.
作者
白永飞
吕学斌
平措
张成
布多
Bai Yongfei;Lyu Xuebin;Ping Cuo;Zhang Cheng;Bu Duo(Environmental Institute of Tibet University,Lhasa 850000)
出处
《气象科技》
2018年第6期1274-1279,1286,共7页
Meteorological Science and Technology
基金
国家自然科学基金项目(20767005
21677116)
973计划前期研究专项课题(2014CB460612)资助
关键词
拉萨市
大气环境质量
AQI
Lhasa
atmosphere environmental quality
AQI
