摘要
为了分析太原市空气质量现状、变化规律和治理成效,通过综合指数法、Kriging插值法、聚类分析、斯皮尔曼相关系数法研究2016~2020年太原市空气质量变化,分析气象因素对空气质量的影响。结果表明:2016~2020年太原市空气质量综合指数总体呈下降趋势,重污染天数减少;AQI逐月变化近似呈“W”型变化,除O_(3)外其他污染物浓度呈“∨”型变化;NO_(2)小时浓度变化呈“单谷”型,O_(3)呈“单峰单谷”型,AQI和其他污染物呈“双峰双谷”型;污染物浓度空间变化主要呈“南高北低、东高西低、中心城区高”的特点;除O_(3)外,全年其它五种污染物与温度、风速均呈显著负相关,与大气压则呈显著正相关。分析表明:太原市空气质量逐年好转,污染物有明显的时空分布,空气质量与气象因素关系密切;应加强颗粒物和O_(3)协同治理,建立区域联防联控机制,加强采暖期重污染天气应急工作。
In order to analyze the current situation,change rule and control effect of air quality in Taiyuan,this paper studied air quality changes in Taiyuan during the period of 2016~2020 through the comprehensive index method,Kriging interpolation method,cluster analysis and Spearman correlation coefficient method,and the impact of meteorological factors on air quality was analyzed.The results showed that the comprehensive index of air quality in Taiyuan presented a downward trend from 2016 to 2020,and the number of heavy pollution days dropped.The monthly-average of AQI was similar to the"W"shape change rule,and monthly-average concentration of other pollutants except O_(3)was"V"shape change rule.Hourly values of N0_(2)showed"single valley"pattern,and hourly values of O_(3)showed Msingle peak and single valleyM pattern,hourly values of AQI and other air pollutants showed"double peak and double valley"pattern.The spatial variation of pollutant concentration is mainly characterized by"high in the south and low in the north,high in the east and low in the west,and high in the central urban area".Except O_(3),the other five pollutants showed significant negative correlation with temperature,and wind speed,and significant positive correlation with atmospheric pressure.The analysis showed that the air quality of Taiyuan has improved year by year,pollutants have obvious spatio-temporal distribution,air quality is closely related to meteorological factors.The collaborative governance of particulate matter and O_(3)should be strengthened,establish regional joint prevention and control mechanism,and strengthen the emergency work of heavily polluted weather during heating period.
作者
姜洪进
段嘉瑞
马祥爱
JANG Hong-jin;DUAN Jia-rui;MA Xiang-ai(College of Resources&Environment,Shanxi Agricultural University,Taiyuan 030031,China;Taiyuan Xiaojing Yu Street Office,Taiyuan 030024,China)
出处
《四川环境》
2023年第2期83-91,共9页
Sichuan Environment
基金
山西省重点实验室合作项目(K482011182)。
关键词
十三五
空气质量
太原市
The 13th Five-Year plan
air quality
Taiyuan
