2021年徐州市环境空气质量评价

Assessment of Ambient Air Quality in Xuzhou City in 2021

本文通过分析2021年徐州市空气质量数据,开展环境空气质量评价,解析细颗粒物(PM_(2.5))和O_(3)的月变化特征和来源。与2020年和2016年空气质量数据比较,2021年徐州市各项主要污染物浓度均同比下降,优良天数同比上升。与2021年江苏省内城市对比,徐州市PM_(2.5)浓度降幅和空气优良率升幅均居第一。2021年,徐州市PM_(2.5)、O_(3)均具有明显的月变化特征。

By analyzing the air quality data of Xuzhou City in 2021,this paper carries out the ambient air quality assessment and analyzes the monthly variation characteristics and sources of fine particulate matter(PM_(2.5))and O_(3).Compared with the air quality data of 2020 and 2016,the concentrations of all major pollutants in Xuzhou City in 2021 decreased year on year,and the number of excellent days increased year on year.Compared with the cities in Jiangsu Province in 2021,Xuzhou City ranked first in terms of PM_(2.5)concentration reduction and air quality rate increase.In 2021,the PM_(2.5)and O_(3)in Xuzhou City have obvious monthly variation characteristics.