摘要
基于2018~2022年南宁市6项大气污染物监测数据,对南宁市各污染物时空变化特征及影响因素进行了分析,结果表明:近5年期间,PM_(2.5)、PM_(10)、SO_(2)、NO_(2)、CO年平均浓度均呈下降趋势,季节上均呈冬季浓度高、夏季浓度低变化规律;O_(3)平均浓度浓度呈上升趋势,季节上呈夏季、秋季浓度高,冬季、春季浓度低规律;南宁城区环境空气污染以PM_(2.5)、O_(3)和NO_(2)为主,超标污染物超标频次大小排序为PM_(2.5)>O_(3)>NO_(2);南宁城区环境空气质量空间分布情况为:南宁城区东部、东南部的青秀区、五象新区、邕宁区综合指数较低,环境空气质量较好。
Based on the monitoring data of six air pollutants in Nanning from 2018 to 2022,the temporal and spatial variation characteristics and influencing factors of pollutants in Nanning were analyzed;The results show that in the past five years,the annual average concentrations of PM_(2.5),PM_(10),SO_(2),NO_(2),and CO have all shown a downward trend,and the seasonal changes are characterized by high concentrations in winter and low concentrations in summer;The average concentration of O_(3)shows an upward trend,with high concentrations in summer and autumn and low concentrations in winter and spring;The environmental air pollution in the urban area of Nanning is mainly PM_(2.5),O_(3)and NO_(2).The frequency of exceeding the standard for pollutants is ranked from more to less as PM_(2.5)>O_(3)>NO_(2);The spatial distribution of ambient air quality in Nanning urban area is as follows:the comprehensive index of Qingxiu District,Wuxiang New District and Yongning District in the east and southeast of Nanning urban areas is low,and the ambient air quality is good.
作者
黄远来
Huang Yuanlai(Guangxi Xingui Environmental Protection Technology Group Co.,Ltd,Nanning,Guangxi 530000,China)
出处
《绿色科技》
2023年第16期139-143,共5页
Journal of Green Science and Technology
关键词
南宁城区
空气质量
综合指数
时空变化
特征分析
Nanning urban areas
air quality
comprehensive index
temporal and spatial changes
feature analysis
