南疆最大城市2018―2022年环境空气质量变化特征分析

段秀蓉; 仲军梅; 李刚; 韩晓越; 王江红

doi:10.13568/j.cnki.651094.651316.2024.02.26.0002

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南疆最大城市2018―2022年环境空气质量变化特征分析

更新时间：2026-01-21

- 南疆最大城市2018―2022年环境空气质量变化特征分析
- Journal of Xinjiang University (Natural Science Edition in Chinese and English) Vol. 41, Issue 4, Pages: 479-487(2024)
- 作者机构：
  
  1. 新疆维吾尔自治区巴音郭楞蒙古自治州博斯腾湖科学研究所
  2. 中国环境科学研究院环境基准与风险评估国家重点实验室
  3. 新疆维吾尔自治区巴音郭楞生态环境监测站
- 作者简介：
- 基金信息：
- DOI：10.13568/j.cnki.651094.651316.2024.02.26.0002
  CLC： X51
- Published：2024
- 稿件说明：
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[1]段秀蓉,仲军梅,李刚,等.南疆最大城市2018―2022年环境空气质量变化特征分析[J].新疆大学学报(自然科学版中英文),2024,41(04):479-487+496.
[1]段秀蓉,仲军梅,李刚,等.南疆最大城市2018―2022年环境空气质量变化特征分析[J].新疆大学学报(自然科学版中英文),2024,41(04):479-487+496. DOI： 10.13568/j.cnki.651094.651316.2024.02.26.0002.

DOI：10.13568/j.cnki.651094.651316.2024.02.26.0002.

摘要

基于2018―2022年南疆最大城市(库尔勒市)六项大气污染物监测数据(PM2.5、PM10、SO2、NO2、CO和O3)，分析了库尔勒市近五年环境空气质量变化特征及其污染物浓度水平．结果表明：2018―2022年库尔勒市空气质量总体逐年向好，空气质量优良天数由2018年的223 d增长到2022年的250 d，增加了27 d；达标率由2018年的62.5%增长到2022年的68.5%，增长了6.0%，重度及以上污染天数降低了23.3%．环境空气质量指数(Air Quality Index

AQI)降低了5.4%，五年的AQI值均高于100，空气质量处于轻度污染水平．常规六项污染物中SO2和CO的浓度呈逐年下降趋势，NO2浓度年际变化不明显，但SO2、NO2、CO的年均值和季节均值均优于国家环境空气污染物浓度限值一级标准．O3的年均值优于国家环境空气污染物浓度限值一级标准，但O3四季的浓度年际变化均呈上升趋势，且2021年和2022年夏季和秋季浓度值均高于100μg·m-3.2018―2022年库尔勒市PM2.5呈下降趋势，但PM10变化不明显，PM10各年浓度值均大于国家环境空气污染物浓度限值二级标准(70μg·m-3)2倍以上，说明库尔勒市近几年PM10污染非常严重．此外，每年1月PM2.5/PM10最高、3月PM2.5/PM10最低，说明1月至3月粒径大于2.5μm的颗粒物浓度逐渐增加，这主要是因为库尔勒市每年春季受沙尘天气的影响．

Abstract

The characteristics of ambient air quality and the pollutant concentration level of Korla city

the largest city in southern Xinjiang is analyzed by the monitoring data of PM2.5

PM10

SO2

NO2

CO and O3 concentration from 2018 to 2022. The results showed that the air quality of Korla city has been improving from2018 to 2022. The number of days with excellent air quality has increased from 223 days in 2018 to 250 days in 2022

and an increase of 27 days. The air quality compliance rate has increased from 62.5% in 2018 to 68.5% in 2022

and an increase of 6.0%. The number of days with severe or above pollution has decreased by 23.3%. The air quality index(AQI) has decreased by 5.4%

but the AQI values for five years are all above 100

indicating that average annual air quality in Korla city is at a mild pollution level. The concentrations of SO2 and CO show a decreasing trend year by year

and the NO2 concentration does not change significantly

but the average annual and seasonal values of SO2

NO2 and CO are superior to the first level standard of national ambient air pollutant concentration limit. The annual average value of O3 is lower than the first level standard of national ambient air pollutant concentration limit

but the interannual variation of O3 in all four seasons shows an upward trend

and the O3 concentrations in the summer and autumn of 2021 and 2022 are all higher than 100 μg·m-3. From 2018 to 2022

the concentration of PM2.5in Korla city shows a downward trend

PM10 does not change significantly.However

the annual concentration of PM10is twice higher than the second level standard of national ambient air pollutant concentration limit(70 μg·m-3)

indicating that the PM10pollution in Korla city is very serious in recent years. In addition

the PM2.5/PM10 ratio is highest in January and lowest in March every year

indicating that the concentration of particulate matter with a diameter greater than 2.5 μm gradually increases from January to March. This is mainly because Korla city is affected by sandstorms every spring.

关键词

Keywords

references

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