2019年－2023年聊城市 PM_2.5 和0₃ 时空分布特征及健康风险研究

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文章编号：1674-6139（2026）03-0128-05

中图分类号：X831文献标志码：B

Spatial and TemporalDistribution Characteristicsand Health Risk Analysis of PM2.5 and O3 in Liaocheng City from 2019 to 2023

Li Jing1 ， Jiang Na1 ，Meng Jingjing²

（1.Liaocheng Ecological & Environmental Monitoring Centre of Shandong Province，Liaocheng 252Ooo，China; 2.School of Geography and Environment，Liaocheng University，Liaocheng 252OOo，China）

Abstract：BasedontheanalysisofirqualitydatainLiaochengCityfrom2O19to2O23，itisshownthatintermsoftime，theaual average concentration of PM2，5 generally decreased but rebounded in 2O23．The pollution was the most severe in winter，and the hourly concentration of PM2.5 showeda single-peak pattern，with theminimumvalue occurring around17：Oo.Theconcentrationof90th from （204号 O3 to8Hfirstdecreasedandthenincreased.Thepolutionwas mostprominentinsummerandshowedanupward trend inspringandautumn.The peak concentration of 03 hour was around 16：00.Spatially， O3 pollution is distributed in a“corest-periphery”pattern（with the most severe pollution in Dongchangfu District），and PM2.5 pollution increases from east to west（with the most severe pollution in Shen County）.The excess risks caused by 03 and PM2.5 inhealth risks decreased first and then increased，but the upward trend of 03 slowed down.SpearanaalysisindcatedtatteolutantsidnotdreasesignificantlyItisesarystrengentecoodatedtreat ment of VOCs/NOx and regional joint prevention and control.

Keywords：Liaocheng; PM2.5 ： 03 ；spatiotemporal distribution characteristics；health risks

前言

自中国实施《大气污染防治行动计划》以来，全国空气环境质量得到显著改善，细颗粒物（ PM2.5 ）浓度及超标天数逐渐降低，但浓度仍显著高于世界卫生组织标准（ 10μg/m3 ），同时臭氧 （03 ）污染问题日益突出，目前 PM2.5 和 O3 已经成为了环境空气中的主要污染物，有研究表明 PM2.5 能够通过人体上呼吸道组织直接进入肺泡， O3 污染会危害到人体的呼吸系统和心血管系统[1]，应引起人们的高度重视。（剩余4893字）