环境保护-59-屏南县环境空气质量变化趋势分析张书丽(宁德市屏南环境监测站,福建宁德352300)摘要:为巩固蓝天保卫战成果,不断提升环境空气质量,利用屏南县环境空气自动监测数据,采用空气质量综合指数、Spearman秩相关系数和污染负荷系数研究屏南县近五年环境空气质量变化趋势,结果表明:2017年至2021年,屏南县环境空气质量都达到《环境空气质量标准》(GB3095-2012)表1中的二级标准;环境空气质量综合指数逐年下降;优良天数比例总体呈现上升趋势,其中一级达标天数比例占达标天数的比例逐年上升,二级达标天数比例占达标天数的比例逐年下降,环境空气质量稳中向好。但随着气候条件的变化及社会经济的发展,巩固蓝天保卫战成果的任务艰巨,因此提出空气质量巩固对策措施。关键词:空气质量;变化趋势;分析中图分类号:TS5文献标志码:ADOI:10.20025/j.cnki.CN10-1679.2022-24-20TrendAnalysisofAmbientAirQualityinPingnanCountyZhangShuli(NingdePingnanEcologicalEnvironmentBureau,Ningde352300,China)Abstract:Inordertoconsolidatetheachievementsoftheblueskydefensecampaignandcontinuouslyimprovetheambientairquality,theairqualitycomprehensiveindex,SpearmanrankcorrelationcoefficientandpollutionloadcoefficientareusedtostudythechangetrendofambientairqualityinPingnanCountyinrecentfiveyearsbyusingtheambientairautomaticmonitoringdataofPingnanCounty.Theresultsshowthat:from2017to2021,theambientairqualityofPingnanCountymeetstheClassIIstandardinTable1oftheAmbientAirQualityStandard(GB3095-2012);Thecomprehensiveindexofambientairqualitydecreasesyearbyyear;Theproportionofexcellentdaysshowsanoverallupwardtrend,ofwhichtheproportionofthefirstleveluptostandarddaysisincreasingyearbyyear,andtheproportionofthesecondleveluptostandarddaysisdecreasingyearbyyear,andtheambientairqualityisstableandgood.However,withthechangeofclimateconditionsandthedevelopmentofsocialeconomy,thetaskofconsolidatingtheachievementsoftheblueskydefensewarisarduous.Therefore,countermeasuresforairqualityconsolidationareproposed.Keywords:airquality;changetrend;analysis打赢蓝天保卫战,是打好污染防治攻坚战的重中之重,事关人民日益增长的美好生活需要,事关全面建成小康社会,事关高质量发...