空气质量评价及影响因素分析研究 环境工程管理专业VIP专享VIP免费

沧州市空气质量评价及影响因素分析摘要目前我国的大气污染问题仍然严重，多种污染物的排放量居于全球首位。从全国的大气污染情况来看，河北省位于全国前列。沧州市是河北省重要的工业城市之一，为使其经济平稳快速的发展，做好大气污染的防控工作是必经之路。首先选取二氧化硫、二氧化氮和可吸入颗粒物为研究因子。这三种污染物的浓度数据都是通过中国空气质量在线监测分析平台获取得到的。根据三种污染物的季度、月份和年份的浓度变化状况，对空气质量进行了描述性统计分析，之后运用API指数评价、综合污染指数评价和模糊综合评价对沧州市空气质量进行了综合性评价，得出沧州市整体空气质量在逐渐改善。接着选取气温、相对湿度、风级作为影响空气质量的三个气象因素，根据Spearman秩相关系数和灰色关联度，分析了气象因素对三种污染物的相关性。最后，对沧州市空气质量进行了时间序列预测，得出2019年各月份的预测值，根据已知的实际值，得出模型的总体相对误差相对误差较小，说明预测效果较好。关键词：沧州市；空气质量评价；气象影响因素；时间序列预测AbstractAtpresent,theproblemofairpollutioninChinaisstillserious,andthedischargeofmanypollutantsranksfirstintheworld.Fromthenationalairpollutionsituation,HebeiProvinceisintheforefrontofthecountry.HandanisoneoftheimportantindustrialcitiesinHebeiProvince.Inordertomakeitseconomydevelopsteadilyandrapidly,itisnecessarytodoagoodjobinairpollutionpreventionandcontrol.Firstly,thepollutionfactorsofairqualityinHandanCityareselected.Sulfurdioxide,nitrogendioxideandinhalableparticulatematteraretakenastheresearchobjectsinthispaper.TheconcentrationdataofthesethreepollutantsareobtainedthroughChinaAirQualityOnlineMonitoringandAnalysisPlatform.Accordingtotheseasonal,monthlyandannualconcentrationchangesofthethreepollutants,thedescriptivestatisticalanalysisofairqualitywascarriedout.Then,thecomprehensiveairqualityofHandanwasevaluatedbyAPIindexevaluation,comprehensivepollutionindexevaluationandfuzzycomprehensiveevaluation.ItwasconcludedthattheoverallairqualityofHandanwasgraduallyimproving.Then,temperature,relativehumidityandwindlevelareselectedasthethreemeteorologicalfactorsaffectingairquality.AccordingtoSpearmanrankcorrelationcoefficientandgreycorrelationdegree,thecorrelationofmeteorologicalfactorstothethreepollutantsisanalyzed.Finally,theairqualityofHandancityisforecastedbytimeseries,andtheforecastvaluesofeachmonthin2019areobtained.Accordingtotheknownactualvalues,therelativeerroroftheoverallrelativeerrorofthemodelissmaller,whichshowsthatthepredictioneffectisbetter.Keywords：Handan;airqualityassessment;meteorologicalinfluencingfactors;timeseriesforecasting目录摘要....................................................................................................................................IAbstract...............................................................................................................................II第1章绪论.......................................................................................................................11.1研究背景...................................................................................................................11.2研究意义...................................................................................................................11.3国内外研究现状.......................................................................................................2第2章沧州市空气质量评价...............................................................................