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代表：张哲（兰州西北中学）国家:加拿大部门：UN-CHE治理雾霾天气及其引发的危害的国际间合作Hazeisacombinationoffogandhaze,includingsulfurdioxide,nitrogenoxidesandparticulatematterofthreemaincomponents,themainharmhumanthroat,lungsandeyesandrespiratorysystem,cardiovasculardisease.Theresistancetoairsystemafterspecialtreatmentsystem,whichcanbetoxicandharmfulgasapowerfulfilterintheair,suchasautomobileexhaust,sulfurdioxide,nitrogenoxides,industrialwastegasandairsmell,highpurifyingrateof99.97%forparticulatematter,guaranteeindoorairfresh,cleanandhealthybody,alsoahealthybreathingenvironment.Soweneedtoworktogethertofacetheproblemofhaze.OnJune5,1972~16,theUnitedNationsheldaconferenceonthehumanenvironmentintheSwedishcapitalStockholm.Thisisthefirsttimeinhumanhistoryoftheprotectionofthehumanenvironmentintheworldwithinthescopeoftheconference.Atameetingofthenational113,atotalofmorethan1300delegates.Inadditiontothegovernmentdelegation,andfolkscientists,scholarsparticipate.Themeetingdiscussedenvironmentalissuesintheworldtoday,makescountermeasureandmeasure.Beforethemeeting,theUnitedNationsConferenceonthehumanenvironmentsecretaryMorrisJStrongcommissionedbythe58countriesofthe152scientificandintellectualcirclesformedalargecommission,byDr.ReneDubosservedasexpertconsultantteam,draftedanonpositivereport-onlyoneearthforthegeneralassembly.ThemeetingproposedenvironmentalprotectionsloganXiangbianworld:thereisonlyoneearth!Themeetingafter12daysofdiscussion,andannouncedtheUNConferenceonthehumanenvironmentdeclarationfamous(DeclarationofUnitedNationsConferenceonHumanEnvironment),referredtoasthehumanenvironmentdeclaration)andhas109suggestionsofprotectingtheglobalenvironmentplanofaction,calledonthegovernmentandpeopleofallcountriestosafeguardandimprovethehumanenvironment,forthebenefitofallthepeople,thebenefitoffuturegenerationstogether.CanadapercubicmeterofaircontainingPM10particles13micrograms,airqualitygoodbehindEstoniaandMauritius.EstoniaandMauritiustheaveragePM10particlespercubicmeterofaircontentwere11mgand12mg.AccordingtotheWHOadvice,theaveragePM10particlecontentofanareashouldnotexceed20microgramspercubicmetre.Atpresent,theworldonlyafewcityreachedthisstandard.WHOpointedout,whetherindevelopedordevelopingcountries,theimpactonairqualityofseveralfactorsincludingmotorvehiclesrunningthelargest,forcookingandheatingtowoodburning,coalandbiomassfuelcombustionandthermalpowerplantoperation.Datashows,airqualityrankedcountriesmostbenefitedfromlowerpopulationdensity,excellentweatherconditionsandstrictairpollutioncontrolmeasures.Whatweshoulddonowistomaintainthissituation,andhelptheneighboringcountriestoestablishabetterenvironment.Now,IhopeIcanwithsomeforatmosphericenvironmentalprotectionagoodnationalcooperationandjointogethertohelpcountriessuchasChinaneedshelp.