文档介绍：Intherecentyears,Theword“smog”,increasedrespiratoryandrelateddiseases,,Thefogisanaturalweatherphenomenon,overallnon-toxicharmless,butHaze’sthecoresubstanceoffloatingintheair,smoke,dustandothersubstances,it’’sformationmainlyisman-madepollutionfortheenvironment,coupledwiththenaturalconditionssuchaslowtemperature,,Asthegrowthoftheurbanpopulationandindustrialdevelopment,Asurgeinmotorvehicles,Pollutantsandsuspendedsolidsincreased,directlyledtopoorvisibility,Inadditiontothemeteorologicalconditions,industrialproduction,automotiveexhaustemission,otherparticlesconcentrationincreasedintheatmospherecausedbyWinterheatingburningcoal,,It’ssensitivetometeorologicalconditions,Airqualitycanamounttomarkwhendiffusionconditionsisbetter,butWhenunderadverseweatherconditions,,wecanknowit’snotonlyBeijing,evenNanjingandshanghaihavebeenseriouslypolluted,Therefore,thegovernan