GreenHouse温室效应介绍及其危害英文

GreenhouseEffect1122011李蕊1122012李润怡Whatisgreenhouse?Agreenhouse(alsocalledaglasshouse)isabuildinginwhichplantsaregrown.Agreenhouseisastructuralbuildingwithdifferenttypesofcoveringmaterials,suchasaglassorplasticroofandfrequentlyglassorplasticwalls;itheatsupbecauseincomingvisiblesolarradiationfromthesunisabsorbedbyplants,soil,andotherthingsinsidethebuilding.Airwarmedbytheheatfromhotinteriorsurfacesisretainedinthebuildingbytheroofandwall.Greenhousesallowforgreatercontroloverthegrowingenvironmentofplants.Dependinguponthetechnicalspecificationofagreenhouse,keyfactorswhichmaybecontrolledincludetemperature,levelsoflightandshade,irrigation,fertilizerapplication,andatmospherichumidity.2kindsofgreenhouseeffect?GreenhouseeffectNaturalgreenhouseeffectMan-madegreenhouseeffectessentialharmfulGoblewarmingWhatisgreenhouseeffect?naturalDefinition:Theso-calledgreenhouseeffectisshort-wavesolarradiationthroughtheatmosphereintotheground,andwarmingthegroundafterthelengthofradiationbeingreleasedintheatmospherebyabsorbingcarbondioxideandothersubstances,therebycreatingtheeffectofatmosphericwarming,justlikethegreenhouse’seffectonplants.greenhousegas:•Carbondioxideisnottheonlygreenhousegas.•Othergases,suchasmethane(CH4)andnitrous(氮的、硝的）oxide(NO),areevenstrongerinfrared（红外线的）absorbers.IftheEarthhadnogreenhouseeffect,itsaveragesurfacetemperaturewouldbeverylowofabout-18°Cratherthanthecomfortable15°Cfoundtoday.ThenaturalgreenhouseeffectisessentialformaintainingthepropertemperatureneededtosustainlifeonEarth.Whatisgreenhouseeffect?Man-madeHowDoWeHumanBeingsContributetotheGreenhouseEffect?WhereDoWeReleaseGreenhouseGases?Burningnaturalgasandcoalindailylife.TransportationGasolineforautomobileenginesraisesthelevelofcarbondioxideintheatmosphere.Manyfactoriesproducelong-lastingindustrialgases,whichcontributessignificantlytotheenhancedgreenhouseeffectandglobalwarmingthatiscurrentlyunderway.DeforestationPopulationgrowthGlobalwarmingiswhentheearthheatsup(thetemperaturerises).Ithappenswhengreenhousegases(carbondioxide,watervapor,nitrousoxide,andmethane)trapheatandlightfromthesunintheearth’satmosphere,whichincreasesthetemperature.SeaLevelRise•Bytheyear2100(andsomeassoonas2030),wouldflood15percentofEgypt（埃及）,and12percentofBangladesh(孟加拉国).TheMaldives(马尔代夫）intheIndianOceanwouldalmostcompletelydisappear.ExtremeweatherWatershortageEcosystemswillchangeDiseasesWhatshouldwedo:1.UsepublictransportsDriveLessandDriveSmartFeweremissions&savinggasoline2.ForestationAbsorbcarbon,giveoffoxygen3.Reduce,Reuse,RecycleReducewaste,save2,400poundsofcarbondioxide4.ChangeaLightBulbCFL(compactfluorescentlight)Last10timeslonger,uselessenergy5.BuyEnergy-EfficientProducts6.UseLessHotWater7.UsetheOffSwitch8.UseLessHeatandAirConditioningThankYou!