GREENHOUSE温室效应介绍及其危害英文_化学_自然科学_专业资料.ppt

GreenhouseEffectE肉1122012李涧总L吴u2thatcausesgreenhouSeeffectEEEreaS0OnEwhatistheimpactofeeffectandglobEEWhatisgreenhouse?Agreenhouse(alsocalledaglasshouse)isabuildinginwhichplantsaregrownt.Agreenhouseisastructuralbuildingwithdiflerenttypesofcoveringmaterials,suchasaglassorplasticroofandfrequentlyglassorplasticwallsiitheatsupbecauseincomingvisiblesolarradiationfromthesunisabsorbedbyplants,soilandotherthingsinsidethebuilding.AirwarmedbytheheatfromhotinteriorsurfacesisretainedinthebuildingbytheroofandwalLGreenhousesallowforgreatercontroloverthegrowingenvironmentofplants.Dependinguponthetechnicalspecificationofagreenhouse,keyfactorswhichmaybecontrolledincludetemperature,levelsoflightandshade,irgation,fertiizerapplication,andatmospherichumidity.2kindsofgreenhouseeffect?Whatisnaturalgreenhouseeffect?Definition:温室气伟帕史收地表长泷辆寺,俊大气暄,与“滋宣“作用真伯。

者无温室应“,地球表面平圳渥度是“18C而非顿在Theso-calledgreenhouseeffectisshort-wavesolarradiationthroughtheatmosphereintotheground,andwarmingthegroundafterthelengthofradiationbeingreleasedintheatmospherebyabsorbingcarbondioxideandothersubstances,therebycreatingtheeffectofatmosphericwarming,justlikethegreenhouse「seffectonplants.greenhousegas:Carbondioxideisnottheonlygreenhousegas.Othergases,suchasmethane(CH4)andnitrous(氯的、硝的)oxide(NOj,areevenstrongerinfrared〔红外线的)absorbers.IftheEarthhadnogreenhouseeffectitsaveragesurfacetemperaturewouldbeverylowofabout-18“Cratherthanthecomfortable15“Cfoundtoday.ThenaturalgreenhouseeffectisessentialformaintainingthepropertemperatureneededtosustainlieonEarth.。