全球变暖英文演讲稿.docx

全球变暖英文演讲稿.docx

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全球变暖英文演讲稿

全球变暖英文演讲稿

　　篇一：

全球变暖英语演讲稿

　　èò±ˉó￠óY2.txt10óDá′￡éúü3ìéμˉéòì3éòàìì￡óDá′￡1μ￥éòYò3éòoè￡óDá′￡àéòà·3éú2μê¨￡GlobalWarming

　　Thereislittledoubtthattheplanetiswarming.Overthelastcentury,theplanetstemperaturehasrisenbyaround1degreefahrenheit（ofadegreecelsius）.Thewarmestsincethemid1800ˉswasthe1990s.Thehottestyearsrecordedwere1997,1998,XX,XX,XX.

　　TheUnitedNationspanelonclimatechangeprojectsthattheglobaltemperatureswillrise3-10degreesfahrenheitbythecenturyˉsend-enoughtohavethepolarcapsallbutmelted.Iftheicecapsmelt,avastmajorityofourcountriesborderswillbeunderwater.Monumentsandgreatbuildings,aswellashomesandliveswillbeunderwater,includingNewYorkCity.

　　Sonowweknowwhatsomeofthecausesareforglobalwarming,howcanweasindividualsdoourparttohelpsavetheplanet

　　Theanswerissimplerthanyoumaythink.Youdonˉthavetogomilesawayfromhometoprotest,orspendmassesofmoney.IfyoutrytofollowthefewsimplestepsthatIshallnowgiveyou,youwillhavestartedtohelpusall.

　　Firstly,plantatree.Thiscouldbeeasierthanitsounds.Joinorhelpoutalocalwildlifegroupandasktoplantatree.Trees,whenfullygrown,willhelpkeeptheplanetcooler.Onthesamepoint,youcouldprotestagainstthedemolitionoftherainforests.Thisisthesameprinciple,weneedthetreestocoolourplanetandyettheyarechoppingthemdowntocreateroadsorhomes.

　　Somethingassimpleaswalkinginsteadoftakingthecarwillhelpreducepollution.Aswellasstoppingpollution,youaregivingyourselfexercise,somethingimportantforourbodies.Sothenexttimeyougetintoyourcar,oryourmotorbike,think-doIhavetomakethisjourneybyvehicleorcanIwalk

　　Whenyouareathome,andyourgettingalittlecold.Putajumperonanddonotadjusttheheating.Theextraheatproducedbyourhomesalsoaffectstheplanet.Sotrywearinganextralayerinwinter.

　　Ifpossible,buyyourfruitandvegetablesfromlocalsuppliers.Andtrytoavoidimportedgoods.Themoreforeignfoodthatweimportthemorepollutionfromaeroplanesandboatsitwillcreate.

　　Keepingtothespeedlimitcanalsohelptheenvironment.Themoreyouspeedthemorepetrolyouaregoingtouse,makingthepollutionhigher.Also,SUVˉsmakeaboutsixtimestheirownweightinCO2eachyear.Asmallefficientdieselcarcoveringthesamedistancenotonlyusesmuchlessfuel;itmakestwothirdsless.

　　Ifpossibleusesolarenergy,afterallitisfree;allyouneedtobuyistheequipment.Youcangetmuchofyourhotwaterandheatingfromthesunandevengenerateelectricity.

　　Reduce,reuseandrecycle.Onlybuywhatyouneed;donˉtstockthecupboardswiththingsyoumayormaynotuse.Reusewhateveryoucan,likecontainersandpaper,andrecyclewhatyoucannotreuse.Itreallyisassimpleasthat.

　　Finallyturningoffunusedsourcesofpowersuchastelevisionsandheaterswillhelptheenvironment,aswellassaveyoumoney.

　　Ifeverybodystucktotheserules,wewouldbedoingagreatthingbyprotectingtheearth.SopleasetakeintoconsiderationwhatIhavesaid,andtrytodoyourpart.Afterall,itwillbeournextgenerationthatwillfeeltheeffects.

　　篇二：

英语演讲环境温室效应

　　TheGreenhouseEffect

　　全球气候变暖，是到目前为止对地球和人类生存最为紧迫也最为严重的威胁因素之一。

GlobalwarmingisoneofthemosturgentandthemostseriousfactorsnowthreatenEarthandhuman'ssurvival

　　最近，全世界冰川融化速度创下历史最快纪录，从安第斯山脉到北极，冰川消融速度加快。

全球气候变暖将直接导致南、北极以及其它冰川融化，同时一些雪山也将随着气温的不断升高而消失。

而融化后的冰川，将使海平面快速上升，世界很多美丽的城市终将被海水所淹没。

　　Recently,Thespeedofmeltingglacierssettherecordforthefastest,fromtheAndestotheArcticglaciersmeltingfaster.GlobalwarmingwillleaddirectlytomeltingoftheAntarctic,theArcticandotherglaciers,Meanwhile,somesnow-cappedmountainswilldisappearwithtemperaturesrise.Theglaciersmeltedwillenablethesealeveltoriserapidly,manybeautifulcitiesintheworldwilleventuallybesubmerged.

　　100年后南极只曾留下回忆

　　100yearslater,theAntarctichadleftonlymemories气温升高，全球变暖，极地冰川融化，企鹅失去家园！

　　HighertemperaturesmakesglobalwarmingandMeltingofpolarice,sothepenguinslosetheirhomes!

　　30年后的夏季，北极可能是一片汪洋

　　Summerafter30years,theArcticmaybeanocean.乞力马扎罗山的“雪帽”将在15年内被摘掉

　　Kilimanjaro"snowcap"willbetakenoffin15years.

　　乞力马扎罗山是非洲最高的山脉，它距离赤道仅仅300多公里，顶部却终年满布冰雪。

但是，全球变暖导致这座山的终年积雪不断消融，专家预言，“雪帽”将在15年内被摘掉。

　　KilimanjaroisthehighestmountaininAfrica,itisjustover300kmfromtheequator,butthetopcoveredwithsnowallyearround.However,Globalwarmingleadstothemountainsnowcontinuetomelt,expertspredict,"snowcap"willbetakenoffin15years.

　　什么造成了温室效应

　　Whatcausesthegreenhouseeffect

　　我认为主要有两个原因：

人类排放二氧化碳和砍伐树木

　　Ithinktherearetwomainreasons:

humanemissionsofcarbondioxideandcutsdowntrees.

　　人类每秒钟释放的二氧化碳已经超过700吨，一年就是230亿吨Carbondioxidereleasedbyhumanseverysecondhasmorethan700tons,ayearis23billiontons.

　　亚马孙河流域的农民正在焚烧热带雨林，以开垦更多耕地。

每分钟，全世界清除掉的热带森林的面积，相当于200个足球场的大小。

依照

　　现在的这种破坏速度，亚马孙雨林将在400年以内完全消失。

　　Amazonianfarmersareburningrainforesttoreclaimmoreland.Everyminute,Theworld'stropicalforestsclearedanareaequivalenttothesizeof200footballfields.Accordingtothecurrentrateofthisdestruction,TheAmazonrainforestwillcompletelydisappearwithin400years.

　　我们依靠在地球上的一切，我们需要生存，所以让我们照顾它。

WerelyontheEarthforeverything,weneedtosurvive,solet’stakecareofit.

　　篇三：

以全球变暖问主题的演讲稿

　　globalwarming,thegradualincreaseofthetemperatureoftheearth'sloweratmosphereasaresultoftheincreaseingreenhousegasessincetheIndustrialRevolution.

　　Thetemperatureoftheatmosphereneartheearth'ssurfaceiswarmedthroughanaturalprocesscalledthegreenhouseeffect.Visible,shortwavelightcomesfromthesuntotheearth,passingunimpededthroughablanketofthermal,orgreenhouse,gasescomposedlargelyofwatervapor,carbondioxide,methane,nitrousoxide,andozone.Infraredradiationreflectsofftheplanet'ssurfacetowardspacebutdoesnoteasilypassthroughthethermalblanket.Someofitistrappedandreflecteddownward,keepingtheplanetatanaveragetemperaturesuitabletolife,about60°F（16°C）.

　　Growthinindustry,agriculture,andtransportationsincetheIndustrial

　　Revolutionhasproducedadditionalquantitiesofthenaturalgreenhousegasespluschlorofluorocarbonsandothergases,augmentingthethermalblanket.Itisgenerallyacceptedthatthisincreaseinthequantityofgreenhousegasesistrappingmoreheatandincreasingglobaltemperatures,makingaprocessthathasbeenbeneficialtolifepotentiallydisruptiveandharmful.Duringthepastcentury,theatmospherictemperaturehasrisen°F（°C）,andsealevelhasrisenseveralinches.Someprojected,longer-termresultsofglobalwarmingincludemeltingofpolarice,witharesultingriseinsealevelandcoastalflooding;disruptionofdrinkingwatersuppliesdependentonsnowmelts;profoundchangesinagricultureduetoclimatechange;extinctionofspeciesasecologicalnichesdisappear;morefrequenttropicalstorms;andanincreasedincidenceoftropicaldiseases.

　　Amongfactorsthatmaybecontributingtoglobalwarmingaretheburningofcoalandpetroleumproducts（sourcesofcarbondioxide,methane,nitrousoxide,ozone）;deforestation,whichincreasestheamountofcarbondioxideintheatmosphere;methanegasreleasedinanimalwaste;andincreasedcattleproduction,whichcontributestodeforestation,methaneproduction,anduseoffossilfuels.

　　Muchofthedebatesurroundingglobalwarminghascenteredontheaccuracyofscientificpredictionsconcerningfuturewarming.Topredictglobalclimatictrends,climatologistsaccumulatelargehistoricaldatabasesandusethemtocreatecomputerizedmodelsthatsimulatetheearth'sclimate.Thevalidityofthesemodelshasbeenasubjectofcontroversy.Skepticssaythattheclimateistoocomplicatedtobeaccuratelymodeled,andthattherearetoomanyunknowns.Somealsoquestionwhethertheobservedclimatechangesmightsimplyrepresentnormalfluctuationsinglobaltemperature.Nonetheless,forsometimetherehasbeengeneralagreementthatatleastpartoftheobserved

　　warmingistheresultofhumanactivity,andthattheproblemneedstobeaddressed.In1992,attheUnitedNationsConferenceonEnvironmentandDevelopment,over150nationssignedabindingdeclarationontheneedtoreduceglobalwarming.

　　In1994,however,aUNscientificadvisorypanel,theIntergovernmentalPanelonClimateChange,concludedthatreductionsbeyondthoseenvisionedbythetreatywouldbeneededtoavoidglobalwarming.Thefollowingyear,theadvisorypanelforecastariseinglobaltemperatureoffromto°F（–°C）by2100ifnoactionistakentocutdownontheproductionofgreenhousegases,andariseoffrom1to°F（–2°C）evenifactionistaken（becauseofalreadyreleasedgasesthatwillpersistintheatmosphere）.

　　AUNConferenceonClimateChange,heldinKyoto,Japan,in1997resultedinaninternationalagreementtofightglobalwarming,whichcalledfor

　　reductionsinemissionsofgreenhousegasesbyindustrializednations.Notallindustrialcountries,however,immediatelysignedorratifiedtheaccord.InXXtheG.W.BushadministrationannounceditwouldabandontheKyotoProtocol;becausetheUnitedStatesproducesaboutonequarteroftheworld'sgreenhousegases,thiswasregardedasasevereblowtotheefforttoslowglobalwarming.DespitetheAmericanmove,mostothernationsagreedlaterintheyear（inBonn,Germany,andinMarrakech,Morocco）onthedetailsnecessarytoconverttheagreementintoabindinginternationaltreaty,which