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1、FakeChristmastreesmightbeconvenientandseemeco-friendlyatfirstglance,buttheirenvironmentalcosts—measuredingreenhousegasemissionsandlandfillspace—faroutweightheirbenefits,sayconservationistswhourgeconsumersto"stayrealHthisholidayseason.呼吁消费者在假期“保持真实”的环保主义人士
2、说，假圣诞树可能比较方便，咋一看也比较环保，但是环境成本远超过利益按温室气体排放量和垃圾掩埋空间计算。“Alloftheenvironmentalgroupsandallofthescientistssayyoushouldusearealtree・Thedebateisover/9saidRickDungey,aspokespersonfortheNationalChristinasTreeAssociation.“Theonlypeoplestilltalkingaboutitarethepeople
3、tryingtosellfaketrees.”"所有环保团体和科学家呼吁大家使用真正的树木。讨论已经结束。”国家圣诞树协会发言人RickDungey说，"只有假圣诞树的商家还在讨论。”Artificialtreesaremadefromakindofplasticcalledpolyvinylchloride,whichisderivedfrompetroleumandcancontainleadorotherharmfultoxins.Furthermore,accordingtotheU.S.Comm
4、erceDepartment,about80percentoffaketreesaremanufacturedinChina,wheremostelectricityisgeneratedbyburningcoal—oneofthedirtiestfuelsources・人工树由一种被称为聚氯乙烯的塑料制成，聚氯乙烯从汽油中提炼获得，含有铅或者其他有害毒素。此外，根据美国商务部发布的信息，大约80%假圣诞树产自中国，大部分中国的电能通过燃烧煤炭获得最脏的一种能源。（Related:SeetheGlobal
5、WaterFootprintofKeyCrops)Afterthetreesaremade,theymustalsobeshippedacrosstheocean,usuallyindiesel-fuelpoweredships,resultinginevenmoregreenhousegasemissionsthatcontributetoglobalwarming.制作完成的假圣诞树通常还必须通过柴油动力轮船漂洋过海，导致排放更多引起全球变暖的温室气体。Andeventhoughanartificia
6、ltreecanbereused,itstillhasashortlifeexpectancy・"Theaveragefamilykeepsafaketreeforaboutfivetosixyears,andthenitgoestothelandfill,whereitjustsitstherebecauseitdoesn'tbiodegrade/*saidBillUlfeider,NewYorkStatedirectorforTheNatureConservancy.即使人造树能够重复利用，它的使用寿
7、命也比较短。“一户家庭平均保留一棵假圣诞树5至6年,然后它就到了垃圾掩埋场，因为它不会被分解，所以就一直在那儿。”纽约州自然保护协会负责人BillUlfelder说。Incontrast,realtreesarecompletelyrecyclable,andtheyaregrownintheUnitedStatesonthousandsoffarmsthatemployanestimated100,000people.与此相比，真正的树木是完全可再生的，它们生长在美国数千个农场内,雇用了大约10名职工。
8、Additionally,foreveryrealChristmastreethatissold,aboutninemorearelefttomatureandgrowtothedesiredheightsonthefarms.nThereareabout12,000treefarmsintheU.S.thataregrowingabout400milliontreesrightnow.Sothereareactuallymo
