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YellowstoneNationalPark•制作人：曹亚敏王丽歌孙杰赟WelcometoYellowstoneNationalPark,setasidebytheU.S.CongressasanationalparkonMarch1,1872,islocatedmostlyintheU.S.stateofWyoming（美国怀俄明州）,thoughitalsoextendsintoMontana）蒙大纳（美国州名））andIdaho（爱达荷).Theparkwasthefirstofitskind,andisknownforitswildlifeanditsmanygeothermal（地热的）features,especiallyOldFaithfulGeyser(喷泉),oneofthemostpopularareasinthepark.Ithasmanytypesofecosystems,butthesubalpine（亚高山带）forestisdominant.ItwasknowntotheAmericansastheworld'stheoneandonlymagicPark,itistheworld'sfirstNationalPark.•YellowstoneNationalParkspansanareaof3,468squaremiles(8,983km²),comprisinglakes,canyons,riversandmountainranges.YellowstoneLakeisoneofthelargesthigh-altitudelakesinNorthAmericaandiscenteredovertheYellowstoneCaldera,thelargestsupervolcanoonthecontinent.Thecalderaisconsideredanactivevolcano;ithaseruptedwithtremendousforceseveraltimesinthelasttwomillionyears.Halfoftheworld'sgeothermalfeaturesareinYellowstone,fueledbythisongoingvolcanism.LavaflowsandrocksfromvolcaniceruptionscovermostofthelandareaofYellowstone.TheparkisthecenterpieceoftheGreaterYellowstoneEcosystem,thelargestremaining,nearly-intactecosystemintheEarth'snortherntemperatezone.GeyserBasinOldFaithfulshowsthatrocksbelowthesurfaceareveryhot.Rocksbelowgroundheatthewaterunderpressureforaround90minutes.Suddenly,somewaterspurtsthroughatiny5-inchwidecrackintherocks.Thiscausesadropinthepressurewithinthewaterchamber.Inaninstant,thousandsofgallonsofwaterareturnedtosteamandblastedupintotheair.•TheoldfollowerhotspringistheworldfamousJIANXIEQUAN,in1870isnamed.Thisspringsprayswater17to21,thesprayingofwaterapproximately40,000litres,theaverageheightis40meterseveryday.Becauseof1,995earthquakesinfluences,thepresentsprayingofwatergapchangedlong.Oldfollowerhotspringsince100yearsbeforeisdiscovered,frequentlybyfixedgapsprayingofwater.老信徒温泉是世界有名的间歇泉，1870年被命名。此泉每天喷水17至21次，喷水约4万余升，平均高度为40米。因为1995的地震影响，现在的喷水间隔变得长了。老信徒温泉自从100年以前被发现以来，经常以固定的间隔喷水•Theneighboringplacearrangementhastheforewordthetungoiltreewoodenconstructionistheworldfamousoldfollowerhotel,peripheraltakesawalktheregiontobeallowedtoseetheAfricanreactionary,hereattractedmassivelywentsightseeingthevisitor.相邻的地方排列有序的桐木建筑是世界著名的老信徒旅馆,周边的散步区域可以看见非洲野牛，这里吸引了大量的观光客人。•Ifyouarenotwillingtomissthesprayingofwaterscene,pleasegivethesquaretourguidecentertomakethephonecall,inquiredtherecentsprayingofwatertime,youmayreasonablearrangeownlikethisprogram.如果你不愿错过喷水场面，请给广场导游中心打电话，询问最近的喷水时间，这样你可以合理的安排自己的日程。YellowstoneLakeisoneofthelargesthigh-altitudelakesPavedroadsprovidecloseaccesstothemajorgeothermalareasaswellassomeofthelakesandwaterfallsThecaldera(火山喷口)isconsideredanactivevolcano,ithaseruptedwithtremendousforceseveraltimesinthelasttwomillionyearsGrizzlies,wolves,andfree-rangingherdsofbisonandelkliveinthepark.AnimalBearisthesymbolofYellowstoneNationalParkYellowstonehasnumerousrecreationalopportunities,includinghiking,camping,boating,fishingandsightseeing.ThemostbeautifulSplendor--hotspringprismAmericanHuangshiNationalPark(TheGrandPrismaticSpring)GrandPrismaticSpringislocatedinHuangshiNationalPark(alsoknownasthebigrainbowsprings),isthelargestintheUnitedStates,theworld'sthirdlargestspa.Itisabout75to91meterswide,49metersdeep,everyminuteabout2000litersofwaterwillgush,temperatureof71°C.GrandPrismaticSpringbeautyliesinthecolorchangewiththeseasons,spring,lakelevelchangefromgreentobrightorangered,thisisbecausethemineralrichwaterlivingalgaeandpigmentedbacteriaandothermicroorganisms,theirinvivochlorophyllandcarotenoidpigmentratiochangesaccordingtotheseasons,sowaterisalsoshowingadifferentcolor.Inthesummer,chlorophyllcontentisrelativelylow,appearorange,red,oryellow.Butinwinter,duetothelackoflight,thesemicroorganismsproducemorechlorophylltoinhibitionofcarotenoidcolors,soitsawthedarkgreenwater.GrandPrismaticSpring五彩斑斓的大棱镜温泉Beautifulthingsoftenaredangerous!•YellowstoneNationalParkisonasupervolcanicvent,somedayitwillerupt,thatwillbe•abigsufferingfor•ourmankind,•whichlikethe•movie2012.•That’sallThankyou!