美國黃石國家公園英文版課件

TodayIwilltalkaboutAmericaYellowstoneNationalPark.美國黃石國家公園英文版NorthEntrance美國黃石國家公園英文版

YellowstoneNationalParkisanationalparklocatedprimarilyintheU.S.stateofWyoming,althoughitalsoextendsintoMontanaandIdaho.ItwasestablishedbytheU.S.CongressandsignedintolawbyPresidentUlyssesS.GrantonMarch1,1872.

Yellowstone,widelyheldtobethefirstnationalparkintheworld,

isknownforitswildlifeanditsmanygeothermalfeatures.美國黃石國家公園英文版OldFaithfulGeyser[?ɡa?z?]

(老忠實(shí)間歇泉)美國黃石國家公園英文版Eruptions[?'r?p?n]canshoot3,700to8,400USgallons(14,000to32,000L)ofboilingwatertoaheightof106to185feet(32to56m)lastingfrom1.5to5minutes.Theaverageheightofaneruptionis145feet(44m).Intervalsbetweeneruptionscanrangefrom45to125minutes,averaging66.5minutesin1939,slowlyincreasingtoanaverageof90minutesaparttoday.美國黃石國家公園英文版GrandPrismaticSpring

[pr?z?m?t?k](大棱鏡)美國黃石國家公園英文版TheGrandPrismaticSpringisthelargesthotspringintheUnitedStates,andthethirdlargestintheworld.Thespringisapproximately

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80mto90minsizeand50mindepth.GrandPrismaticSpringwasnamedby

themforitsstrikingcoloration.Itscolorsmatchtherainbowdispersionofwhitelightbyanopticalprism['pr?z?m]:red,orange,yellow,green,andblue.美國黃石國家公園英文版美國黃石國家公園英文版TheGrandCanyonoftheYellowstoneisthefirstlargecanyonontheYellowstoneRiverdownstreamfromYellowstoneFallsinYellowstoneNationalPark.Thecanyonisapproximately24mileslong,between244mand366mdeepandbetween0.45kmand1.2kmwide.TheGrandCanyonofthe

Yellowstone

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黃石公園的大峽谷

美國黃石國家公園英文版美國黃石國家公園英文版MammothHotSpring['m?m?θ]

(猛犸象溫泉)美國黃石國家公園英文版美國黃石國家公園英文版MammothHotSpringsisalargecomplexofhotspringsonahilloftravertine

['tr?v?ti:n]inYellowstoneNationalParkadjacent[??d?e?snt]toFortYellowstoneandtheMammothHotSpringsHistoricDistrict.Itwascreatedoverthousandsofyearsashotwaterfromthespringcooledanddepositedcalcium['k?ls??m]carbonate['kɑ:b?ne?t](overtwotonsflowintoMammotheachdayinasolution).美國黃石國家公園英文版美國黃石國家公園英文版

Flora['fl?:r?]（植物群）Over1,700speciesoftreesandothervascular

[?v?skj?l?(r)]plantsarenativetothepark.Another170speciesareconsideredtobeexotic[?ɡ'z?t?k]

speciesandarenon-native.Oftheeightconifer['k?n?f?(r)]treespeciesdocumented,LodgepolePineforestscover80%ofthetotalforestedareas.Yellowstonesandverbena[v?:'bi:n?]areendemic[en?dem?k]totheYellowstone'slakeshores.黃石沙地馬鞭草是黃石公園湖邊特有的植物。美國黃石國家公園英文版Fauna['f?:n?]（動(dòng)物群）Yellowstoneiswidelyconsideredtobethefinestmegafauna[me'ɡ?f?:n?]wildlifehabitatinthelower48states.Therearealmost60speciesofmammalsinthepark,includingthegraywolf,thethreatenedlynx[l??ks],andgrizzlybears.Otherlargemammalsincludethebison(oftenreferredtoasbuffalo),blackbear,elk,moose[mu:s],mule[mju:l]deer,white-taileddeer,mountaingoat,pronghorn['pr??h?:n],bighornsheep,andmountainlion.美國黃石國家公園英文版Bison['ba?sn](Buffalo)TheYellowstoneParkbisonherdisthelargestpublicherdofAmericanbisonintheUnitedStates.Therelativelylargebisonpopulationsareaconcernforranchers.美國黃石國家公園英文版美國黃石國家公園英文版NorthwesternWolfThenorthwesternwolf(Canislupusoccidentalis),alsoknownastheMackenzieValleywolfornortherntimberwolfisasubspeciesofgraywolfwhichrangesfromtheupperMackenzieRiverValley,southwardintocentralAlberta.