推荐下载BBC经典《行星地球》英文解说词全集文档格式.docx
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推荐下载BBC经典《行星地球》英文解说词全集文档格式.docx
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行星地球英文解说词
第1集PLANETEARTHFromPoletoPole
AhundredyearsagotherewereoneandahalfbillionpeopleonEarth。
Now,oversixbillioncrowdourfragileplanetEarth.Butevenso,therearestillplacesbarelytouchedbyhumanity.ThisserieswilltaketothelastwildernessesandshowyoutheplanetEarthanditswildlifeasyouhaveneverseenthembefore。
Imagineourworldwithoutsun。
MaleEmperorpenguinsarefacingthenearestthatexistsonplanetEarthEarth—winterinAntarctica。
It’scontinuouslydarkandtemperaturesdroptominusseventydegreescentigrade。
Thepenguinsstaywhenallothercreatureshavefledbecauseeachguardsatreasure:
asingleeggrestedonthetopofitsfeetandkeptwarmbeneaththedownybulgeofitsstomach。
Thereisnofoodandnowaterforthem,andtheywillnotseethesunagainforfourmonths.Surelynogreaterordealisfacedbyanyanimal.AsthesundepartsfromtheAntarcticitlightenstheskiesinthefarnorth.It'
sMarchandlightreturnstothehighArctic,sweepingawayfourmonthsofdarkness.Apolarbearstirs.Shehasbeeninherdenthewholewinter.Heremergencemarksthebeginningofspring.Aftermonthsofconfinementundergroundshetoboggansdowntheslope.Perhapstocleanherfur,perhapsforsheerjoy。
Hercubsgazeoutoftheirbrightnewworldfortheveryfirsttime。
Thefemalecallsthem,butthissteepslopeisnottheeasiestplacetotakeyourfirststeps.Buttheyarehungryandeagertoreachtheirmother,who’sdelayedfeedingthemonthisspecialday.Nowsheluresthemwiththepromiseofmilk,theonlyfoodthecubshaveknownsincetheywereborndeafandblindbeneaththesnowsometwomonthsago.Theirmotherhasnoteatenforfivemonthsandhaslosthalfherbodyweight.Nowsheconvertsthelastofherfatreservesintomilkforhercubs.Thespringsunbringswarmthbutalsoaproblemforthemother.Itstartstomelttheseaice.Thatiswhereshehuntsforthesealsheneedstofeedhercubs.Andshemustgettherebeforetheicebreaksup。
Fornowthoughit’sstillminusthirtydegreesandthecubsmusthavetheshelteroftheden.It’ssixdayssincethebearsemergedandspringisadvancingrapidly.Butevennowblizzardscanstrikewithoutwarning。
Beingsosmall,thecubsareeasilychilledandtheywillbemorecomfortablerestingintheden.Buttheirmothermustkeepthemoutandactive。
She'
sbecomingweakfromhungerandthere’snofoodonthesenurseryslopes。
Theseaicestillholdsfirm,butitwon’tlastmuchlonger。
Day10,andthemotherhasledhercubsamilefromtheden。
It’stimetoputthemtothetest。
They'
vegrownenormouslyinconfidence,buttheydon'
thavetheirmother’ssenseofurgency。
Atlastitseemsthatthey’rereadyfortheirjourneyandthey’reonlyjustintime,forafewmilesfromthecoasttheiceisalreadysplitting.Nowthemothercanstarthuntingforthesealstheymusthave,butshe’sleadinghercubsintoadangerousnewworld。
Nearlyhalfofallcubsdieintheirfirstyearoutontheice.Summerbrings24hoursofsunlightandthethawingshiftinglandscape。
FurthersouththewintersnowshavealmostclearedfromtheArctictundra.NorthernCanada'
swildfrontier.Herenaturestagesoneofhergreatestdramas—EveryyearthreemillioncariboumigrateacrosstheArctictundra.Theimmensityoftheherdcanonlybeproperlyappreciatedfromtheair。
Someherdstravelover2,000milesayearinsearchoffreshpastures.Thisisthelongestoverlandmigrationmadebyanyanimal。
reconstantlyonthemove。
Newborncalveshavetobeupandrunningthedaytheyareborn。
Butthevastherdsdonottravelalone。
Wolves.Packsofthem,eighttotenstrong,shadowthemigration.Andtheyarehungry.It’sthenewlyborncalvesthattheyareafter.Runningdirectlyattheherdisaploytogeneratepanic.Theherdbreaksupandnowit’seasiertotargetanindividual。
Inthechaosacalfisseparatedfromitsmother。
Thecalfisyoung,butitcanoutrunthewolfifonlyitmanagestokeepitsfooting。
Atthisstagetheoddsareeven-eitherthecaribouwillmakeamistakeorafteramilethewolfwillgiveup。
Midsummeronthetundraandthesundoesnotset。
Attheselatitudesthesun'
sraysareglancingandnotenoughoftheirenergyreachesthegroundtoenabletreestogrow.You'
llneedtotravel500milessouthfromherebeforethatispossible。
Thesestuntedshrubsmarkthetreeline-thebeginningoftheborealforest—thetaiga.Theneedle—shapedleavesoftheconifersarevirtuallyinediblesothisforestsupportsverylittleanimallife.It'
sasilentplacewherethesnowisunmarkedbyfootprints。
IntheArcticwintersnowformsacontinuousblanketacrosstheland.Butasspringcreepsupfromthesouththetaigaisunveiled。
ThisvastforestcirclingtheglobecontainsathirdofallthetreesonEarthandproducessomuchoxygenitchangesthecompositionoftheatmosphere.Aswetravelsouthsothesun'
sinfluencegrowsstrongerandat50degreesoflatitudearadicaltransformationbegins.Summersherearelongenoughforbroadleaftreestoreplaceconifers。
Broadleavesaremucheasiertoeatanddigestsonowanimalscancollecttheirshareoftheenergythathascomefromthesun.It'
ssummerandtheseforestsarebustlingwithlife。
Butthegoodtimeswillnotlast.Broadleavesmustbeshedinwinterfortheirdamagebyfrost。
Astheydisappear,sothelandbecomesbarrenwithlittleforanimalstoeat。
Theinhabitantsmustmigrate,hibernate,orfacemonthsofnearstarvation.TheAmurleopard—therarestcatintheworld.Here,inthedeciduousforestsofeasternRussiathewintermakeshuntingverydifficult.Prayanimalsarescarce,andthere’snoconcealingvegetation.Thecubisayearoldandstilldependentonitsmother。
Deerarefrequentcasualtiesoftheharshwinterandtheseleopardsarenotabovescavengingfromacorpse。
Africanleopardscouldneversurvivehere,buttheRussiancatshavethickfurtoshieldthemfromthecold.ThereareonlyfortyAmurleopardsleftinthewildandthatnumberisfalling。
Likesomanycreatures,thecatshavebeenpushedtotheveryedgeofextinctionbyhuntingandthedestructionoftheirhabitat.TheAmurleopardsymbolisesthefragilityofournaturalheritage.Thefutureofanentirespecieshangsonsurvivalofatinynumberofmotherslikethisone.Allanimals,rareorcommon,ultimatelydependfortheirenergyonthesun。
InJapanthearrivalofthecherryblossomannouncesthebeginningofspring.Thesun'
senergybringscolourtothelandscape。
Theearth,asitmakesitsannualjourneyaroundthesun,spinsonatiltedaxis。
Andit’sthistiltthatcreatestheseasons。
Theadvanceoftheseasonsbringsconstantchange。
Asthesun'
sinfluencediminishesinthenorth,sothedeciduousforestsofAmericabegintoshutdownlosingtheirleavesinpreparationforthedarkcoldmonthsahead.Oneseasonhandsovertoanother。
Someorganismsthriveondecay,butmostmustmakespecialpreparationsforwinterandalifewithlittlesun.Wholepopulationsofanimalsarenowforcedtotravelgreatdistancesinpursuitoffoodandwarmth。
300,000BaikaltealgathertoescapefromtheSiberianwinterbymigratingsouthtoKorea-theworld'
sentirepopulationinasingleflock.Buttherearepartsoftheworldthathavenoseasons.Inthetropicsthesun’sraysstriketheearthheadonandtheirstrengthismoreorlessconstantallyearround。
Thatiswhythejunglegrowssovigourouslyandsupportssomuchlife.Thisforestcoversonly3percentoftheplanet’ssurface,butitcontainsmorethan50percentofallitsplantsandanimals.Thecanopyisparticularlyrich。
Therearemonkeys,birdsandmillionsofspeciesofinsects,exactlyhowmanywehavenoidea.Thecharacteroftheforestchangesaswedescend,becomingeverdarkeranddamper,favouringdifferentkindsofanimalsandplants.Lessthan2percentofthesunlightreachesthefloor,butevenherethereisextraordinaryvariety.InthegreatislandofNewGuineathereare42differentspeciesofbirdsofparadise,eachmorebizarrethanthelast。
Thisforestissorichthatnourishingfoodcanbegatheredveryquickly。
Thatleavesthemalesix-plumedbirdofparadisewithtimetoconcentrateonothermattersliketidyinguphisdisplayarea。
Everythingmustbespickandspan.Allisready。
Veryimpressive,butnooneiswatching.Thesuperbbirdofparadisecallstoattractafemale。
Andhehasmoreluck.Butwhatdoeshehavetodotoreallyimpressher?
Sheretirestoconsiderherverdict.It'
shardnottofeeldeflatedwhenevenyourbestisn'
tgoodenough.Thesuninfluenceslifeintheoceansjustasitdoesonland。
Itsrichestpartsarethosewherewavesandcurrentsbringfertilisingnutrientstosurfacewatersthatarebathedinsunlight.TheseasofftheCapeinSouthAfricahavethismagicrecipeandarehugelyproductive.Summeristhetimeofplentyandit’snowthatthesealsstarttobreed。
Thestrikeofagreatwhitesharklastsameresecond。
Slowingitdownfortytimesrevealsthetechniqueandimmensestrengthofthismassivepredator。
Ifsurprisefails,therewillbeachase.Thesharkisfasteronastraightcoursebutitcan'
tturnassharplyastheseal,itsagilityversuspower。
Oncethesealshavefinishedbreedingthegiantsharkswillmoveon.It’snowbecomingclearthatgreatwhitesmigratethousandsofmilesacrosstheoceanstoharvestseasonalabundancesindifferentseas.Thesun,beatin
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