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1、JourneyintoAmazonia:TheBigTopNGC全民英檢:探索亞馬遜－雨林頂端播出時間:11月5日星期六@11:00-12:00TherainforestofAmazonia-wherelifeinallitsbeautyandmyriadformsreignssupreme.LessknownthenthesurfaceofMars,itsinhabitantsstrangerthansciencefiction...thisisEarth'sfinal,unexploredfrontier.ThisisAmazonia's"BigTop"
2、!Theworld'smightiestriverbreaksthroughthecanopyofthelargesttropicalrainforestontheplanet.Combinedwithitstributaries,theAmazondrainsintoanareaofalmostsevenmillionsquarekilometres-morethanhalfofSouthAmerica.LikeagiantcircustentninetimesthesizeofTexas,Amazonia'streecoveredworldhoststh
3、egreatestvarietyofplantsandanimalsontheplanet.Sixtymetersabovetheground,lessstudiedthantheseafloor...Untilrecently,thisincrediblespectacledefiedeventhemostintrepidscientistsandexplorers.Somanyofitsricheshaveyettoberecordedthatitisbelievedthatthisbizarreandbeautifulcanopycouldhouseh
4、alfofalltheworld'sspecies.Inadditiontomillionsofinsects,Amazonia'simpressivecastofcharactersincludesatleast300differentmammals.Atleastonehundredseventy-fivedifferentlizards...Overfourhundredreptilesandamphibians...Treeclimbersofeveryshapeandsize,Andathirdoftheworld'sbirds.Thesemagn
5、ificentcreaturesallhavetheirownuniquetricksandtalents,costumesandcamouflage,andcommandperformances.A100yearsagotheAmericanexplorer,WilliamBeebe,wroteoftheAmazon:"Yetanothercontinentofliferemainstobediscovered,notupontheearth,butoneortwohundredfeetaboveit,extendingoverthousandsofsqu
6、aremiles...Thereawaitsarichharvestforthenaturalistwhoovercomestheobstacles-gravitation,ants,rottentrunks-andmountstothesummitofthejungletrees."SinceBeebemarvelledatthisincrediblespectacle,scientistshavehadtomultiply-manytimesover-allpreviousestimatesoftheextentoflifeinthesetreetops
7、.Onlyrecently,thesheernumberoftermiteshascometolight-Morethan200speciescalltheAmazonriverbasintheirhome-acumulativemassthreetimesthatofallthebirdsandmammalsintherainforest.YetalmostahundredyearslaterAmazoniaisrevealinghersecretsslowlylikecrumbsfromagiant'sbanquettable.Foravastnumbe
8、rofspecies,thecanopyofthis
