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ID:19312640
大小:64.00 KB
页数:10页
时间:2018-09-18
《第九集桧木森林共生现象》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、第九集檜木森林的共生現象大片頭30”ForestStoryofTaiwanWithintheforestitisactuallynotasquietasthenakedeyeseesitOrganismsbothdependonandcompetewithoneanotherforsurvivalThisisYuanyangLakeNatureReserve//situatedon110ForestRoadofftheNorthernHorizontalHighwayAsthetoweringcypresstreesstrivetosurviveatthesametimemanyorganis
2、msarealsoquietlyandpassively//markingtheirownterritorieswithintheforest小片頭:片名字幕:SymbiosisWithintheCypressForestSituatedat1670metresabovesealevelbeinginfluencedbyitstopographyandthenorth-easterlymonsoonYuanyangLakehasahighlevelofprecipitationandhumidityItalsopossessesavastareaofnaturalandstructurally
3、complete//yellowcypress(扁柏)forestAsrainfallsrainwaterwillpassthroughthecypress’canopyleavesandbranchesandfinallypenetrateintothesoilAsrainfallstopsthebottomlayeroftheforestbeginstostirTurningoverapieceoffallenleafasnailisslowlymovingaroundTheforest’shumidanddimenvironment//isafavouritehabitatforsnai
4、lsWithintheforestplantswhichcannotsurviveontheirownwillliveoffothertreesThehumidenvironmentofthecypressforest//hasprovidedasuitablehabitatforthegrowthofmanyinvertebratesIthasalsonurturedmanyepiphytes//astheyliveonothertreestoobtainnutrientsManyfernandorchidaceaeplantsarecommonexamplesofplantswhichli
5、veontreetrunksandbranchesforsurvivalandgrowthTobedefinedasanepiphytefirstlytheplanthastobeonewhichlivesonatree//anddoesnottouchthegroundandsecondlyisthatitdoesnotextractnutrientsfromitshostOntheotherhandparasiticplantsaredifferentinthat//theywillextractnutrientsfromtheirhostsThereforewhileepiphytesn
6、eedtoevolve//sothattheycanproducetheirownnutrientsforgrowththisisnotnecessaryinthecaseofparasiticplantsbecausesomeofthemwillgrowrootsdeepintothebark//oftheirhosttreestodrawandabsorbnutrientsThisisthebiggestdifferencebetweenthetwoOnaglobalscaleepiphyticplantsaremainlydistributedintropicalandsubtropic
7、alrainforestsaswellasfogforests(霧林)inmountainregionsSincetheirhabitatisafoggyandrainyenvironmenttheycaneasilyobtainsufficientamountsofwaterandnutrientsBecauseofTaiwan’srelativelyhighlevelofhumiditythe
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