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1、珊瑚礁完全介绍英文版pptCoralsarebiological,cnidariadoor,includedanimalssuchasjellyfish,polyps,softcoralandseaanemones. Coralreefs,ismadeupofstonecoralspurposecoralskeletons.Thebonesofmaincomponentiscalciumcarbonate(CaCO3).TheclassificationofthecoralAccordingtothepresenceofsymbioticalgaecanbedividedinto: Ac
2、lassofreef-buildingcoralsaresymbioticalgae,livinginshallowareasofthesunshine; Anotherkindisnoalgaesymbiosisofreef-buildingcorals,liveinthedeepsea.Theclassificationof thecoralreefsAccordingtoformdivisionare:fringingreef(fringingreef),thebarrierreefandreefatoll,tableandsometransitiontype瑚礁的分类Fringi
3、ngreefBarrierreefBarrierreefisalsocalledthebarrierreef,likelongbeach,aroundtheoutsideofthefartheroffshore,andseparatedbyawideshallowseasandcoast,orthroughaknownasthewatersofthelagoon.SuchasAustralia'sGreatBarrierReefatollAccordingtothesettlementofDarwin'stheory,themajorityofcoralreefsisthroughvol
4、canicactivityintobasaltformedislanddevelopment,duetofallingoftheland(orsearise)andformatoll.Theformationof theGreatBarrierReefCoralpostureisexquisite,colorandlusterisbeautiful,canonlyliveintheyearkeepin22to28degreesofwater,watertemperatureandwatermustbecleanandtransparent.Australia'snortheastcoas
5、toutercontinentalshelfwatersaretheidealconditionsofreproductivecoralpolyps.Coralreefbuildingprocessisveryslow,inthebestcondition,thethickeningofthereefbodyeveryyearbut3-4cm.Somerockthicknesshasamountedtohundredsofmeters,explainthe"architect"herehasgonethroughalongtime.AtthesametimealsoshowsthatAu
6、stralia'snortheastcoastonthegeologichistoryofsubsidenceprocess,hasexperiencedthepursuitofsunandfoodcoralgrowthup.TheGreatBarrierReefformationYuZhongxinperiod,morethan25millionyearsofhistory.Itsareaisstillexpanding.Itisafterthelasticeage,searosetothepositionafterayearsnow.TheGreatBarrierReefoneart
7、histhemostbeautiful"decorations",likeashiningskyblue,indigo,blueandpurewhitelight,eveniftolookonthemoonisalsoclearlyvisible.ThecolorfulcoralInthegroupoftheGreatBarrierReef,colorfulcoralreefshavered,pink,green,purple,ye
