贵州梵净山森林树干附生尖叶拟船叶藓生殖生态学分析

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1、StudiesonReproductiveEcologyinEpiphyticDolichomitriopsisdiversiformisonTreeTrunksinForestinFanjingMountainofGuizhouAbstractThecontentstostudyinplantreproductiveecologyareextremelyrich．Ithasincreasedthedifficultinstudiesbecausetheplantsareverysmallinbryop

2、hytes．Wemadeanon。the‘spotinvestigationindetailinthedistribution，thetypesandcharacteristicsofhabitatinepiphyticDolichomitriopsisdiversifo朋括(Mitt．)Nog—Thenwedeterminedthesampleswhichwereremovedinaccordance、析t11statisticstheoriesinlaboratory．Themainstudycon

3、tentsandmainresultsweredescribedasfollows：1．Theverticaldistributiverangewas1650～2080m，themajorpopulationswerefoundonthedifferenthosttreetrunks，fewpopulationswerefoundinsoiloronnakedrocksinDdiversiformisinFanjingMountaininGuizhou．Itshabitatsaredifferentbe

4、tweendifferenthosttrees，whereasthereliedthecommonhabitatcharacteristicsofnotmorethan2mheightfromthebottomsofhosttreestrunks，lesslight，hi曲relativehumidity,slowwindspeed，slowevaporationspeedandlongtimeofremaininghumidinmiddle—lowertreebarks．Determiningthei

5、solatedindividualsindicatesthatitisadioeciousmossspecies．Themorphologyisremarkablydifferentbetweenitspefichaetiumandperigonium．Itsperichaetiumisbiggeranditsamountismuchmorethanthoseofitsperigoniaanditsperigoniumistoosmalltofindout．Itssporophyteisupright，

6、itssetaislong，andthin，itscapsuleisregularlongovalanditscalyptraiscucullate．2．Thenumberofperichaetium’Smeaninperfemaleindividualwas4．54inepiphyticD．diversiformisinFanjingMountaininGuizhouandperichaetiawerefoundinthemainstemsandfromtheprimarytosixthbranche

7、s．ThenumberofperichaetiafoundintheprimarybranchesWaslargestandWassignificantlymorethanIIIthenumberofperichaetiafoundinmainstems，thenumberofinsecondarybranches，thenumberinthirdbranches，thenumberinfourthbranches，thenumberinfifthbranchesornumberinsixthbranc

8、hes(P<0．01)．Therewasnotsignificantdifferencebetweennumbersofperichaetiafoundinmainstemsandinsecondarybranches(P>O．O1)，butnumberofperichaetiainmainstemsorinsecondarybranchesbothsignificantlymorethannumberofperichaetiafoundi