千岛湖库区植物功能特征与人为干扰对岛屿植物功能型的影响

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1、shrubdominatedwithgrowthform．MaPhdominatedwithlifeform．Forfruittype，capsule，drupeandachenewerethemaintypes．Forleaftexture，orthophyllandsclerophyllwerethemaintypes．Forleaftype，simpleleafdominated．Bothrichnessofevergreenordeciduousandentireornon—entireleafwereclose．Andento

2、mophilouswasthemainpollinationtype．3．PlantquantativefunctiontraitsWecarriedanalysisonquantitycharacteroftheinvestigatedplantfunctionaltraits，includingspecificleafarea(SLA)，leafdrymasscontent，leafthickness，specificstemdensityandstemdrymasscontent．Eachtraitanalysisofleafan

3、dsteminvolved227and145speciesrespectively．NegativecorrelationweredetectedbetweenSLAandleafdrymasscontent，SLAandleafthickness(r=一O．610，-0．231，P<0．01)．Thecorrelationbetweenleafthicknessandleafdrymasscontentwasnon-significant．Wealsofoundnegativecorrelationbetweenspecificste

4、mdensityandstemdrymasscontent(r=·0．21，P

5、erageweightofseeddrymassshowedarbor>shrub>liane>gramineous>non-gramineous，theresultimpliedthatseedsizeisrelatedtoplant’Sgrowthform．Moreover，weobservedthatgrandplantalsohadheavierdrymass．OnewayANOVAanalysissuggestedthatthereWasasignificantdifferenceamongthegrowformsgroups

6、intheirseeddrymasscontent．4．TheeffectsofdifferentintensityofhumandisturbanceontheplantfunctionaltraitinislandsByusingTWINSPANandDCAordinationanalysis，alldetected138speciesin20islandswithdifferentintensityofdisturbanceweredividedinto5groups．PFTslconsistsspeciesofevergreen

7、，phaenerophyteandnon-herbaceous／evergreen，chamaphytesandnon-herbaceous；PFTs2consistsofdeciduous，phaenerophyteandnon-herbaceous／deciduous，chamaphtes，non—herbaceous；PFTs3consistsforbs，flash—fruitedandfern；PFTs4consistsforbsanddry-fruited；PFTs5consiststhegroupofgrass，fernan

8、dherbaceous-vines．TheaverageproportionsofPFTsl，PFTs3andPFTs4showeddeclineasdisturbanceintensityincrease