全日潮海区红树林造林关键技术的生理生态基础.研究

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1、Abstractfrequencies(every3d，7d，14dand28drespectively)weredesignatedtothetreatmentgroups．ThegrowthandphysiologicalresponsesofRsseedlingsunderdifferenttreatmentsweremeasured，SOwerethefoulingfaunacommunitiesontheseedlings．Furthermore，apreliminarybio—controllingexpe

2、rimentwasconducted．Theresultswereshowedasfollowing．1．Thegrowthresponsestogradientsoffloodingdifferedamongthesefivemangrovespecies，differentstrategieswereadoptedtoadaptthefloodingstresshabitats．InAc，stemelongationwaspromotedatlowerTFEs；leavesgrewbefferinmoderateh

3、abitats；andbiomassproportionschangednarrowly，withmoreaccumulatedintheleaf．Amseedling’SstemelongationwasalsopromotedbylowerTFEs，whileitsleafseemedtobeinsensitivetofloodingstress，andmorebiomasswasaccumulatedinthestem．FortheKoseedling，bettergrowthwasachievedatthemo

4、derateTFEs，withmoreknots，highernumbersofleavesandcableroots，largerleafareas，higherleafconservationrates，andlargerbiomassaccumulation．BgandRsexhibitedsimilartrendsinsurvivalandgrowth，withintensegradientsofresponsestoflooding．Seedlingsofbothspecieshadahighersurviv

5、alrate，quickerstemelongation，largerfoliarareaandconservation，andmorebiomassaccumulationathigherTFEs．2．Theresponsesinphysiologicalparameterstogradientsoffloodingvariedamongthesefivemangrovespecies．ThechlorophyllcontentsinleavesofAmseedlingswerehigherin-40cmand-30

6、cmtreatments．AmongtheTFEof一10cmto30cm，therepresentedanincreaseofChlaandtotalChlwiththedecreasingTFE；whiletheChlbchangedlittle．TheactivitiesofSOD，PODandCATrespondedsimilarlytothefloodingstress，ofwhichhigheractivityoccurredundermoderateTFE．ThecontentsofChla，Chlban

7、dtotalChlofAcseedlingsallincreased，whileChl(a／b)decreasedwiththedecreasingTFE．SODactivitiesinleaveswerehigherinlowerTFEtreatments(-40cmto0cm)thanthoseinhigherTFEtreatments(一10cmto30cm)．SODactivitiesinrootchangedlittleamongdifferentTFEtreatments．PODactivitiesinro

8、otwerehigherundermoderateTFEtreatments，whilehighPODactivitiesInleafoccurredunderlowerTFE．BoththeCATactivitiesinIeafandinrootV全日潮海区红树林造林关键技术的生理生态基础研究werehigherunderlow