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黄河流域干旱区湖泊冰封期浮游植物群落结构特征及影响因子研究.docx

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黄河流域干旱区湖泊冰封期浮游植物群落结构特征及影响因子研究 Title:StudyontheStructuralCharacteristicsofPhytoplanktonCommunityandInfluencingFactorsduringtheIce-boundPeriodintheAridZoneoftheYellowRiverBasin Abstract: Lakeecosystemsplayavitalroleintheregionalclimatesystemandprovideimportantecologicalservices.Theice-boundperiodinthearidzoneoftheYellowRiverBasinposesuniquechallengestothephytoplanktoncommunityanditsstructure.Understandingthestructureandinfluencingfactorsofphytoplanktoncommunitiesduringthisperiodiscrucialforeffectivelakemanagementandconservation.Thisstudyaimstoinvestigatethestructuralcharacteristicsofphytoplanktoncommunitiesduringtheice-boundperiodinthearidzoneoftheYellowRiverBasinandidentifythemajorinfluencingfactors. Introduction: Theice-boundperiodposesseveralchallengestothephytoplanktoncommunityinlakeecosystems,suchasreducedlightavailability,limitednutrientsupply,andlowtemperatures.Thesefactorscansignificantlyaffectthediversity,abundance,andcompositionofphytoplanktoncommunities.Understandingthesefactorsandtheirinfluencesonthephytoplanktoncommunityduringthisperiodiscrucialforevaluatingtheecosystemhealthanddevelopingeffectivemanagementstrategies. Methods: ThestudyareaconsistedofseveralrepresentativelakesinthearidzoneoftheYellowRiverBasin.Watersampleswerecollectedduringtheice-boundperiod,andphytoplanktoncommunitieswereassessedusingmicroscopyandmoleculartechniques.Environmentalparametersincludingwatertemperature,nutrientconcentrations,andlightavailabilitywerealsomeasured.Statisticalanalysessuchasmultivariateanalysisandcorrelationanalysiswereperformedtoidentifytherelationshipsbetweenphytoplanktoncommunitystructureandenvironmentalfactors. Results: Preliminaryresultsrevealedthatthephytoplanktoncommunityduringtheice-boundperiodinthearidzoneoftheYellowRiverBasinexhibitedspecificstructuralcharacteristics.Thedominanttaxaweretypicallycold-adaptedspecies,suchasdiatomsandgreenalgae.Theabundanceanddiversityofthephytoplanktoncommunityweresignificantlyinfluencedbyseveralkeyenvironmentalfactors,incl