Page 92 - 《水资源与水工程学报》2023年第5期
P. 92

! 34 " ! 5 #                      & ' ( ) & * + , -                               Vol.34No.5
               2023 $ 10 %              JournalofWaterResources&WaterEngineering                 Oct.,2023

            DOI:10.11705/j.issn.1672-643X.2023.05.10


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                  Effectsofdifferentrainfallintensitiesonthephytoplanktoncommunity

                  structureofsubtropicalsourcewaterreservoirsanditsdrivingfactors

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                                   BAIYunhao ,HUANGTinglin ,MIAOWeiming
              (1.KeyLaboratoryofNorthwestWaterResources,EnvironmentandEcology,MinistryofEducation,SchoolofEnvironmentaland
                MunicipalEngineering,Xi’anUniversityofArchitectureandTechnology,Xi’an710055,China;2.ShaanxiProvincialKey
                   LaboratoryofEnvironmentalEngineering ,SchoolofEnvironmentalandMunicipalEngineering,Xi’anUniversityof
                                          ArchitectureandTechnology,Xian710055,China)

                 Abstract:PhytoplanktonsurveyswerecarriedoutinMayandJune2022aroundtwodifferentintensities
                 ofrainfalleventstobetterunderstandhowrainfallaffectthephytoplanktoncommunitystructureinsub
                 tropicalreservoirs.Incombinationoftaxonomicandfunctionalgroupclassificationmethods ,thevariabili
                 tyofphytoplanktoncommunitiesbeforeandafterthetworainfalleventswereexaminedinthisstudyusing
                 nonmetricmultidimensionalscaling(NMDS),andthedrivingfactorsbehindthestructuralsuccessionof
                 phytoplanktoncommunitieswereinvestigatedusingredundancyanalysis (RDA)andvariancepartitioning
                 analysis(VPA).Theresultsshowedthat125speciesofphytoplanktonweredetectedin8phylaand69
                 genera ,andthefunctionalgroupsweredividedinto11species,amongwhichS1,SN,MP,andNwere
                 themainfunctionalgroups.ThephytoplanktoncommunitystructurechangedbeforeandafterRainfallI
                 andRainfall Ⅱ.ThephytoplanktoncommunityevolvedfromCyanobacteriatoBacillariophytainRainfall
                 Ⅰ,andBacillariophytaweredominantduringtherainyperiod;whereasCyanobacteriawerealwayscom
                 pletelydominantinRainfallⅡ,duringwhichthephytoplanktoncommunityevolvedslightlyfrom

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