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1、三峡大学硕士学位论文fromtheendofXXBtoestuary.ConcentrationofD-Siwaslowerinspringandsummerandhigherinautumnandwinter,itwashigheratestuaryandloweratothersections,besides,thespacedifferencein2011wassmallerthan2010.(3)Themodelofsuccessionofthephytoplanktoncommunitystruc
2、tureinXXBAccordingtotheecologicalfunctionalgroup-environmentresponserelationshipinthemodelofCCA,concentrationofN,Pdidn’tsignificantlyeffectphytoplanktoncommunitysuccessionandtheconcentrationofD-Sihasalimitedinfluenceonphytoplanktoncommunitysuccession,which
3、onlyforBacillariophyta.Seasonalvariationoflightandtemperatureandhydrodynamicconditionsweretheprimarydeterminantsinphytoplanktoncommunitysuccession.Phytoplanktondisplayedanobvioussuccession,fromstress-tolerators(S)toruderals(R)andcompetitors(C)inspring.Insu
4、mmer,itdisplayedanoppositesuccession,fromcompetitors(C)toruderals(R)andstress-tolerators(S).Phytoplanktoncomposedoflotsofalgaeinautumnandstress-tolerators(S)wasthepredominantspeciesinwinter.(4)Ecologicalsectionsandtheresponsemechanismofphytoplanktoncommuni
5、tystructuretoreservoirschedulinginXXB.EcologicalsectionsweredifferentinXXBwiththeseasonalvariationandreservoirscheduling.XXBwasdividedintothreeareasinthepre-floodfallingstage,CJXX-XX03,XX04-XX07andXX08-XX10.Inthefloodstage,itwasalsodividedintothreeareas,CJ
6、XX,XX00-XX03andXX04-XX09.Itwasdividedintothreeareasintheimpoundmentperiod,CJXX-XX05,XX06-XX08andXX09-XX10.Inthedryperiod,Itwasdividedintotwoareas,CJXX-XX07andXX08-XX10.Phytoplanktoncommunitystructurewasmainlyaffectedbystratificationofwatercolumnandtheratio
7、(Zeu/Zmix)ofeuphoticdepth(Zeu)tomixingdepth(Zmix)neartheupstream.Itwasaffectedbystratificationofwatercolumnandnutrientconcentrationatmidstream.Allfactorshadacertaininfluenceonphytoplanktoncommunitystructurenearthedownstream.Keywords:ThreeGorgesReservoirXia
8、ngxiBayphytoplanktoncommunitystructurephytoplanktonhabitatcharacteristicssuccessionVI三峡大学硕士学位论文目录1绪论............................................................................................................
