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1、英文摘要ABSTRACTWater-level-fluctuatingzone(WLFZ)wasformedbytheperiodicfloodedwaterofThreeGorgesReservoir(TGR).Regardasthecohesionzonebetweenthewaterandlandarea,theimpactofWLFZonreservoirwaterenvironmentismorecomplex.Duringtheexposedperiod,theWLFZcaninterceptandfilterpolluta
2、nts,cutdowntheamountofcarbon,nitrogenandphosphorustointothewaterbody.Atthesametime,carbon,nitrogenandphosphorusinthesoilcanalsoenterthewaterbodybythewaysofrunoff,soilerosion,etc.Duringthefloodedperiod,theorganicresiduesfromthedeclineandfallofvegetationontheWFLZenterintow
3、aterbodyinevitably,thenreleasecarbon,nitrogen,phosphorusafterdecomposition.Atthesametime,therearecomplexmaterialexchangeandmigrationprocessbetweenthesoilofWLFZandtheoverlyingwater.ThealternationofwettinganddryingofWLFZmakesWLFZbecomethesourceorsinkofcarbon,nitrogenandpho
4、sphorus.Therefore,thestudyofregularityandinfluencefactorsofcarbon,nitrogenandphosphorusreleasefromsoakedplantsandthefluxofnitrogenandphosphorusofWLFZintheTGRhasgreatpracticalsignificance.Thispaperhasstudiedthecharacteristicsandinfluencefactorsofcarbon,nitrogenandphosphor
5、usreleasefromsoakedplants.Accordingtotheestablishedestimationmodelandquantitativestudyofnitrogenandphosphorusmigrationtransformationway,thefluxofnitrogenandphosphorusofWLFZarecalculated.Theconclutionsofthestudyareasfollows:①Theresultsofindoorsimulationexperimentshowthat:
6、Thedecompositionofsoakedplantsmakethewaterproducepeculiarsmell,andcausethewatercolormore,thedecreaseofpH,theincreaseofEh,thedecreaseofDO.ThemaximalunitcumulativereleaseamountandthereleaserateexistsignificantdifferencebetweenCynodondactylon,Hemarthriaaltissima,Echinochloa
7、crusgalli,Setariaviridis,Digitariasanguinalis.Themaximalunitcumulativereleaseamountsoftotalorganic-1carbon(TOC)are21.03~43.65mg·g,accountfor5.3%~10.7%ofplantinitialmatrix-1-1carboncontent,thereleaseratesare1.48~2.91mg·g·d.Themaximalunitcumulative-1releaseamountsoftotalni
8、trogen(TN)are0.50~3.23mg·g,accountfor4.5%~25.4%of-1-1plantinitialmatrixnitrogencontent,thereleaseratesa
