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©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(,510632):(39900022)(2KM06103S):2002207228;:2003201220:(1973),,E2mail:linqiuqi@21cn.com;,3AuthorforcorrespondenceFoundationitem:TheChineseEducationMinistryGrant,NaturalScienceFoundationofChina(No.39900022)andNat2uralScienceFoundationofGuangdongProvince(No.2KM06103S)Receiveddate:2002207228;Accepteddate:2003201220Biography:LINQiu2Qi,Majoringinaquaticecology.E2mail:linqiuqi@21cn.com:200018a01157115mgöL0100301387mgöL014613m0163213ugöLa423175511,,2,,a222;22,,2,,;2,:,,ReservoirtrophicstatesandtheresponseofplanktoninGuangdongProvinceLINQiu2Qi,HURen,DUANShun2Shan,HANBo2Ping(InstituteofHydrobiology,Ji’nanUni2versity,Guangzhou510632,China).ActaEcologicaSinica,2003,23(6):11011108.Abstract:Thetrophicstatesof18drinkingwatersupplyreservoirsandtheresponseofplanktonweresur2veyedinGuangdongProvincein2000.Totalnitrogen(TN),totalphosphorus(TP)andSecchidiskdepth(SD)variedfrom0.15to7115mgöL,01003to01387mgöLand014to613m,respectively.Theyallshowedhighcorrelationwithchlorophyll2athatvariedbetween016and3213mgöm3.Trophicstateindexes(TSI)basedonTN,TP,SDandchlorophyll2awerebetween2317and5511,withoutapparentseasonalvariation.Amongtheinvestigatedreservoirs,twowereoligotrophic,fouroligo2mesotrophic,threemeso2©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:trophicstatus;plankton;reservoir:100020933(2003)0621101208:Q14,Q938.8,TV697:A,1777mm13km2,398m31998447m3,,511m38131106m3,19831985,74,,X,20a,199899m3,,,,[1],[2],:(Tabellaria)(Cyclotella)(Asterionella)(Fragilaria)(Stephanodiscus)[3],,,[4],,2000,,;1,,618:(C)(K)(O)(Q)(R);(A)(B)(E);(G)(H);(J);(F)(N)(P)(D)(I)(L)(M)(1)200067()1112(),201123X©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.Êtheeastcoastalarea,Ëthewestcoastalarea,ÌBeijiangriverwatershed,ÍDongjiangriverwatershed,ÎHanjiangriverwatershed(34),YSI85;(SD)015m,NH4NNO3NNO2NTNTPCODMn[5]a(Chl.a)015m1L,Chl.a4,Lorenzen[6];,5%,015m2m5L10m,,25L,64Lm,,5%25(64Lm)13(113Lm),(5%)221121111015m273316,161424,,;,3015m,2a,;,,[7,8],,,,,27420Lsöcm,100Lsöcm,70%,(),420Lsöcm2TPTNSDChl.aFig.2TherelationshipsofChl.awithTP,TNandSDrespectivelyChl1a0163214mgöm3,(),(235m)Chl1a,()()Chl1a,SDChl1aSD014613m,,SD016m,SDChl1a(R2=017,2),NH42NNO22NNO32N3,NO32N,NO22N[7],NO22N0100201219mgöL,,2163mgöL,,NO22N01219mgöLNO32NNH42N01084189mgöL0100111542mgöLNO32N,()NH42N,11542mgöLTNTP01157115mgöL0100301387mgöL,;(),TNTP7115mgöL01098mgöL2,TN(R2=0160)TP(R2=0166)30116:©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.öL,[7]CODMn112711mgöL,4mgöLCODMn4mgöL,:CODMn3mgöL,21112,:NPSD[2]Chl1aTNTPSD[1],Chl1aTNTPSD,23175511,,:;2:;:;2:,;19831985(),,,3,,,22;,2,2;2;;,,2(1),148m3,48%,11%,70%,,,89m3,75%,,,,7%,,,21221211,,[9],,,[2]3Fig.3Cyanophytacelldensityinthereservoirsthereservoirsarrangedfromlowtrophicleveltohightrophiclevel,,,(Microcystissp1)(Gloeocapsasp.)(Phormidiumsp.)(Chroococcussp.)(Merismopediasp.)3,,,,2,14187cellsöml,17660cellsöml;2,5818103615103cellsöml,,,1983198534,,,20a401123©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(Staurastrum),(Cos2marium),,,84%,,1%,84%,,2(Chlamydomonassp.)(Scenedesmusspp.),2,,760840cellsöml5Fig.5Diatomcelldensityint