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、＊周小平 王建国 薛利红 徐晓峰 杨林章＊＊(,210008)【】 (Ipomoeaaquatica)、(Oenanthejavanica),N、PN2O.,N、P,N、P40.32%～63.87%,N、P.,,NH+4-N,NO-3-N.N2O.N2O,17.14μgN·m-2h-1,85.08μgN·m-2h-1,37.38μgN·m-2·h-1. N、P N2O 1001-9332(2005)11-2199-05 X171.4 ANandPremovalcharactersofeutrophicwaterbodyunderplantedfloat.ZHOUXiaoping,WANGJianguo,XUELihong,XUXiaofeng,YANGLinzhang(InstituteofSoilScience,ChineseAcademyofSciences,Nanjing210008,China).-Chin.J.Appl.Ecol.,2005,16(11):2199～2203.ThestudyontheNandPremovalandN2OreleaseofeutrophicwaterbodyunderplantedfloatIpomoeaaquati-caandOenanthejavanicashowedthatplantedfloathadagoodeffectontheremovalofNandPfromeutrophicwaterbody.ThebioaccumulationofNandPbytheplantsaccountedfor40.32%～63.87%oftheNandPre-moval,respectively,suggestingthatplantuptakewasthemainremovalprocess.Withinthetreatingperiod,therewasarapidandsufficientnitrificationbutaslowandinsufficientdenitrificationintheplantedfloatsystem,andthereby,plantedfloatsystemhadahighNH+4-NremovalrateandNO-3-Naccumulation.ThepresenceofplantedfloatreducedthereleasefluxofN2O,whichwas17.14μgN·m-2·h-1forIpomoeaaquatica,37.38μgN·m-2·h-1forOenanthejavanica,and85.08μgN·m-2·h-1forthecontrol.Keywords Eutrophication,Plantedfloatsystem,NandP,Nitrificationanddenitrification,Removal,N2O.＊“”(2002AA601012).＊＊.2004-11-23,2005-05-23.1 ,N、P[8].,[10]、[1,30]、[20,25]、[2,3,12,13,15,23]().,,,.:,,;,,;,,[12].,,[24]、[2～4,13][13][15,23]、[11]、[4],[4,18].,.N-N(N2ON2),.NN[9,10,27,28].P[6,17,22].,.,N2O.2 2.1 (Ipomoeaaquatica)(Oenanthejavanica) 200511 16 11 CHINESEJOURNALOFAPPLIEDECOLOGY,Nov.2005,16(11)∶2199～2203DOI:10.13287/j.1001-9332.2005.0318,2.,,N、P1.1 N、PTable1ConcentrationofNandPinthetestedwaters(mg·L-1)TNNH+4-NNO-3-NTPPO3-4-PConcentration25.41±2.4322.81±2.110.47±0.353.51±0.542.82±0.532.2 (50cm×40cm),PVC(68cm×48cm×42cm),“4×3”12,31,,3,,2.10d,18cm,59L..,2、57d.N2O.,,,.0、0.51.0h,2min,,.(),2004524～200483,70d.6237131,83,723.2.3 TN、NH+4-N、NO-3-N、TP、PO3-4-P.[26]:TNK2S2O8;NH+4-N;NO-3-N-N;TP;PO3-4-P,SkalarSA-4000N、P.N2OHP5890Ⅱ,0.1%～0.4%,N2O[29].、,N、P,N、PH2SO4-H2O2[14],pH.N、P:(%)=(Ci-Ce)/Ci×100%,Ci,Ce.3 3.1 TN、NH+4-NNO-3-NTN.NH+4-N,98%,NH+4-N(1).NO-3-N,,2.2,NO-3-N,NH+4-NNO-3-N.1 TNNH+4-NFig.1DynamicchangesofremovalratesofTNandNH+4-Nindifferenttreatments. N,TN,(2).2d,TN,,TN,TN,TN..4,NN.NO-3-N,5d,,,NO-3-N,NO-3-2 NO-3-NTable2ConcentrationofNO-3-Nbeforeandaftertreatmentindifferenttreatments(mg·L-1)Types6.036.136.237.037.137.238.03Influent0.220.030.060.050.671.280.13CK13.72±0.2614.19±0.0914.96±0.5410.60±0.1313.76±0.1713.67±0.4513.71±0.49Ipomoeaaquatica7.33±0.864.02±0.769.77±0.903.19±0.914.13±1.186.03±1.585.15±1.54Oenanthejavanica12.12±0.276.41±0.257.05±0.758.94±0.1711.60±0.2212.19±0.15--Plantshadbeenharvested.2200 162 TNNH+4-NNO-3-NFig.2DynamicchangesofremovalratesofTNandconcentrationofNO-3-NandNH+4-Nindifferenttreatmentsundertreatmenttime.N.NO-3-N,(2),,NO-3-N.NH+4-N,.NH+4-NNO-3-N(2),NH+4-NNO-3-N,NO-3-N,NO-3-N.,NO-3-N[7,16].,NH+4-N,NO-3-N.,,,N.,NH+4-N[29],N,.3.2 TPPO+4-PP、、.TP85%,TP460%,310%.(3).3TP:623、72383,,,,,,P,P,,,P,.P,,、PP.PP,P(4).PO+4-PTP.3 TPPO3-4-PFig.3DynamicchangesofremovalratiosofTPandPO3-4-Pindifferenttreatments.3.3 N2O,N2O,7.433.23,N2O2.30(3).,N2O,2.N2O17.04～85.08μgN·m-2·h-1,[29]、[21][19],.N2O5～10[5].220111 :、 3 N2ONO-3-NTable3ReleasefluxofN2OandconcentrationofNO-3-Nbeforeandafterwater-exchangeItemBeforewater-exchangeNO-3-NConcentrationofNO-3-N(mg·L-1)N2O-NReleasefluxofN2O-N(μg·m-2·h-1)Afterwater-exchangeNO-3-NConcentrationofNO-3-N(mg·L-1)N2O-NReleasefluxofN2O-N(μg·m-2·h-1)Average(μg·m-2·h-1)CK13.52±1.37141.08±27.310.22±0.0429.08±6.0085.08Ipomoeaaquatica5.66±2.2818.98±8.190.03±0.0115.31±12.9617.14Oenanthejavanica9.72±2.6143.67±18.740.05±0.0031.09±3.9337.384 、Table4Plantbiomass,bioaccumulationnutrientsandremovalnutrientsindifferenttreatmentsItemCKIpomoeaaquaticaOenanthejavanicaTotalDW(g·m-2)-290.90＊±52.48 167.89±17.52 Relativegrowthrate(g·m-2·d-1)12.75±2.308.58±0.89NRemoval(g·m-2)5.91±0.4021.11±2.3015.20±0.28 Bioaccumulation(g·m-2)-12.01±2.336.13±0.86(%)-56.8740.32N2O-N(mg·m-2)142.95±17.89 28.80±12.9053.83±15.38(%)2.420.140.35PRemoval(g·m-2)1.13±0.093.62±0.272.91±0.09Bioaccumulation(g·m-2)-2.33±0.181.29±0.40(%)-63.8744.29＊2IncludingmowedandharvestedDW. N2O,(3).:2,,,;;,NO-3-N,.N,,N2O,(3).[10,28],:1),,;2),,,-,,;3)———N,NO-3-N,2;4)pH,8.0.、,N2O,N2O.Diemo[5],、、、,,,pH6,N.,[9].,,N.,N.,,N,,NO-3-NN.3.4 .,,N、P(4).N、P56.87%63.87%,40.32%44.29%(4),N、P,N、P“”,.NN30%[10,27],N、P,[12].,,.N2ONN,2.42%,N.4 4.1 N、P2202 16.、TN63.37%、46.40%19.76%,TP95.60%、88.44%40.08%.4.2 N、P40.32%～63.87%.N、P.4.3 ,,,NH+4-N,NO-3-N.N,.4.4 N2O,N2O,N2O,.N2O-NN. ,,.1 BorinM,VianelloM,MorariF,etal.2005.EffectivenessofbufferstripsinremovingpollutantsinrunofffromacultivatedfieldinNorth-EastItaly.AgricEcosystEnviron,105:101～1142 ChengS-P(),DingS-R(),HuZ-M().1991.Thestudyofpurificationofwaterspinachplantedonartificialsubstrataonfilaturewastewater.EnvironSci(),12(4):47～51(inChinese)3 DaiQ-Y(),ChenZ( ).1993.PurificationofbeerwastewaterbyLo