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32920119ENVIRONMENTALSCIENCEVol．32No．9Sep．20112100445、SPAD．11.67μmol·m2·s－19.18mmol·m2·s－18.38μmol·m2·s－14.55mmol·m2·s－1、、NH+4-NNO－3-Np0.05．SPADSPAD58.92++SPAD51.14SPADp0.05NH+4-Np0.05．SPADSPAD．SPADX173X506A0250-3301201109-2576-062010-10-132011-01-04409012572010090121975～E-maildefuxu1@163.comEffectofDifferentSubstratesonPhotosyntheticCharacteristicsofIrispseudacorusL．andtheCapacityofPurifyWastewaterXUDe-fuLIYing-xueZHENGJian-weiFANGHuaZHAOXiao-liCollegeofEnvironmentalScienceandEngineeringNanjingUniversityofInformationScienceTechnologyNanjing210044ChinaAbstractTheeffectofthedifferentsubstratesonthephotosyntheticcharacteristicstranspirationrateandSPADvalueandcapacityofpurifywastewaterwasinvestigatedbypotexperimentbasedonfiveordinarysubstratessoilsandmixtureofsoilandsandmixtureofsandandorganicmatterandmixturesandsoilandorganicmatter．ResultsshowedthatthephotosyntheticcharacteristicsandtranspirationrateofIrispseudacorusL．wereinfluencedbydifferentsubstrates．TheorderofthephotosyntheticandtranspirationrateofIrispseudacorusL．insoilwashighandthatofIrispseudacorusL．insandwasthelowest．ThevalueofphotosyntheticcharacteristicsandtranspirationrateofIrispseudacorusL．insoilwere11.67μmol·m2·s－1and9.18mmol·m2·s－1respectivelyandthatofIrispseudacorusL．insandwere8.38μmol·m2·s－1and4.55mmol·m2·s－1respectively．ThephotosyntheticcharacteristicsandtranspirationrateofIrispseudacorusL．weresignificantlycorrelatedwiththeremovalrateofpermanganateindexNH+4-NandNO－3-Np0.05．TheSPADvalueofIrispseudacorusL．wasalsoinfluencedbysubstratesandSPADvalueofIrispseudacorusL．insoilwashigh58.92followedbymixturesoilsandandorganicmatterthatofIrispseudacorusL．insandwasthelowest51.14．ThesignificantcorrelationbetweentheSPADvalueofIrispseudacorusL．andthephotosyntheticcharacteristicstranspirationrateNH+4-Nwasalsofoundp0.05．TheSPADvaleofIrispseudacorusL．indifferentsubstrateswasdifferentwhichwasusedtomonitoredoperationconditionoftheremovalrateofnitrogeninconstructedwetland．KeywordssubstrateIrispseudacorusL．photosyntheticcharacteristicSPADvaluepurifycapacity．．1．COD2．NH+4-NTP89%81%COD70%3．、pH4～6．7～9．DOI:10.13227/j.hjkx.2011.09.0099、、、、10～13．14～16．17．18．、SPAD．11.1、．．12.1g·kg－10.99g·kg－157.9g·kg－170.94g·kg－150.39g·kg－1pH7.2619．．1.2130cm23cm30cm40cm30cm13cm6．3001．5①②③+1∶1+④3%97%+⑤1∶13%++．201037L2IrispseudacorusL．31.0～36.37g·－1315．1.320108、4L1．1Fig．1Experimentalequipment1/mg·L－1Table1Qualityofexperimentalwastewater/mg·L－1NH+4-NNO－3-NTNTP8.021.062.744.560.224dTN、NH+4-N、NO－3-N、TP．1.4PnTrLI-64001200～1300．SPADSPAD-502PnTr6．．、、20．1.5E=V0－V4/4×A1EmL·cm2·d－1V0mLV44dmLAcm2．f=c0×V0－c4×V4/c0×V02f%c0mg·L－1V0mLc44dmg·L－1V44dmL．1.6DPS775232p=0.05．22.12211.67μmol·m2·s－1++11.03μmol·m2·s－18.38μmol·m2·s－1．、+++3p＜0.05．++、+、+1.06、1.1、1.181.39．p＜0.052Fig．2PhotosyntheticcharacteristicofIrispseudacorusL．indifferentsubstrates2.2SPADSPAD3SPAD58.92SPAD51.14．5SPAD＞++＞+＞+＞SPAD+SPADp＜0.05SPADSPAD1.15．2.349.18mmol·m2·s－1++6.78mmol·m2·s－14.55mmol·m2·s－1．5＞++＞+＞3SPADFig．3SPADvalueofleafofIrispseudacorusL．indifferentsubstrates+＞．p＜0.05、+++3p＜0.05．4Fig．4TranspirationrateofIrispseudacorusL．indifferentsubstrates2.455p＜0.05．5＞++＞+＞+＞．45p＜0.01r=0.9599．．2.5、NH+4-N、NO－3-N、875295Fig．5QuantityofevaporationwaterofdifferentsubstratesTNTP2．++p＜0.05．NH+4-NNO－3-N++2NH+4-NNO－3-NNH+4-NNO－3-Np＜0.05．5NH+4-NNO－3-N＞++＞+＞+＞2．TNTN+TN+TNp＜0.05．TP2565.32%～77.68%．21Table2Removalrateofdifferentpollutantbydifferentsubstrates/%NH+4-NNO－3-NTNTP75.13±7.43a90.93±0.52a85.84±0.16a88.20±2.91a77.68±3．53a55.31±0.25c84.65±0.41b66.75±8.51b87.70±0.50ab65.32±3．02a+62.47±9.26bc86.50±1.71ab77.75±5.10ab83.83±0.73b71.00±4．23a+64.41±2.58abc88.81±3.55ab79.92±0.06ab85.01±1.94ab70.06±0．29a++68.71±0.28ab89.74±0.23a83.51±4.56a86.80±0.62ab68.63±10．71a1p＜0.053++．17．211.6g·cm－3．NP22NPN、、23．．3SPADSPADp＜0.05SPAD．24PsⅡ．p＜0.0535＞++＞+＞+＞2、4．SPADSPAD+2p＜0.053．SPADp＜0.01SPADp＜0.053．SPAD．25SPAD．97523231Table3CorrelationanalysisbetweendifferentindexPnTrSPADNH+4-NNO－3-NTNTPPn10.9146*0.9141*0.9710＊＊0.9857＊＊0.9899＊＊0.10360.7876Tr10.9929＊＊0.9732＊＊0.9233*0.8695*0.39120.9053*SPAD10.9707＊＊0.9388*0.86320.45820.848910.9621*0.9521*0.26690.8606NH+4-N10.9556*0.23470.7394NO－3-N1－0.00060.7680TN10.1426TP11*＊＊0.050.01SPAD．3p＜0.01．2．．NH+4-NNO－3-Np＜0.01．26SPADSPAD．27SPAD、．NH+4-N、NO－3-NNH+4-NNO－3-N．TN．89%～96%28．NH+4-NNO－3-N．TPr=0.7876TNr=0.1036．、TNTP．p＜0.055．NH+4-NNO－3-Np＜0.05NH+4-NNO－3-NNH+4-NNO－3-N．SPAD3．SPADSPADSPAD．3SPADNH+4-Np＜0.05NO－3-NSPADNH+4-Nr=0.9388NO－3-Nr=0.8632NH+4-N．41++．2SPAD08529SPAD++SPAD．SPAD．3、、NH+4-N、NO－3-NSPADNH+4-N．SPAD．1XuDFXuJMWuJJetal．StudiesonthephosphorussorptioncapacityofsubstratesusedinconstructedwetlandsystemsJ．Chemosphere2006631344-352．2．J．200622365-68．3．J．200628181-84．4．J．2007272250-254．5NwokeOCVanlauweBDielsJetal．AssessmentoflabilephosphorusfractionsandadsorptioncharacteristicsinrelationtosoilpropertiesofWestAfricansavannasoilsJ．AgricultureEcosystemsandEnvironment2003100285-294．6BubbaMDAriasCABrixH．PhosphorusadsorptionmaximumofsandsforusemedialinsubsurfaceflowconstructedreedbedsasmeasuredbytheLangmuirisothermJ．WaterResearch2003373390-3400．7．J．201031