低温域湿地植物根际氮转化强度黄娟

416201111JOURNALOFSOUTHEASTUNIVERSITYNaturalScienceEditionVol．41No．6Nov．2011doi10．3969/j．issn．1001－0505．2011．06．0202100960～15℃、、10．、10℃、0.85mg/kg·h、0.21mg/kg·hpH．、、．X522A1001－0505201106-1231-05NitrogentransformationintensityinwetlandplantrhizosphereareaatlowtemperatureHuangJuanLiZhenZhangJianZhuLizhiCuiMingxunLiZhuoxianSchoolofCivilEngineeringSoutheastUniversityNanjing210096ChinaAbstractNitrogentransformationintensityinrhizospheresoiloftendifferentwetlandplantssuchasacoruscalamusphragmitesaustralisandtyphaorientalisatlowtemperatures0to15℃arecom-paredinthispaper．Theresultsindicatedthatintensityofammonificationanddenitrificationdecreasewithdecreasingtemperaturenitrificationintensitydecreasesharplywhilethetemperatureisunder10℃denitrificationintensityisobviouslyhigherthannitrificationintensityinplantsrhizospherethedifferenceofplantspecieshasgreatimpactonammonificationandnitrificationintensitytyphaori-entalishasthestrongestammonificationwhichis0.85mg/kg·hwhilesagittariasagittifoliahasthestrongestnitrificationwhichis0.21mg/kg·hplantspecieshasnoobviouseffectondenitri-ficationandpHinrhizospheresoil．Afterthecomprehensiveassessmenttyphaorientalislythrumsalicariaandphragmitesaustralisareselectedoutfornitrogenremovalinwetlandsatlowtemperaturebecauseoftheirstrongernitrogentransformationstrengthinrhizospheresoil．Keywordslow-temperaturewetlandplantrhizospherenitrogentransformationintensity2011-05-17．1980—[e-mail]．5090901951079029、3205000503．．J．20114161231-1235．doi10．3969/j．issn．1001－0505．2011．06．020、、1-3．、、、4-6．、．、、7．．．8-910℃15℃．10．、、．0～15℃10、．11.1acoruscalamus、lythrumsalicar-ia、scirpusvalidus、sagittariasagittifo-lia、iristectorum、thaliadeal-bata、pontederiacordata、phrag-mitesaustralis、typhaorientalisacorustatarinowii．201011．1.210100.5m0.3m．0.2m0.25m．．10．201012201142．、、20pH．1.3110g0.2%2mL50%～60%．28℃2d．2mol/LKCl40mL1h．．10g．．．2、11．、．3pH204g1∶51mol/LKCl20mLpHpH．1.4SPSS17.0．22.1、、．．101．1110．．28～30℃10～5℃．0.85mg/kg·h、2321410.45mg/kg·h．．2.2、、NO3-N90%12．10、2．2、2a13．10～15℃5～10℃0～5℃．10℃10℃．0～5℃5～10℃．0～5℃5～10℃10～15℃．0.21mg/kg·h、0.13mg/kg·h．2b10．10．．14.56mg/kg·h11.20mg/kg·h．11/、0.5751.60mg/kg·h．、0.1813.00mg/kg·h．、．2.3pH14pH①②③、H+．Tao15pH．10pH1．110pH12-0212-1712-3001-1401-2702-1303-0303-174.714.875.455.875.736.225.966.005.604.705.035.766.006.026.216.446.155.795.085.105.686.005.746.326.626.145.844.874.855.545.635.426.106.466.405.665.044.805.565.545.506.346.246.235.665.175.085.655.516.006.066.426.255.774.945.035.625.785.775.926.316.045.674.934.755.545.665.666.036.516.075.644.674.775.545.525.725.746.256.055.534.754.635.425.235.275.545.895.815.32Vs=σ/μ=0.02．332161pH．pHpH．、、pH7～816．pHJanjit17．2.4．、、0.200.080.05、pH．、、0.40.40.2．．2．2IAINID0.240.340.190.770.330.380.190.900.260.330.180.770.230.400.190.820.280.240.180.700.250.290.180.720.210.300.180.690.300.330.200.830.400.370.150.930.250.340.160.75IAINID．2、．．310～15℃．、10℃．20.85mg/kg·h、0.21mg/kg·h、14.56mg/kg·h．3、pH．．410．、、．References1RyszardBSadzideMB．SoilcloggingphenomenainconstructedwetlandswithsubsurfaceflowJ．WaterScienceTechnology1997355183-188．2．J．20082982177-2182．YangXinpingZhouLixiangDaiYuanyuanetal．RemovalefficiencyofCandNinmicro-pollutedriverthroughasubsurface-horizontalflowconstructedwetlandJ．EnvironmentScience20082982177-2182．inChinese3．J．20082982166-2171．YeJianfengXuZuxinLiHuaizheng．Dynamicruleoforganicmatterremovalinvertial-flowconstructedwet-landJ．EnvironmentScience20082982166-2171．inChinese4FangCWRadosevichMFuhrmannJ．Characteriza-tionofrhizospheremicrobialcommunitystructureinfivesimilargrassspeciesusingfameandbiologyanlysesJ．SoilBiology＆Biochemistry2001334679-682．5．J．20082881549-1554．ChengYonghuaWuXiaofuJiangLijuanetal．ScreeningandevaluationofplantpurificationpotentialforphytoremediationofsanitarysewageJ．ActaSci-entiaeCircumstantiae20082881549-1554．inChinese6GraystonSJVaughanDJonesD．Rhizospherecar-bonflowintreesincomparisonwithannualplantstheimportantofrootexudationanditsimpactonmicrobialactivityandnutrientavailabilityJ．AppliedSoilEcolo-gy19975129-56．7．、432141J．1999334575-578．ZhangHongChengGuangrongWuZhenbinetal．ThestudyontherelationshipbetweenNPremovingratesandthedistributionofbacteriaintwoartificialwet-landsJ．JournalofCentralChinaNormalUniversityNaturalSciences1999334575-578．inChinese8CooksonWRCornforthISRowarthJSetal．Win-tersoiltemperature2-15℃effectsonnitrogentrans-formationsinclovergreenmanureamendedorunamend-edsoilsalaboratoryandfieldstudyJ．SoilBiology＆Biochemistry200234101401-1415．9BrodrickSJCullenPMaherWetal．DenitrificationinanaturalwetlandreceivingsecondarytreatedeffluentJ．WaterResearch1988224431-439．10WerkerAGDoughertyJMMcHenryJLetal．TreatmentvariabilityforwetlandwastewatertreatmentdesignincoldclimatesJ．EcologicalEngineering20021911-11．11．J．200729137-3943．ZhengRenhongDengShihuaiLiYuanweietal．NitrificationanddenirtrificationinsurfaceflowwetlandJ．EnvironmentalPollutionandControl200729137-3943．inChinese12LinYEJingSRWangTWetal．Effectofmac-rophytesandexternalcarbonsourceonnitrateremovalfromgroundwaterinconstructedwetlandsJ．Envi-ronmentalPollution20021193413-420．13．J．200