典型河口区硝态氮短程还原成铵的活性氮累积途径研究进展

304Vol．30No．4WATEＲＲESOUＲCESPＲOTECTION20147Jul．2014DOI10．3969/j．issn．1004-6933．2014．04．003S20120100089872010010211974—。[e-mail]510006DNＲA。DNＲA“”。DNＲA。、、DNＲA。X171．1A1004-6933201404-0010-04ActivenitrogenaccumulationmechanismintypicalestuarineregionsbasedondissimilatorynitratereductiontoammoniumJIANGＲanLIZhaoxuZhujiangHydraulicＲesearchInstitutePearlＲiverWaterＲesourcesCommissionGuangzhou510006AbstractInordertoexploretheinternalcausesofaquaticecologicaldeteriorationbybiologicalactivenitrogenaccumulationwhichspecificallyoccursinwaterbodieswecomprehensivelyanalyzethenon-traditionalbiologicalconversionpathsofnitrogencyclingi．e．thepathsofactivenitrogenaccumulationbasedondissimilatorynitratereductiontoammoniumDNＲAinestuarineregions．Studiesofestuarineenvironmentalcharacteristicsandmicrobialecologyshowthatthereexistsevereeutrophicationandlargefluxesofbiologicalactivenitrogeninthesummerintheriparianzonewithrelativelyhightemperatureandsalinity．DNＲAinashallowestuaryisthechainunitfortheoccurrenceofnitrogenconversion．Thesedimentsinahigh-salinityenvironmenthavesufficientcarbonsourcesandcanmeettherequirementsofDNＲAcarbohydratemetabolismfermentation．Thustheymaysatisfytheconditionsforcompetingwiththedenitrificationprocess．WesuggestthatfuturestudiesshouldbefocusedonrelationshipsbetweenestuarineclimatesalinitymicrobespeciesandDNＲA．ThisstudyprovidesabiologicalbasisfortotalnitrogencontrolandeutrophicstatusevaluationinestuarineregionsofChina．Keywordsactivenitrogennitratedissimilatoryreductiontoammoniumestuarineregionsalttidetotalnitrogencontrol“”“”。、。。·01·、。1。。。。－。dissimilatorynitratereductiontoammoniumDNＲA。。、、、DNＲA。2DNＲA、、1-4。①3-4②10%～60%4。1-256。。2080DNＲA78。Santoro120101。8-11DNＲA、DNＲA10%～90%8。DNＲADNＲA10%/DNＲA9。113DNＲADNＲA。TexasFlorida、Flamouth10%～50%110-13。1-。An10LagunaMadreneDNＲA15%～75%15NH+45%～29%29+30N211DNＲA“”。10-13Florida10-13·11·、。DNＲA。DNＲA。DNＲA。14-。15/DNＲA30%。DNＲA。4DNＲA。110-131。DNＲA511-12。Laverman16DNＲA-DNＲA35nmol/cm3·h。Giblin17Parker-、DNＲA13aDNＲA。OＲP、、pH、、、DINDNＲADNＲAOＲP、512。DNＲA、、nrfAnarGnapAnirS817DNＲADNＲA、。N2O+N2NH+4DNＲA3。。。DNＲADNＲADNＲA7NADHpH。DNＲA。、、。DNＲApHDNＲA3-47。5。DNＲADNＲA。DNＲA、、·21·DNＲA、。1SANTOＲOAE．Microbialnitrogencyclingatthesaltwater-freshwaterinterfaceJ．HydrogeologyJournal201018187-202．2GALLOWAYJNTOENSENDAＲEＲISMANJWetal．TransformationofthenitrogencyclerecenttrendsquestionsandpotentialsolutionsJ．Science2008320889-897．3JETTENMSM．ThemicrobialnitrogencycleJ．EnvironMicrobiol2008102903-2909．4HEＲBEＲTＲA．NitrogencyclingincoastalmarineecosystemsJ．FEMSMicrobiolＲev199923563-590．5SEITZINGEＲSP．NitrogencycleoutofreachJ．Nature2008452162-163．6CODISPOTILABＲANDESJACHＲISTENSENJPetal．TheoceanicfixednitrogenandnitrousoxidebudgetsmovingtargetsasweentertheanthropoceneJ．ScientiaMarina200165S285-105．7TIEDJEJM．EcologyofdenitrificationanddissimilatorynitratereductiontoammoniumM．NewYorkJohnWileyandSons1988210-212．8BUＲGINAJHAMILTONSK．HaveweoveremphasizedtheroleofdenitrificationinaquaticecosystemsareviewofnitrateremovalpathwaysJ．ＲevEcolSocAm20075289-96．9GＲUCA-ＲOKOSZＲTOMASZEKJAKOSZELNNIKP．CompetitivenessofdissimilatorynitratereductionprocessesinbottomsedimentofＲzeszówreservoirJ．EnvironProEng20093525-14．10ANSGAＲDNEＲWS．DissimilatorynitratereductiontoammoniumDNＲAasanitrogenlink，versusdenitrificationasasinkinashallowestuaryLagunaMadre/BaffinBayTexasJ．MarEcolProgSer200223741-50．11GAＲDNEＲWSMCCAＲTHYMJANSetal．NitrogenfixationanddissimilatorynitratereductiontoammoniumDNＲAsupportnitrogendynamicsinTexasestuariesJ．LimnolOceanogr200651558-568．12GAＲDNEＲWSMCCAＲTHYMJ．Nitrogendynamicsatthesediment-waterinterfaceinshallowsub-tropicalFloridaBaywhydenitrificationefficiencymaydecreasewithincreasedeutrophicationJ．Biogeochemistry200995185-198．13MULHOLLANDPJHELTONAMPOOLEGCetal．StreamdenitrificationacrossbiomesanditsresponsetoanthropogenicnitrateloadingJ．Nature2008452202-205．14．DINJ．2005255686-692．XUJirongWANGYoushaoYINJianpingetal．TransformationofdissolvedinorganicnitrogenspeciesandnitrigicationanddenitrificationprocessesinthenearseasectionofZhujiangriverJ．ActaScientiaeCircumstantiae2005255686-692．inChinese15．J．20123894-10．WEIZongminHUANGShaobinJIANGＲan．EffectofcarbonondissimilatorynitratereductiontoammoniumprocessJ．IndustrialSafetyandEnvironmentalProtection20123894-10．inChinese16LAVEＲMANAMCANAVANＲWSLOMPCPetal．PotentialnitrateremovalinacoastalfreshwatersedimentHaringvlietLakeTheNetherlandsandresponsetoSalinizationJ．WaterＲes2007413061-3068．17GIBLINAEWESTONNBBANTAGTetal．TheeffectsofsalinityonnitrogenlossesfromanOligohalineEstuarinesedimentJ．EstuariesandCoasts2010331054-1068．2013-09-05檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪96．-J．2007537-42．CHENGHuidongCHENHonghanHEJiangtaoetal．Astudyofindicatorsofanthropogenicinfluenceandwater-rockinteractioningroundwatersystemintheurbanregionofBeijingJ．HydrogeologyandEngineeringGeology2007537-42．inChinese7．J2007372293-297．DUXinqiangQISuwenLIAOZishengetal．InfluenceofartificialrechargeongroundwaterqualityJ．JournalofJilinUniversityEarthScienceEdition2007372293-297．inChinese8．J．200224467-72．XIEJuanJIANGLingLIQuan．Thequalityofartificiallyre