来自厌氧铵氧化的氮损失的证据在潮间带湿地中与铁铁还原相结合

EvidenceofNitrogenLossfromAnaerobicAmmoniumOxidationCoupledwithFerricIronReductioninanIntertidalWetlandXiaofeiLi,†,§LijunHou,*,‡,§MinLiu,*,†YanlingZheng,‡GuoyuYin,‡XianbiaoLin,†LvCheng,†YeLi,†andXiaotingHu††CollegeofGeographicalSciences,and‡StateKeyLaboratoryofEstuarineandCoastalResearch,EastChinaNormalUniversity,3663NorthZhongshanRoad,Shanghai200062,China*SSupportingInformationABSTRACT:Anaerobicammoniumoxidationcoupledwithnitritereductionisanimportantmicrobialpathwayofnitrogenremovalinintertidalwetlands.However,littleisknownabouttheroleofanaerobicammoniumoxidationcoupledwithferricironreduction(termedFeammox)inintertidalnitrogencycling.Inthisstudy,sedimentslurryincubationexperimentswerecombinedwithanisotope-tracingtechniquetoexaminethedynamicsofFeammoxanditsassociationwithtidalfluctuationsintheintertidalwetlandoftheYangtzeEstuary.Feammoxwasdetectedintheintertidalwetlandsediments,withpotentialratesof0.24−0.36mgNkg−1d−1.TheFeammoxratesinthesedimentsweregenerallyhigherduringspringtidestha