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1、SoilBiology&Biochemistry42(2010)865e877ContentslistsavailableatScienceDirectSoilBiology&Biochemistryjournalhomepage:www.elsevier.com/locate/soilbioReviewDynamicsofcarbonandnitrogeninanextremealkalinesalinesoil:AreviewLucDendooven*,RocioJ.Alcántara-Hernández,CesarValenzuela-Enci
2、nas,MarcoLuna-Guido,F.Perez-Guevara,RodolfoMarschLaboratoryofSoilEcology,GIB,Cinvestav,Av.InstitutoPolitecnicoNacional,2508,SanPedroZacatenco,C.P.07360,MexicoCity,MexicoarticleinfoabstractArticlehistory:ThesoiloftheformerlakeTexcocoisan‘extreme’alkalinesalinesoilwithpH>10andele
3、ctrolyticReceived11August2009conductivity(EC)>150dSm1.Theseconditionshavecreatedauniqueenvironment.ApplicationofReceivedinrevisedformwastewatersludgetoTexcocosoilshowedthatlargeamountsofNHþwereimmobilized,NOwasreduced4312February2010aerobically,NO2wasformedandthemineralizati
4、onoftheorganicmaterialinthesludgewasinhibited.Accepted16February2010AseriesofexperimentswereinitiatedtostudytheprocessesthatinhibitedthedecompositionoforganicAvailableonline5March2010materialandaffectedthedynamicsofmineralN.ThelargeECandpHinhibitedthedecompositionofeasilydecomp
5、osableorganicmaterialsuchasglucoseandmaize,althoughcellulolyticactivitywasobservedinKeywords:114soilwithpH9.8andEC32.7dSm.ThehighsoilpHfavouredNH3volatilizationofapproximatelyC-labelledglucose50mgNkg1soilwithinadayandasimilaramountcouldbefixedonthesoilmatrixduetothedispersedAe
6、robicnitratereductionmineralsandtheirvolcanicorigin.SoilmicroorganismsimmobilizedlargeamountsofNHþwithinadayAmmoniavolatilization4whenglucosewasaddedtosoilinexcessofwhatwasrequiredformetabolicactivity.RemovalofNOfromAmmoniumfixation3Cellulolyticactivitysoilamendedwithglucosewas
7、notinhibitedby100%OandNHþindicatingthatthecontributionof24DenitrificationdenitrificationandassimilatoryreductiontothereductionofNOwasminimalwhiletheformationofNO32Dynamicsofammonium,nitriteandnitratewasnotinhibitedby0.1%acetylene,knowntoinhibitnitrification.Additionally,thereduc
8、tionofNOinthe3EmissionofCO2andN2Oglucose-amendedalkal
