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不同土地利用方式下土壤氨氧化微生物的群落组成和功能特征.docx

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不同土地利用方式下土壤氨氧化微生物的群落组成和功能特征 Title:CompositionandFunctionalCharacteristicsofSoilAmmoniaOxidizingMicrobialCommunitiesUnderDifferentLandUseTypes Abstract: Soilammoniaoxidizingmicroorganisms(AOMs)playacrucialroleinthenitrogencyclebyconvertingammoniatonitriteandnitrate.ThecompositionandfunctionalcharacteristicsofAOMcommunitiesareinfluencedbydifferentlandusetypes,whichcanimpactnutrientcyclingandtheoverallhealthofecosystems.ThispaperaimstoreviewanddiscussthecurrentunderstandingofthecompositionandfunctionalfeaturesofsoilAOMcommunitiesundervariouslandusetypes,includingagricultural,forested,urban,andnaturalecosystems.TheimportanceofunderstandingAOMcommunitydynamicsandfunctionsisalsohighlighted. 1.Introduction 1.1Background 1.2Objectives 2.CompositionofSoilAmmoniaOxidizingMicrobialCommunities 2.1Ammonia-OxidizingBacteria(AOB) 2.2Ammonia-OxidizingArchaea(AOA) 2.3AbundanceandDiversityofAOBandAOAunderDifferentLandUseTypes 3.FunctionalCharacteristicsofSoilAmmoniaOxidizingMicrobialCommunities 3.1NitrificationRates 3.2ResponsetoEnvironmentalFactors 3.3RelationshipwithOtherSoilMicroorganismsandPlantCommunities 3.4ImpactofLandUseChangeonSoilAOMCommunityFunctions 4.EffectsofLandUseTypesonSoilAOMCommunities 4.1AgriculturalLandUse 4.1.1IntensiveAgriculture 4.1.2OrganicFarming 4.2ForestedLandUse 4.2.1ConventionalForestry 4.2.2SustainableForestry 4.3UrbanLandUse 4.4NaturalEcosystems 4.4.1Grasslands 4.4.2Wetlands 4.4.3Deserts 5.ImplicationsandFutureDirections 5.1ImportanceofUnderstandingAOMCommunityDynamics 5.2SoilManagementStrategiestoPreserveAOMCommunityFunctions 5.3FutureResearchDirections 6.Conclusion Thispapercomprehensivelyintroducesthecompositionandfunctionalcharacteristicsofsoilammoniaoxidizingmicrobialcommunitiesunderdifferentlandusetypes.UnderstandingthedynamicsofAOMcommunitiesisvitalforecosystemhealthandsustainablelandmanagement.FurtherresearchisneededtofillthegapsinourcurrentknowledgeandtodevelopeffectivestrategiesforpreservingAOMcommunityfunctionsunderchanginglanduseconditions.