模拟酸雨对冬小麦_大豆轮作农田土壤呼吸_硝化和反硝化作用的影响_史艳姝

EffectsofSimulatedAcidRainonSoilRespiration,NitrificationandDenitrificationinaWinterWheat-SoybeanRotationCroplandSHIYan-shu1,2,CHENShu-tao1,2,3*,HUZheng-hua1,2,SHENXiao-shuai1,2,ZHANGYong1,2（1.JiangsuKeyLaboratoryofAtmosphericEnvironmentMonitoringandPollutionControl,NanjingUniversityofInformationScienceandTechnology,Nanjing210044,China;2.SchoolofEnvironmentalScienceandEngineering,NanjingUniversityofInformationScienceandTechnology,Nanjing210044,China;3.TheStateKeyLaboratoryofAtmosphericBoundaryLayerPhysicsandAtmosphericChemistry,InstituteofAtmosphericPhysics,ChineseAcademyofSciences,Beijing100029,China）Abstract：Inordertoinvestigatetheeffectsofsimulatedacidrainonsoilrespiration,nitrificationanddenitrificationinacroplandunderwinterwheat-soybeanrotation,randomizedblockexperimentswerecarriedoutinthecropland.4blockswerearrangedandtherewere4acidraintreatments,whichwerecodedasA1（pH=6.7）,A2（pH=4.0）,A3（pH=3.0）andA4（pH=2.0）ineachblock.AportablesoilCO2fluxessystem（LI-8100）wasusedtomeasuresoilresp