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1、基于农业多功能视觉的都市农业用地效益时空变化研宄（英文）以西安都市圈为例CollegeofTourismandEnvironment，ShaanxiNormalUniversityZhouZhongxue(1972-),PhDandAssociateProfessor,specializedinlandresourceandlanduseevaluation,urbanizationanditsimpactonurbanagriculturaldevelopmentandecosystemservices
2、.bined,thesefactorscausepoorlanduseefficiency-Underthesecircumstances,comprehensivelyassessinglanduseefficiencyforurbanagricultureisakeyissueinlanduseresearch.Currently,evaluationmethodsforagriculturallanduseefficiencynarrowlyconcentrateonaspectsofeconomi
3、cinputandoutput.However,urbanagro-ecosystemscanprovidediverseeconomic,social，andecologicalservicesandfunctions.Inparticular，thesocialandecologicalservicesandfunctionsoriginatingfromagriculturalland,whichhaveahighervaluethaneconomicservices,playasignifican
4、troleinensuringregionalsocial,ecological,andenvironmentalsecurity.However,recentresearchhasrarelytakenthesebenefitsintoconsideration.Therefore,landusevaluehasbeengreatlyunderestimated,whichhasresultedinmishandledandpoorlandusepolicies.Inthisstudy,weapplyL
5、andsatimageryandsocialandeconomicstatisticaldatafortheXi’anmetropolitanzone(XMZ)toinvestigateagriculturalmulti-functionality.Wedevelopanevaluationframeworkforurbanagriculturallanduseefficiencyandidentifyagro-ecosystemservicesandfunctionsasimportantoutputs
6、fromagriculturalland.Thelanduseefficiencyofurbanagricultureisthenevaluatedusingecosystemservicesmodels,providingamechanismforassessingspatial-temporalchangesinlanduseefficiencyintheXMZfrom1999to2015.Fourimportantconclusionsarereachedfromthisanalysis.First
7、,therapidurbanizationandagriculturaltransformationfromtraditionalcerealcultivationtomodernurbanagriculturehasresultedinsteadilyincreasingcosts,outputs,andlanduseefficiencyofurbanagriculture.Thetotaloutputvalueincreased41%andlanduseefficiencyperhectareincr
8、easedby33.13%onaverage.Second,thespatialpatternsofcomprehensiveoutputandlanduseefficiencyweredominatedbyeconomicoutputsfromagriculturalland.Areasnearcities,whicharedominatedbyorchardandarableland,providemoreeconomic
