简介:Inthispaper,theauthorusessuper-efficiencyDEAmodeltomeasurethenationalandregionalenergyefficiencyinChina;usingspatialeconometricmodelandfromtheperspectiveofgeo-spatialspillover,theauthorinterpretsthespatialcharacteristicsofenergyefficiencyandextractsthemainfactorsthatinfluencetheregionalenergyefficiency.Theanalysisresultsshowthat:(1)thenationalandregionalenergyefficiencyisconsistentwithinvertedU-shapedcurve,andthenationwideenergyefficiencygapisincreasing;(2)energyefficiencyhastheobviouseffectofthespatialexternaleffect,andwhenthegovernmentmakesenergysavingstrategies,inter-regionalenergycooperationandtheproliferationofadvancedproductiontechnologyshouldbegivenmorepriority;(3)energyefficiencyhassignificantnegativecorrelationwithgovernmentintervention,industrialstructure,ownershipstructure,theenergyconsumptionstructure,andresourceendowments,andhaspositivecorrelationwiththedegreeofopening-upandenergyprice.
简介:TheTaoerRiverbasinistheepitomeinthewestofNortheastChinaanditisoneofthemostfragileandsensitiveecoregions.Thus,protectionofwaterqualityoftheTaoerRiverisimportant.Notonlypointsourcepollutionbutnon-pointsource(NPS)pollutionresultsindeterioratingwaterquality.Inthisstudy,long-termhydrologicimpactassessmentmodelwasusedtoevaluatetheimpactsoflandusechangeimpactsonNPSpollution,andthereplacementcostmethodwasusedtocalculatetheeconomiclosscausedbyNPSpollution.ThroughanalyzingtheNPSpollutantloadsofdifferentlandcategoriesandtheeconomicloss,thearticleputsforwardthatthereexistsacloserelationshipbetweenland-usetypesandNPSpollution,andagriculturalpollutionisthemaincomponentoftheNPSpollutioninthisarea.Theresultsofthisstudycanprovidedecision-makingbasisforagriculturaldevelopmentandland-usechange.