简介:Thethree-dimension(3D)ecologicalfootprintmakestheanalysisoftherelationshipsbetweenthedemandandsupplyofnaturalcapitalmorecrediblebyimportingfootprintdepthandfootprintsize.ThisarticleusedChina’sregionsastheobjecttoanalyzethehigh-levelsustainabilityofthenaturalcapitalfromtheviewof'ecology-efficiency-fairness'multidimensionalframework.ResearchshowedthatChina’secologicalfootprinthasrisenwhilebio-capacitypercapitahasdescendedinrecent20years.ThispaperalsodiscussesthespatialdistributionofChina’snaturalcapitalecologicalsustainability,efficiencysustainabilityandfairnesssustainability.Finally,itbuildsmulti-criteriaevaluation(MCE)modelstogetmultidimensionalsustainabilityframeworktakingecologicalsustainability,efficiencysustainability,andfairnesssustainabilityintoconsideration.
简介:Internationalcooperationtoaddressclimatechangenowstandsatacrossroads.WithanewinternationalregimeforemissionsreductionestablishedbytheDurbanPlatform,"NewClimateEconomics(NCE)"hasbecomearesearchhotspot.Theneedforurgentactiontocombatclimatechangehasprompteddiscussiononreformsofeconomicgrowthpatternsandtheenergysystem.Theindustrialcivilization,therefore,nowfacesatransitiontowardsanewpathwayforecologicalsustainability.NCEexploresneweconomicconcepts,theories,andanalyticalmethodstodesignabalancedpathwayforsustainablegrowthandemissionreduction.Insteadofgettingtrappedindiscussionsonallocationofemissionreductionresponsibilitiesandobligationsamongcountries,NCEpaysmoreattentiontodevelopingwin-winmultilateralcooperationmechanismsthatfacilitatecollaborativeR&Dandknowledgesharing.Inaddition,NCEstudiesincentivesforlow-carbontransition,turningcarbonemissionreductionintoadomesticneedforcountriestoincreasetheirinternationalcompetitiveness.Toachievethe2°Ctarget,mostcountriesaroundtheworldfacechallengesofinsufficientemissionallowancestocoverexpectedemissionsassociatedwiththeirprojectedeconomicgrowth.Ascarbonemissionsrightsbecomesanincreasinglyscarceresource,increasingthecarbonproductivityoftheeconomyturnstobethecriticalpathtoaddressthedilemmaofgreenorgrowth.NCEstudiesthehistoricalevolutionofcarbonproductivityforcountriesatdifferentdevelopmentstagesaswellaswaystoenhancesuchcarbonproductivity.Thistypeofstudyprovidesinvaluablelessonsforemergingeconomiestoreachtheirownemissionpeakswithoutlosingthemomentumofgrowth.Replacingfossilfuelswithnewandrenewableenergyhasproventobeaninevitablechoiceforreshapingtheenergysystemandaddressingclimatechange-ithasalreadybecomeaglobaltrend.NCEstudiesincentivesfornewenergytechnologyinnovationanddeploymentprovidedbycarbonpricing,andshedsligh
简介:Anewbioreactoronthebasisofadynamicfluidizedbedwasdesigned,whichcombinesadvantagesofthefluidizedbedandabiologicalcontactor.Theexperimentsofstart-up,nor-maloperationandparameteradjustmentarecarriedout.There-sultsshowthatthebioreactorcanbequicklystartedupintheconditionthatthefillis50%,thehydraulicretentiontimeis72min,aeratespeedis2.5m3/h,rotation-cagerotatedspeedis1.5r/min,andtheremovalratesofchemicaloxygendemand(CODCr)andAmmonianitrogen(NH3-N)are75.34%and80.98%respec-tively.Theinfluenceoftheoperationparameteronremovalratesofthebioreactorisanalyzed,andanappropriateoperationpa-rameterisprovided.
简介:InAugust2011,theSangzhiCountygovernment,HunanProvince,adoptedaseriesofnewhealthcarepoliciesasanationalpilotoftheNewCooperativeMedicalScheme(referredtoas2011NCMS).Thesepoliciesweredesignedtofurtherresolveillness-ledpovertyandthepoorstateofhealthcareinthelocalarea.TheprogramhadapositiveimpactandspreadtootherregionsinHunanProvince.Thispaperwilldiscusstheprogressmadeasaresultofthepoliciesandseveralissuesthatchallengetheschemeinpractice.Atotalsampleof1212individualsand303householdswereincludedintheanalysis,and98interviewswereconductedwithpeoplerelatedtothescheme.Ourmajorfindingsindicatethatthe201!NCMShassignificantlyreducedtheout-of-pocketmedicalpaymentofruralresidents,andalsoincreasedthetownshiphospitals’patientflow.However,themedicalschemestillfacesmanychallengingissuesduringtheimplementation.WiththeincreasinginterestamongtheChinesepolicymakersinstrengtheningandpromotingtheSangzhiModel,theimpactsoftheschemedeservegreaterattentioninpracticesoastofurtherimproveNCMSinruralChina.
简介:Basedontheconceptofecosystemcarryingcapacity,theindicatorsystemofquantitativeassessmentwassetup,whichconsistedofsupportindicatorsystemandpressureindicatorsystem.Andthefactoranalysismethodwasusedtoscreentheindicatorsystem.Differentfromthetraditionalindicatorweightdeterminationbasedontheabsolutevaluesofthecoefficientsofregressionequation,thesquaresoffactorloadingsintherotatedcomponentmatrixwereattemptedtodeterminetheweightsof40assessmentindicators.TheresultshowsthatecologicalsupportsystemandpressuresysteminBinhaiNewAreaarerelativelybalancedamongsixyears,andthedevelopinglevelofurbanecosystemisbasicallyhealthyonthewhole.However,duetocontinuouslyincreasingpressureoftheresourcesconsumptioncausedbytherapidgrowthofthesecondindustry,whichistheLeadingIndustryofBinhaiNewArea,theecosystemcarryingcapacityreachedtheminimumin2005.
简介:SinceChinasetthesustainabledevelopmentstrategy,positiveprogresshasbeenmadeinimplementingthestrategy,andactivecontributionshavebeenmadetothesustainabledevelopmentofmankind.Currently,profoundchangesaretakingplaceinChina'sinternalandexternalsituation.Anewerahasbegunintheimplementationofthesustainabledevelopmentstrategy.Weshouldtakefulladvantageofthisopportunityandmakeuseofallfavorableconditionsandchancestofurtherpromotetheimplementationofthesustainabledevelopmentstrategy.
简介:Long-lastingexpansionofhazepollutioninChinahasalreadypresentedasternchallengetoregionaljointpreventionandcontrol.Thereisanurgentneedtoenlargeandreconstructthecoverageofjointpreventionandcontrolofairpollutioninkeyarea.Airqualitymodelscanidentifyandquantifytheregionalcontributionofhazepollutionanditskeycomponentswiththehelpofnumericalsimulation,butitisdifficulttobeappliedtolargerspatialscaleduetothecomplexityofmodelparameters.Thetimeseriesanalysiscanrecognizetheexistenceofspatialinteractionofhazepollutionbetweencities,butithasnotyetbeenusedtofurtheridentifythespatialsourcesofhazepollutioninlargescale.Usingeconometricframeworkoftimeseriesanalysis,thispaperdevelopedanewapproachtoperformspatialsourceapportionment.WeappliedthisapproachtocalculatethecontributionfromspatialsourcesofhazepollutioninChina,usingthemonitoringdataofparticulatematter(PM2.5)across161Chinesecities.Thisapproachovercamethelimitationofnumericalsimulationthatthemodelcomplexityincreasesatexcesswiththeexpansionofsamplerange,andcouldeffectivelydealwithseverelarge-scalehazeepisodes.
简介:TheGreatEastJapanEarthquakeinMarch2011devastatedtheeasternregionofJapan.Duetotheresultingnuclearaccident,JapaneseCabinetdecidedtoreviseitsenergypolicies.TheEnergyandEnvironmentCouncilinNationalPolicyUnitpublishedoptionsonthenation’sscenariosforenergyandeconomyin2030.Weestimatedtheeconomicimpactsoftheoptionstonationaleconomyandhouseholdsin2030.Finally,weclarifiedsignificantfactorstoestablishasecure,affluentandlow-carbonsocietybasedontheenergyscenarios.
简介:Thepaperdemonstrateswhyitisnecessarytotaketherestorationofmarinecoastalecosystemhealthasanewgoalforintegratedcatchmentmanagement,incoastalareaoftheToloHarbour.Thepresentgoalofintegratedcatchmentmanagement(ICM)intheToloHarbouristomeetwithWaterQualityObjectives.TheperformanceofanICMplan,ToloHarbourActionPlan(THAP),isevaluatedbyusingmarinecoastalecosystemhealthindicatorsincludingstressindicatorsandresponsesindicators.SincetheimplementationofTHAPin1988,somesignificantreductioninpollutionloadinghasbeenobserved-reductionof83%ofBODloadand82%ofTNbetween1988and1999.TherehasbeenanimprovementinthehealthstateofToloHarbourmarinecoastalecosystemasevidencedinthetrendsofthephysical,chemicalandbiologicalindicators,althoughsomereversefluctuationsinsomeperiodsexist.However,thiscanonlybeconsideredasthefirstsignoftheecosystemhealthrestoration,sinceecosystemhealthco
简介:Itisthemajorpurposeofthepapertopresenttheurbanland-bankingplanninganditsfunctionsofpromotingtheurbanland-bankingsystemandlanduseadministration.Theurbanland-bankingsystemhasthepotentialattributeofactingasanirreplaceableroleinurbanlandadministration,butitsunexpectedfunction-deviationhasimpacteditsimplementationeffectinChina.Afewcitygovernmentsareattemptingtodealwiththeproblembytheurbanland-bankingplanningwhichisexpectedtocontributetotheextensionofurbanfunction,optimizationofurbanpatterns,promotionofurbancorecompetitivenessandoverallconstructionoftheurbanvaluechain.Inthispaper,weprimarilydiscussthenecessity,functions,purposesandmaincontentsoftheurbanland-bankingplanning.Subsequently,theimplementingsituationoftheurbanland-bankingsysteminNan-jingisanalyzed,includingitsintegratedmode,spatio-temporalquantitativedistributionandmaincharacteristics.Finally,thebackgroundandtargetsincludingtotal,compositions,space,andregulationpointsaregraduallyintroducedtopresenttheNanjingland-bankingplanningversion2.