简介：Indespiteoffluctuationinrecentyears,thegrainyieldinChinahasbeenincreasing,whichrelievestheconflictbetweensupplyanddemandandturnsthesituationoffoodsecuritygood.However,becauseoftherapidincreaseinfoodconsumption,theconflictsoffoodqualityandstructureinthesupplyanddemandequilibriumhasbecomemoreandmoreobviousandthelong-effectivemechanismoffoodsecurityhasnotbeenestab-lishedyet.ItisfoundthatthefactorsaffectingfoodsecurityinChinaincludethescarcityanddissipationofresources,farmers’lowenthusiasminplantinggraincropsandtheinappropriatenessoftheemphasisandmeasuresofmacro-economicregulationandcontrol.Therefore,theauthorsadvancetooptimizeresourcesallocation,strengthenmacro-economicregulationandcontrolandpolicystimulationandestablishthemechanismofallocatinggrainproductioncost,tosetupthelong-effectivemechanismofChinafoodsecurityandkeepitstableinthelongterm.

简介：Overthepastdecade,theChinesegovernmenthasdevelopedseveralplansregulationsandpolicymeasuresrelatedtothedevelopmentofrenewableenergytechnologiesandhasimplementedaseriesofpilotprojects.ChinesepolicymakershavespentseveralyearsstudyinghowrenewableenergypolicymodelsthathavebeenusedinternationallycouldbeimplementedinChina.Programsarecurrentlyunderwaytoimplementpilotrenewableportfoliostandards,ormandatorymarketshares(MMS)forrenewableenergy,inseveralprovinces.ThispaperexaminestheprimaryinstitutionsthatareinvolvedinpromotingrenewablepoliciesinChina,thestructureofthepoliciesthatcurrentlyarebeingdrafted,andthestatusofthecomplementary,national-levelrenewableenergylawbeingdraftedtoprovidealegalbasisforongoinglocalandnational-levelpolicies.ItthenexaminesthelegalrequirementsforpromotingrenewableenergylegislationundertheChineselaw-makingsystem.Finally,itprovidesrecommendationsfor

简介：Theuseofenergyconservationemissionreductionpoliciestopromoteindustrialrestructuringandupgradingandthusfacilitateenergyconservationandemissionreductionisoneofthe10importantstrategiesofenvironmentalmanagementinChina.TheuseofenergyconservationemissionreductionpoliciestopromoteindustrialrestructuringandupgradingandthusfacilitateenergyconservationandemissionreductionisoneoftheimportantstrategiesofenvironmentalmanagementinChina.Basedonthesystematiccollectionof1,195energyconservationemissionreductionpolicies,wediscusstheinfluenceofindividualmeasureandmeasuresynergyofenergyconservationandemissionreductionpoliciesrespectively.Theresultsshowthattheenergyconservationandemissionreductionpolicieshaveasignificanteffectontheoverallpromotionofindustrialupgrading.Thefinancialmeasuresandguidancemeasureshaveapositiveimpact;thefinancialmeasuresandguidancemeasureshavesignificantlypositiveeffect;however,theadministrativemeasures,fiscaltaxmeasures,andothereconomicmeasuresdotheopposite;thepositiveeffectofthesynergyofguidancemeasuresandfinancialmeasuresisgreaterthanthenegativeeffectofconsideringonlythesynergyoffiscaltaxmeasuresandothereconomicmeasures,andsignificantlygreaterthanthenegativeeffectofthesynergyofadministrativemeasures,fiscaltaxmeasures,andothereconomicmeasures.Weshouldstrengthenandemphasizetheuseofthemeasurethathaspositiveeffectonindustrialstructurerestructuringandupgradingindividuallyandsynergistically.

简介：GroundlevelozonepollutionhasbecomeasignificantairpollutionprobleminBeijing.Becauseofthecomplexwayinwhichozoneisformed,itisdifficultforpolicymakerstoidentifyoptimalcontroloptionsonacost-effectivebasis.Thispaperidenti-fiesandassessesarangeofoptionsforaddressingthisproblem.WeapplytheAmbientLeastCostModelandcomparetheeco-nomiccostsofcontroloptions,thenrecommendthemosteffectivesequencetorealizepollutioncontrolatthelowestcost.ThestudyfindsthatinstallingofStageIIgasolinevaporrecoverysystematBeijing's1446gasolinestationswouldbethemostcost-effectiveoption.Overall,optionstoreduceozonepollutionbycuttingve-hicularemissionsaremuchmorecost-effectivethanoptionsto'cleanup'coal-firedpowerplants.