学科分类
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30 个结果
  • 简介:Thispaperprobesintotherelationshipamongindividualbenefits,benefitsofthecountry,commonbenefitsofallhumansinlanduseandlandresourcesecurity.Thefollowingbalancedlandusemodelisproposed:theharmo-niousandinteractiverelationshipbetweenmanandnature,twomainbodiesoflandecologicalsystem,constitutesthemechanismoflandresourcessecurity.Thefeedbackrelationshipbetweenmanandnatureisthebasisforthelandresourcessecurityandthecoreistherelationshipamongpeopleestablishedforthebenefitequilibriuminlanduse.Theconflictsinlandusestemfromtherarityoflandresourceandthesolutiontothoseconflictsinharmonyhelpslandresourcesecurity.

  • 标签: 人与自然 土地利用 土地资源 土地资源安全
  • 简介:TheissueofgrainsecurityinChinaisattractingglobalattention.Inthisresearch,weanalyzetherelationshipbetweengrainproductionandcroplandresources.Theresultsindicatethatdecouplingofthesetwovariablesisrealizedatthenationallevel,andfertilizerandirrigationplayincreasinglyimportantrolesingrainproduction.Ofthe18principalgrainproducingprovinces,sevenshowedabsolutedecoupling,threeshowedrelativedecoupling,fiveshowedquasi-relativedecoupling,andthreeprovincesshowedcoupling.Also,therelativeimportanceoffertilizerandirrigationingrainproductionisdifferentamongthefourdifferentmodesofcoupling/decoupling.

  • 标签: DECOUPLING GRAIN production GRAIN CROPLAND resourc
  • 简介:TangShuangning,ViceChairmanofChinaBankingRegulatoryCommissioninspeechinSino-JapanEconomyForumofHighLevelrevealedthatuntilMaythisyear,61foreignfinancialinstitutionsandenterprisesfrom19countriesandregionshasestablished199operationalfinancialinstitutionsin21citiesinChinaincludingthreeforeignautomobilefinancialcompanies.

  • 标签: 中国 汽车金融 外资公司 市场 外资银行
  • 简介:Basedontheanalysisofthebioenergycropproductionfunctionoflanduse,combinedwiththestatusquoofChineselanduse,thecultivationofenergyplantsandthebioenergycropproductionfunctionoflandusehadbeenanalyzesanddiscussesinthispaper.Resultsshowthattherewerealotofunusedlandsandmarginallandswhichcanbeplantedbioenergycropstoperformthebioenergycropproductionfunctionoflandusewithgreatpotentials;andcurrentlytherewerenofoodproductionproblems.Therefore,itwasveryimportantforChinatoemphasizebioenergycropsplantinginordertofullyuselandresourcesinourcountry,moderatetheenergycrisisandincreasepeasants'income.

  • 标签: 土地使用 生物能源 作物生产 中国 植物种植 能源作物
  • 简介:HubeiProvinceisoneofthecriticalgrainproductionregionsinChinawiththequantitativecultivatedlandandgoodnaturalcondition;itplaysanimportantroleingrainsecurityinChina.However,owingtorapideconomicgrowth,populationpressures,anthropogenicactivities,andnaturaldisasters,thequalityofthecultivatedlandhassignificantlydecreasedinrecentyearsandenvironmentalresourcesareunderincreasingstress.Inordertoresearchonthemechanismofthechangeofthecultivatedland,thispaperanalyzesqualitativelytheinfluencingfactorsofthecultivatedlandchangeinHubeiProvincefrom1978to2004,anddistinguishesthedirectfactorsfromindirectinfluentonesbymeansoftheapproachofthepathanalysis.Theresultshowsthattheareaoftherentlandinthetotalnon-agriculturalland,thetotalpopulationgrowthandthefixedassetinvestmentarethemainfactorsdecidingthechangeofthecultivatedland.Meanwhile,thedensityofthetransportationnetwork,theproportionofpercapitaincomeofruralcitizenstothatofurbancitizens,non-agriculturalgrossdomesticproduction’sshareofthetotalGDPhasalessdirecteffectbutamoreindirectinfluenceonthedecreaseofthecultivatedlandinHubeiProvince.Theresultmeansthatwhilesomefactorshavelessdirectinfluenceonthechangeofthecultivatedland,itsindirectinfluencearesignificant,viceversa.Thusit’snecessarytoadoptacomprehensivemeasurementtoprotectthecultivatedland.

  • 标签: 耕地变革 关联式分析 路径分析 湖北省
  • 简介:Duringtherapidurbanizationperiod,thecontradictionbetweendemandfortheconstructionlandandthepreservationofcultivatedlandforfoodsecurityisgettingmoreandmoreseriousinChina.Withtheurbanizationtheruralsettlementlandisincreasinginsteadofdecreasing.Thispaperaimsatfindingthedrivingforcesforruralsettlementlandexpansion.Basedonlandusechangesurveydata(1996-2006)bytheMinistryofLandandResourcesP.R.C.,thispaperfindsthatpercapitaareaforruralsettlementlandismorethanpercapitaareaforcity,townshipandindustriallandineachprovinceexceptTibet.Besides,ruralsettlementlandareaandpercapitaruralsettlementlandareaareincreasingwhiletheruralpopulationisdecreasinginmostprovinces.Themainproblemsofruralsettlementlandusearelowefficiency,highvacancyrate,chaoticlayoutandillegaloccupancy.Thenthedrivingforcesforruralsettlementlandexpansion,includingeconomicdevelopment,familyincome,familyscale,psychologicalfactors,urbanization,transportation,lackofplanning,limitedcirculationofdwelling-houselandandimperfectsocialsecurity,areexploredbasedonaboveanalysis.Finally,policyrecommendations,inviewofdifferentinfluencingfactors,areputforwardtocontrolthedisorderexpansionofruralsettlementland.

  • 标签: 农村居民点 建设用地 驱动力 中国 用地面积 土地利用
  • 简介:Accordingtothecharacteristicsoftheprimarymaterialsofthebasiclandpriceinthelittletown,theauthorusestheanalysisfunctionofthefiguresandthespacetosetofftherankunit,calculatethenumberoftheunitandranktheland.Themethodandthesystemoftheevaluationofthebasiclandpriceinthelittletown(especiallythelittletownsintheWesternChina)willbeperfect.

  • 标签: GIS技术 地理信息系统 小城镇 基准地价 土地价格评估
  • 简介:Moderncitiesandtownsplayasthecentralplacesofwealthaccumulationforhuman-being,notonlyinthewaysofsettlementandmaterialconsumptionastheyweretraditionallyinancienttime,butalsointhewaysofsocialproductionandenvironmentalpollutionastheyaremostlytoday.Withsuchatransition,themeaningoflanduseforurbanizationhasbroadened.Accordingtotheruleofhumanecosystem,landuseformodernurbanizationcanbedividedintothreetypes:namely,thedirect,theindirectandtheinduced.However,itsstructurefollowsitsownwayofthedirect

  • 标签: 中国 城市化 土地利用 社会生产
  • 简介:NowadaysthefasteconomicdevelopmenthasbroughtaboutseriousconflictsbetweenthelimitedlandresourcesandtheincreasinglanddemandinChuzhouCity.Thechangesoflandusestructurealsorestricteconomicdevelopmentandsocietyprogressinthisarea.Becausedifferentcitieshavedifferentfunctionallocalization,thecityareaandeachcounty(city)haveformedcharacteristiclandutilizationstructure.Itisofgreatsignificancetomakerationaluseoflandresourcesandensurethesustainableuseoflandresourcesbyanalyzingthevariationoflandusestructureinthecityareaandeachcounty(city)inChuzhouCity.BasedonthedataoflandusemodificationofChuzhouCityfrom1996to2005andadoptingthequantitativeanalysisoflandscapeecology,thispaperstudiesquantitativelythetemporaldivisionofregionallandusestructureanditsdynamicchanges.Theresultsindicatethat:(1)thismethodcanrevealthelawofthevariation;(2)thevariationoflandusestructureinChuzhouCity:increasingdiversification,evennessandheterogeneity;(3)theintensityofchangeinlandusefrom1996to2005inthecityappearedinthesequence:grassland>trafficland>gardenland>virginland>forestland>industrialandresidentialland>cultivatedland>otheragriculturalland>waterfacilityland;(4)therewereremarkabledifferencesbetweenthecityareaandeachcounty(city)intherelativechangeandthelandusestructurechangefrom1996to2005.ThispaperanalyzesthevariationoflandusestructureinChuzhouCity,andfinallyproposesrelatedcountermeasuresandsuggestions.

  • 标签: 中国 土地资源 城市化 房地产开发
  • 简介:Ecologicalconservationarea,asthemainwatersourceandecologicalbarrierofacity,providesecosystemserviceforurbansustainabledevelopment.Landusesimulationandforecastcouldbebeneficialtoimprovefuturelanduseefficiencyandenvironmentalprotection.Inthispaper,wetooktheMiyundistrictasthestudyareaandappliedtheCLUE-Smodelforlandusesimulation,basedonlandusedatain2001and2010.Eightkeydrivingfactorswereselected,includingelevation,slope,distance,populationdensityandothers.Basedontheadjustedmodelparameters,thelandusepatternsof2020inMiyundistrictweresimulatedrespectivelyforrapidgrowthscenario,landuseplanningscenarioandecologicalprotectionscenarioandthenidentifytheareaneededextraordinarysupervisioninlandplanningimplementation.Theresultsshowedthatthesimulationaccuracyfor2010reached85%considerably,implyingthattheCLUE-SmodeliswellfittedformodelingthelandusepatterninMiyundistrict.Constructionlandincreasesandcultivatedlanddecreasesdramaticallyby2020inrapidgrowthandlanduseplanningscenarios.ThepotentiallandusechangetendstooccurnearMiyunreservoir,whilethesensitiveareaforecologicalprotectionandlandplanningimplementationaredistributedaroundurbanarea,FengjiayuandJugezhuangtown.Someopencastmineareas,whichwouldbeconvertedtoforestlandinplanning,willbehardtoexecuteintheactualsituation,sotheseareasshouldbepaidmoreattentioninlandmanagement.TheconclusionsmadeinthisstudywillprovidedatareferenceandbasicinformationforthefutureecologicalprotectionandlanduseplanningimplementationinMiyundistrict,whichcouldalsobeusefulforothersimilarcities.

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  • 简介:Landresourceisthematerialfoundationofhumansurvivalandeconomicdevelopment,andthecultivatedlandistheessenceoflandresources.Thispapertakesthecountyscale,byusingthemethodofGISspatialanalysisandstatisticalanalysisunifies,toexplorethequalityofcultivatedlandinBinchuanCountyusinglevel,andexplaintheutilizationlevelofcountycultivatedlandqualityspatialdifferentiationcharacteristics.Theresultsshowedthat:(1)inthequantityofcultivatedlandqualityandutilizationlevel,theaverageutilizationofpaddylandwasgreaterthanthatofdryland,andthecomprehensiveutilizationofcultivatedlandandsoon.Amongthem,thepaddylandrangedfromgrade6to15,theaverageutilizationwasgrade11.6;drylandrangedfromgrade2to11,theaverageutilizationwasgrade5.9;comprehensiverangeofcultivatedlandisgrade2to15,theaverageutilizationwasgrade8.1;(2)thequalityofcultivatedlandutilizationspatialdifferentiation.Paddyfield,drylandandcultivatedlandandlargevaluedistributioninthecentralandsouthern,invertedVshapedistribution;thesmallerthevaluedistributionintheEastandWest,adumbbellshapeddistribution.Amongthem,theydon’tusealargervalueofpaddylanddistributedinthecentral,Southandsouthwest,themaximumvalueis14.3,thesmallerthevaluedistributionintheWestandEast,theminimumvalueisgrade7;thelargerthevaluedistributionbythedrylandintheSouthandWest,themaximumvalueisgrade10.2,thesmallerthevaluedistributionintheWestandEast.Theminimumvalueisgrade2.3;thecomprehensiveutilizationofcultivatedlanddon’tdistributedlargervalueinthecentral,Southandsouth-west,themaximumvalueisgrade12.7,thesmallerthevaluedistributionintheWestandEast,theminimumvalueisgrade3.5.Thispapercanprovidescientificbasisforthedynamicmonitoringofcultivatedlandquality,thetransformationoflowyieldfarmlandandtheearlywarningofcul

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