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简介：TheissueofgrainsecurityinChinaisattractingglobalattention.Inthisresearch,weanalyzetherelationshipbetweengrainproductionandcroplandresources.Theresultsindicatethatdecouplingofthesetwovariablesisrealizedatthenationallevel,andfertilizerandirrigationplayincreasinglyimportantrolesingrainproduction.Ofthe18principalgrainproducingprovinces,sevenshowedabsolutedecoupling,threeshowedrelativedecoupling,fiveshowedquasi-relativedecoupling,andthreeprovincesshowedcoupling.Also,therelativeimportanceoffertilizerandirrigationingrainproductionisdifferentamongthefourdifferentmodesofcoupling/decoupling.

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.

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简介：Managementoftheunderstorylandisaneconomicformtodevelopcultivationandbreedinginmakinguseoftheforestecologicalenvironment.Itisalsoanimportantmeanstoincreasetheincomeofforestfarmersintheforestryregionsafterthereformofforestryrealrights.Thispaperinvestigatedthemanagementstatusofunderstoryland,andanalyzedtheimpactsanddestructionofitsimpropermanagementupontheforestecologyenvironment.Themanagementrightoftheunderstorylandisarestrictedrightofproperty,becausethemanagementisrelatedtotheecologyprotectionofforestandwoodland.Inadditiontoprivatepropertyrights,itshouldalsocomplywiththearrangementofnationalforestmanagement.Therefore,whileencouraginganddevelopingtheunderstorylandmanagement,it’simportanttoestablishalegalsystemforexecutingthemanagementrights,andthemanagementoftheunderstorylandshouldbeincludedinthescopeoftheforestrymanagement.

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简介：Landresourcesarefacingcrisesofbeingmisused,especiallyforanintersectionareabetweentownandcountry,andlandcontrolhastobeenforced.Thispaperpresentsadevelopmentofdataminingmethodforlandcontrol.Avector-matchmethodfortheprerequisiteofdataminingi.e.,datacleaningisproposed,whichdealswithbothcharacterandnumericdataviavectorizingcharacter-stringandmatchingnumber.Aminimaldecisionalgorithmofroughsetisusedtodiscovertheknowledgehiddeninthedatawarehouse.Inordertomonitorlandusedynamicallyandaccurately,itissuggestedtosetupareal-timelandcontrolsystembasedonGPS,digitalphotogrammetryandonlinedatamining.Finally,themeansisappliedintheintersectionareabetweentownandcountryofWuhancity,andasetofknowledgeaboutlandcontrolisdiscovered.

简介：作为在城市的陆地价格系统的一个重要角色，基本陆地价格估价在房地产市场指导并且思考各种陆地价格。用有到valuate的算法和强大的分析功能的地理信息系统(GIS)，土地将改进陆地估价的合理性和便利。用最佳的路径算法的基本陆地价格上的学习的目的是减少人造错误，提高automatization，避免由障碍目标做不方便。

简介：ThispaperdiscussestheurbanlandgradingsystembasedontheselfdevelopedGISsoftware.Thesystemestablishesthesystemtemplate,therelevantdatastructureandtheempiricalformulasoftheaffectingfactorandeconomicdataoflanduse.Besides,thesystemcancalculatetheserviceradius,sumandlandgradeautomatically.Furthermore,itcandostatisticsandqueryonvariouslandinformationandshowtheresultoflandgradingwithspatialandattributedata.ThispaperillustratestheresultbygivinganexampleofthecommerciallandgradingoftheurbanareaofWuhanCitybytheurbanlandgradingsystem.

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简介：本文旨在剖析影响土地荒漠化发生发展的更深层次的内在的社会经济因素，以及中国治理荒漠化的速度及规模．作者从１１个方面分析了这一问题，其中人口问题、传统习惯、实际问题和认识问题是引起土地荒漠化的根本原因；利益驱动行为、政策、宣传失误、法律、法规不健全和组织领导等主观原因，虽然是很重要的，但如严肃对待较易解决．经济水平、科学技术及资金投入虽然也重要，但在目前防治荒漠化过程中并不是根本的限制因子，在短时期内难以彻底解决，而必须在实践中逐步加以解决．

简介：TheGeologicalSurveyofNorway,incooperationwiththeGeologicalSurveysof22othercountriesandundertheaegisoftheCommissionfortheGeologicalMapoftheWorld(CGMW),hascompiledageologicalmapofnorthernEuropeatthe1:4millionscale.Forthefirsttimethegeologyofbothlandandseaareasofthislargeregionisdisplayedinasingledocument.Theareacoveredextends

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简介：Rural-urbanlandconversionisauniversalphenomenonintherapidprocessofeconomicdevelopmentandurbangrowth.Thewelfareoffarmerswholosttheirfarmlandattractedawidespreadconcernwithinthesocietyandacademia.However,furtherresearchaboutdifferentiatedpoliciesaccordingtothecharacteristicsofdifferentfarmergroupsisstillneedtobeconducted.Thisarticledividestheland-lostfarmersintothreeagegroups:youngerthan45,45-65,andmorethan65.Itproposesawelfareindexsystemincludingeightfunctionalareasbasedondifferentagegroupsofaffectedfarmers,takingfourdistrictsofWuhanCityascasestudyarea.Fuzzymathematicsmethodisusedtoderivetheaggregatedwelfareeffectindex.Ouranalysisshowthattheoverallwelfarelevelsofland-lostfarmersofallagegroupsdeclined,butwithavaryingdegree,withthelevelofwelfareinthosefarmerswhoare45-65yearsold,youngerthan45yearsold,andolderthan65yearsolddecreasedby18.7%,16.6%,and12.7%,respectively.Thedirectionanddegreeofeffectsonthefunctionalactivityindexvariesamongdifferentgroups.Economicconditions,livingenvironment,health,andsocialparticipationofallagegroupsdecreasewhilesocialsecurityandhousingconditionsincrease.Ontheotherhand,developmentopportunities,socialcommunication,andleisurehavedifferentchangingdirectionsindifferentagestages.Theseresultscallfordifferentiatedandtailor-madecompensationpoliciesforland-lostfarmers,towardsimprovingthewelfarelevelsofallfarmersandreducethedisparityamongthem.

简介：Thepaperdealswiththegeologicalsetting,historyandsubsidenceoftheVenetianPlain.MajorattentionispaidtothePleistocene-HolocenestratigraphicsequenceintheLagoonofVenice,inrelationtoitsoriginthatdatesbackto6-7kyrBP.Geologicallandsubsidence,whichplayedanimportantroleintheoriginandtheevolutionofthelagoon,andanthropogenicsubsidence,thathasrecentlyassumedamajorimportancefortheVenetianenvironment,arediscussed.Consideringalsothesealevelrise,23cmlossinlandelevationhasoccurredinthelastcentury,leadingtoincreasedfloodingeventsandenvironmentalproblemsthatrequireprotectiveworks.