简介:Regionaldevelopmentisacourseofaccumulationbasedonmanyfactors,whichisdirectlyrelatedtoresourcesutilizationandconversion.Andmaterialwealthproductionandaccumulationembodytheoutcomeofregionaldevelopment.Thus,focusingonmaterialwealth,regionaldevelopmentcanbeevaluatedfromresourcesandperspectiveofresourcesconversion.Takingtheinfrastructurallevel,transportationaccessibilityandeconomicdevelopmentlevelintofullaccount,theconceptof'material-baseddevelopment'waspresentedandthematerial-baseddevelopmentindex(MDI)modelwasestablished.ByusingtheMDImodel,geographicinformationsystemtechnologyandmathematicmethods,thisarticlethencalculatedMDIofeachcountyandprovinceofChinain2005andsystematicallyevaluatedthematerial-baseddevelopmentofChinaatcountyandprovincialscales,soastobringsomescientificreferencesandpolicy-makingsupportstothepopulationdevelopmentfunctionorientedzoningandpopulationspatialdistributionplanningofChina.Theresultshowedthat:(1)Atcountyscale,thematerial-baseddevelopmentofcountieswithinChinain2005wassignificantlydifferent,inwhichtherewere1876countiesbelongingtothemid-levelmaterial-baseddevelopmentandaccountedfor78.10%ofthetotal.Thenumbersofhigh-levelandlow-levelcountieswere144and382andaccountedfor6.00%and15.90%respectively,demonstratingaspindleshapeingeneral.Thespatialdistributionofmaterial-baseddevelopmentwasunbalanced,anditwasmuchbetterinsoutheasternpartofthelineof'Daxinganling–Yinshan-Liupanshan–southeastedgeofQinghai–TibetPlateau'thanthatofnorthwestern.Furthermore,therewerealsodifferencesofthesub-indexbetweendifferentmaterial-baseddevelopmentlevels.Therefore,fordifferentregions,keyissuesandmeasuresadaptabletolocalconditionshouldbeprioritizedandtakeninordertorealizeregionalbalancedevelopment.(2)Atprovincialscale,therewasalsosignificantdifferen
简介:摘要:就目前来说,我国的经济发展,依靠的能源以电力和石油为主,而人们在衣食住行中所选择的能源依旧以石油为主,我们常见的天然气依旧属于一种石油能源。电力是我国社会发展过程中一个十分重要的资源,但电力在生产传输过程中依旧具有一定的风险性。相较于以往的信息管理技术来说,在GIS的支持下,设备运行数据能够更为完善,更加全面,大多数数据在接收时都能够从GIS设备故障的真实案例中获取,并且对真实案例进行进一步的研究处理能够帮助工作人员更好地获得相应的数据,将其导入到数据分析系统中,工作人员则能够更好地对GIS设备故障数据进行分析、协调和管理,从而有针对性地制定GIS设备故障对策。
简介:通过对城区危险品运输管理现状的分析,针对城区危险品道路运输监管过程中存在的沟通信息不畅、权责不明等实际情况,融合城区公共安全联动机制的系统设计理念,基于GIS技术开发了由路径分析选择、应急救援管理、危险货物管理、危险源管理、车辆管理、信息显示及查询、地理信息和系统总控等模块构成的城区道路危险品运输可视化管控系统。首先,基于需求分析及开发目的,给出了系统总体结构框架,阐述了各模块的实施过程及效果;然后,建立了由空间数据与属性数据构成的GIS数据库,并将运输风险最小、费用最低作为路径优化的选线标准;最后,基于角改进的Dijsktra算法,实现系统路径的分析与选择。