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29 个结果
  • 简介:Diversityindicesandabundancedistributionmodelsarestatisticaltoolswhichecologistshaveappliedfordecadesforanalyzingtheintrinsicregularitiesofvariousecologicalentities,Inthiswork,wehaveappliedthesetechniquestousethenotionssuchaspedodiversity(asanexampleofgeodiversityinabroadsense),inordertodectectthedifferencesandsimilaritiesbetweenbothnaturalresources,biologicalandnon-biological,ThediscussionhasmainlybeenconductedthroughthestudyoflandformbasedpedodiversityanalysisappliedtoSOTERdigitaldatabasesinHanianIslan,China,ThemainanalyticalmethodsincludeindicesofrichnesSthatarethenumberofthecategories(SOTERunitsrelatingtodifferentsoilsinthiswork),indicesbasedonproportionalabundanceofcategoriesHandEwhicharenotonlythenumberbutalsotheirrelativeabundance(inourcase,therelativeareaoccupiedbyeachpedotaxa)istakenintoaccount,modelsofthedistributionofabundaceofcategoriesthatprovidethemostcompletedescriptionbutalsotheleastabridgedandGISmappingtoshowthespatialvariationdigitally.

  • 标签: 海南岛 GIS 地理信息系统 空间分布 多样性指标 土壤
  • 简介:Distribution,interoperability,interactivity,componentarefourmainfeaturesofdistributedGIS.Basedontheprincipleofhypermap,hypermediaanddistributeddatabase,thepapercomesupwithakindofdistributedspatialdatamodelwhichisinaccordancewiththosefeaturesofdistributedGIS.Themodeltakescatalogserviceastheoutlineofspatialinformationglobalization,anddefinesdatastructureofhypermapnodeindifferentlevel.Basedonthemodel,itisfeasibletomanageandprocessdistributedspatialinformation,andintegratemulti_source,heterogeneousspatialdataintoaframework.Traditionally,toretrieveandaccessspatialdataviaInternetisonlybythemeormapname.Withtheconceptofthemodel,itispossibletoretrieve,load,andlinkspatialdatabyvector_basedgraphicsontheInternet.

  • 标签: 乔治国王岛 分发 GIS hypermap 数据模型 互操作性
  • 简介:<正>StudiesontheaerolitefragmentsfromBaishacrater,HainanIslandprovethattheybelongtocalcium-richachondritewhicharerelictsofcrateringmeteoriteoftheBaishacrater.Theseflat-ballshapedaerolitefragments,sizebeing21cm×18.5cm×8.7cm,werefoundinacreekwithintheBaishacrater.Thishardaeroliteweigh3.75kgwithadensityof3.46g/cm3.Itismantledbya0.1-0.5cmthick,brownshellanditsfreshsectionisdark-grey.Theaeroliteischaracterizedbyporphyritictextureandnospherulitictexturehasbeenfound.Microscopicexamination,X-raydiffractionanalysisandelectronicprobeanalysis

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  • 简介:演讲为从在WGGGI的成员之中散布的问询表获得的乔治国王岛在存在测地学的数据上包含信息。

  • 标签: 问询表 GIS 回答
  • 简介:北京区域的陆地地面温度(LST)从利用一个辐射传递方程和城市的热岛(HUI)效果的陆地卫星TMthermal乐队数据被检索有土地覆盖和规范的差别植被指数(NDVI)的北京和它的关系被讨论。LST的结果证明城市的LST比郊外的显然高。平均城市的LST被发现到4。5℃和比郊外、外部的郊外的温度高的9℃,分别地它在北京表明了突出的UHI效果。在LST和NDVI之间的Prominentnegative关联在城市的区域被发现,它建议在城市的区域的低百分比植被盖子是城市的热岛的主要原因。

  • 标签: 土壤表面温度 城市热岛效应 陆地卫星 温度变化
  • 简介:Avolcano-platformcarbonatesequence,fromCarboniferoustoPermian,iswidelytrappedinthedeepwaterdepositsinChangning—Menglianbelt.Threecomponentscanberoughlyrecognizedinas-cendingorderas:thelava,thevolcaniclasticandcarbonaterocks.Inmostcases,thesequenceisincompleteduetofaultingresultedfromthestrongorogeniccompression.Butthestratigraphicsuccessioniscontinu-ousexceptforthetwointerruptionsofpaleokarsts,whichextendedfrommiddleLateCarboniferoustoLatePermianandfromlateEarlyPermiantoLatePermianrespectively.Apreliminarystudyindicatesthatthestratigraphy,petrology,sedimentation,volcanismgeochemistryandfossilsinthesequencearequitesimilartothatinmodemandancientoceanicislandsandtheremaybetherelicsofancientoceanicislandsinthepaleo-Tethys.Thedifferencesamongthesesequencesprobablysuggestacomplexconfigu-rationoftheislandsorislandchainTheseislandswereformedunderintra-oceanicenvironmentsofthepaleo-Teth

  • 标签: ANCIENT OCEANIC ISLAND paleo - TETHYS
  • 简介:Withrapidscientificdevelopmentandfurtherexplorationtowardsthenature,thehumankindhopestoservethemselvesbymasteringthenaturallaw.CountriesallovertheworldsetmuchvalueonthestudyofAntarcticaandhaveobtainedplentyandsubstantialachievements.SoastostrengthenmutualunderstandingamongthecountriesinAntarcticsurveyingandmappingandsharetheachievements,the'InternationalGISWorkshoponAntarcticKingGeorgeIsland',Wuhan,July6th~7th,2000wassuccessfullyheldintheLectureHalloftheNationalLaboratoryforInformationEngineeringinSurveying,MappingandRemoteSensing(LIESMARS).ItwasjointlyheldbytheNationalResearchCenteronAntarcticSurveyingandMappingandLIESMARS,andsponsoredbytheNationalPolarRegionInspectionOffice,NationalNaturalScientificFoundationCommittee,theStateBureauofSurveyingandMapping,theformerWuhanTechnicalUniversityofSurveyingandMapping.

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  • 简介:InaccordancewiththeAgreementofSino-SpainScienceandTechnologyCooperation,theInstituteofSeismology,SSBofChinaandtheInstituteofAstronomyandGeodesyofSpainhavetogetherperformedresearchattheGeodynamicsLaboratoryofLanzarote(CanaryIslands)withgeodynamicinstrumentation.Researchersconductedobservationandthenanalyzedthedatacompiled.Researchersusingtheadvancedgeodynamicinstrumentscouldmonitorthevolcanicactivityandseismicityinordertoforecastthevolcaniceruptionandearthquakes.TheresultsofthispaperareobtainedfromthisscientificandtechnologicalcooperationofthetwoinstitutesbetweenChinaandSpain.

  • 标签: VOLCANO OBSERVATIONAL instrument cooperation.
  • 简介:TheCarboniferousvolcanicrocksinwesternHainanIslandconsistofaseriesofoceanictholeiteandrhyoporphyrite,showingbimodalnature.Similargeochemicalcharacters,intermsofabun-dacesandrelativerationsofincompatibleelementsandREEandtheREEpatterns,betweenthebasaltandcontinentalrift-associatedtholeiiteindicatetheoccurrenceofLatePaleozoicriftinginthearea.Thebasalticmagma,withalowdegreeofevolution,wasoriginatedfromdeepmantle,show-ingcontaminationbylowcrustalmaterial.Therhyoliteisthoughttobeformedfrompartialmeltingofthecontinentalcrustbyhigherthermalflowinariftenvironmentratherthanfromfractionalcrystallizationofabasalticmagma.

  • 标签: 火山岩 地质构造 海南岛 石炭纪 地球化学特征
  • 简介:为质的陆地评估的一个基于酒鬼的自动过程被开发。这个过程在自动化陆地评估系统(淡色啤酒)被创造。目的是设计允许的一个过程快分离从为打算的陆地使用的非合适的SOTER单位潜在地合适,显示限制到陆地使用的不同类型。土地的不同类型不相等地被适合到各种各样的使用,陆地评估是对为陆地使用的一种指定类型的土地的一条道的适用性的评价。在实践,这含有比较(匹配)在指定陆地使用的要求和陆地的性质之间。陆地评估概念和定义在纸被对待。淡色啤酒是允许陆地计算程序造他们他们能为陆地评估根据粮农组织框架与计算地图单位的物理、节俭的适用性的自己的知识库的系统的一个计算机程序。有所谓的决定树的淡色啤酒程序工作,是叶子是结果的层次multiway在钥匙(例如,陆地质量的严厉层次),并且树的内部节点是决定标准(例如,陆地特征价值)。这些树被程序穿越为每个地图单位用实际陆地数据计算评估。SOTAL是为目前,三种陆地利用类型(LUT)在被区分的物理陆地评估在淡色啤酒开发的一个基于酒鬼的质的模型,即,在不同输入和工艺的条件下面的栽培香蕉,咖啡和橡胶。这些LUT被11个landuse要求描绘并且由与相应陆地质量匹配陆地使用要求评估了。纸在为陆地质量评价在SOTAL使用的标准上详细描述并且一个最后的适用性等级怎么根据评估陆地质量被完成。结果响应特定的信息和决定和政策制造者的数据需要作为产品通过产生G1S的地图被设想。

  • 标签: evaluation TROPICAL CROPS HaiSOTER HAINAN ISLAND
  • 简介:ThepresentpapersummarizesajointeffortundertakenbytheInstitutoGeográficoMilitardeChile(IGM)andtheInstitutoAntárticoChileno(INACH)inordertoobtaindigitalcartographyoftheFildesPeninsula,ReyJorgeIsland,Antarctica.ThispeninsulaconstitutestheprototypeprojectareaforthemainIGM_INACHprojectN°153“CartographicSurveyandGeographicInformationSystemoftheSouthShetlandsIslands'TheDigitalCartographywasimplementedatthe1∶5000scale,usinggeodeticGPScontrolpointsreferencedtoITRF92andWGS84Data.TheUTMProjectionwasused.AllproductswereproducedincompliancewiththecartographicstandardsoftheIGM.ThiscartographywasdesignedinordertosatisfytherequirementsofaGeographicInformationSystemdevelopedbyINACH.Thisgeo_referenceddatabaseincorporatesavarietyofthematicinformation,enablingittosupportscientificinvestigations,environmentalandmulti_disciplinarystudies,andotherapplications.AsaresultofthisprojecttheInstitutoGeográficoMilitardeChileproducedamapat1∶5000scaleindigitalformat,andalsoa1∶10000topographicmap,inpaperformat,withtwoeditions:firsteditionoftwochartsandasecondeditionwithonechartcoveringthewholeprojectarea.Chileandothercountrieshaveanumberofimportantpermanentactivitiesinthisarea.Thesemapsaredesignedtosupportseveralanddiversegeo_spatialstudiesrelatedtotheseactivities.

  • 标签: 数字制图学 GPS 地图的过程
  • 简介:AnimprovedtopographicdatabaseforKingGeorgeIsland,oneofthemostfrequentlyvisitedregionsinAntarctica,ispresented.AfirststepconsistedincombiningdatafromdifferentialGPSsurveysgainedduringtheaustralsummers1997~1998and1999~2000,withthecurrentcoastlinefromaSPOTsatelliteimagemosaic,topographicinformationfromexistingmapsandfromtheAntarcticDigitalDatabase.Fromthisdatasets,adigitalterrainmodel(DTM)wasgeneratedusingArc/InfoGIS.Inasecondstep,asatelliteimagemapatthescale1∶100000wasassembledfromcontourlinesderivedfromtheDTMandthesatellitemosaic.Alackofaccuratetopographicinformationintheeasternpartoftheislandwasidentified.AdditionaltopographicsurveyingorSARinterferometryshouldbeusedtoimprovethedataqualityinthatarea.TheGISintegrateddatabasewillbeindispensableforglaciologicalandclimatologicalstudiesandadministrativeandscientificpurposes.Infuture,theapplicationofGIStechniqueswillbemandatoryforenvironmentalimpactstudiesandenvironmentalmonitoringaswellasformanagementplansonKingGeorgeIsland.

  • 标签: 乔治国王岛 南极半岛 GIS 数字地面模型 卫星图象地图 冰河撤退
  • 简介:ABSTRACT AGISisproposedasatoolforthemanagingplanfortheAntarcticspeciallymanagedarea(ASMA)inAdmiraltyBay.TheASMAcomprisestheareaconsideredtobewithintheglacialdrainagebasinofthebay.Furthermore,itincludespartofSSSINo.8adjacenttotheareabutoutsideoftheglacialdrainagebasin.Threestationsandsixrefugesarelocatedinthearea.UsingaSPOTsatelliteimagemap,thelimitsoftheASMAaremarkedanditsareaisre_calculated.Itconsistsof362km2,including186km2islandicefieldandsmallcirqueglaciersand32km2ice_freefield.Therestcompriseswaterofthebayandasmalladjacentarea(8km2)oftheBransfieldStrait.TheASMA_GISwillconsistsof12datalayersrangingfromthephysiographicsettingstothebiologicalandadministrativefeatures.AlldatawillbeimplementedintoArc/InfoGISaccordingtothecartographicguidelinesoftheSCARWG_GGI.First,fiveplansofinformationwillberealisedusingatopographicdatabasecompiledfromvarioussourcesanddatafromtherevisedbathymetricchartpublishedbytheBrazilianNavyHydrographicSurveyandalsoincluding:1)LimitsoftheASMAandprotectedareas;2)Glaciologicalfeatures(e.g.drainagebasinlimits)and3)Humanpresence(e.g.stationsandhistoricalsites).ThesebasicGISlayerswillbeoperationalinearly2001.Then,additionaldataontheremaininglayers(e.g.hydrology,geologyandgeomorphology)willbeincludedfrompublishedsources.TheASMA_GISwillformanimportantdatabaseforenvironmentalmonitoringandstudiessurveyingtemporalchangesoffeaturessuchasglacierfrontpositionsorbirdbreadingsites.

  • 标签: 海事法海湾 设法的计划 环境监视 ASMA
  • 简介:0IntroductionTheJapaneseIslandsconsistoffivevolcanicarcs(Fig.1).TheNorth-EastandSouthWestJapanarcstogetherformtheHonshuarc,towhichtheKurilearcjoinsatHokkaido,whereastheIzu-MarianaarcjoinsatIzu-FossaMagna,andtheRyukyuarcjoinsatKyushu.Theseregionswherevolcanicarcsconverge,aretermed'islandarcjunctions'.

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