简介:Diversityindicesandabundancedistributionmodelsarestatisticaltoolswhichecologistshaveappliedfordecadesforanalyzingtheintrinsicregularitiesofvariousecologicalentities,Inthiswork,wehaveappliedthesetechniquestousethenotionssuchaspedodiversity(asanexampleofgeodiversityinabroadsense),inordertodectectthedifferencesandsimilaritiesbetweenbothnaturalresources,biologicalandnon-biological,ThediscussionhasmainlybeenconductedthroughthestudyoflandformbasedpedodiversityanalysisappliedtoSOTERdigitaldatabasesinHanianIslan,China,ThemainanalyticalmethodsincludeindicesofrichnesSthatarethenumberofthecategories(SOTERunitsrelatingtodifferentsoilsinthiswork),indicesbasedonproportionalabundanceofcategoriesHandEwhicharenotonlythenumberbutalsotheirrelativeabundance(inourcase,therelativeareaoccupiedbyeachpedotaxa)istakenintoaccount,modelsofthedistributionofabundaceofcategoriesthatprovidethemostcompletedescriptionbutalsotheleastabridgedandGISmappingtoshowthespatialvariationdigitally.
简介:Distribution,interoperability,interactivity,componentarefourmainfeaturesofdistributedGIS.Basedontheprincipleofhypermap,hypermediaanddistributeddatabase,thepapercomesupwithakindofdistributedspatialdatamodelwhichisinaccordancewiththosefeaturesofdistributedGIS.Themodeltakescatalogserviceastheoutlineofspatialinformationglobalization,anddefinesdatastructureofhypermapnodeindifferentlevel.Basedonthemodel,itisfeasibletomanageandprocessdistributedspatialinformation,andintegratemulti_source,heterogeneousspatialdataintoaframework.Traditionally,toretrieveandaccessspatialdataviaInternetisonlybythemeormapname.Withtheconceptofthemodel,itispossibletoretrieve,load,andlinkspatialdatabyvector_basedgraphicsontheInternet.
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
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
简介:Withrapidscientificdevelopmentandfurtherexplorationtowardsthenature,thehumankindhopestoservethemselvesbymasteringthenaturallaw.CountriesallovertheworldsetmuchvalueonthestudyofAntarcticaandhaveobtainedplentyandsubstantialachievements.SoastostrengthenmutualunderstandingamongthecountriesinAntarcticsurveyingandmappingandsharetheachievements,the'InternationalGISWorkshoponAntarcticKingGeorgeIsland',Wuhan,July6th~7th,2000wassuccessfullyheldintheLectureHalloftheNationalLaboratoryforInformationEngineeringinSurveying,MappingandRemoteSensing(LIESMARS).ItwasjointlyheldbytheNationalResearchCenteronAntarcticSurveyingandMappingandLIESMARS,andsponsoredbytheNationalPolarRegionInspectionOffice,NationalNaturalScientificFoundationCommittee,theStateBureauofSurveyingandMapping,theformerWuhanTechnicalUniversityofSurveyingandMapping.
简介:InaccordancewiththeAgreementofSino-SpainScienceandTechnologyCooperation,theInstituteofSeismology,SSBofChinaandtheInstituteofAstronomyandGeodesyofSpainhavetogetherperformedresearchattheGeodynamicsLaboratoryofLanzarote(CanaryIslands)withgeodynamicinstrumentation.Researchersconductedobservationandthenanalyzedthedatacompiled.Researchersusingtheadvancedgeodynamicinstrumentscouldmonitorthevolcanicactivityandseismicityinordertoforecastthevolcaniceruptionandearthquakes.TheresultsofthispaperareobtainedfromthisscientificandtechnologicalcooperationofthetwoinstitutesbetweenChinaandSpain.
简介:TheCarboniferousvolcanicrocksinwesternHainanIslandconsistofaseriesofoceanictholeiteandrhyoporphyrite,showingbimodalnature.Similargeochemicalcharacters,intermsofabun-dacesandrelativerationsofincompatibleelementsandREEandtheREEpatterns,betweenthebasaltandcontinentalrift-associatedtholeiiteindicatetheoccurrenceofLatePaleozoicriftinginthearea.Thebasalticmagma,withalowdegreeofevolution,wasoriginatedfromdeepmantle,show-ingcontaminationbylowcrustalmaterial.Therhyoliteisthoughttobeformedfrompartialmeltingofthecontinentalcrustbyhigherthermalflowinariftenvironmentratherthanfromfractionalcrystallizationofabasalticmagma.
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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。
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.
简介:AnimprovedtopographicdatabaseforKingGeorgeIsland,oneofthemostfrequentlyvisitedregionsinAntarctica,ispresented.AfirststepconsistedincombiningdatafromdifferentialGPSsurveysgainedduringtheaustralsummers1997~1998and1999~2000,withthecurrentcoastlinefromaSPOTsatelliteimagemosaic,topographicinformationfromexistingmapsandfromtheAntarcticDigitalDatabase.Fromthisdatasets,adigitalterrainmodel(DTM)wasgeneratedusingArc/InfoGIS.Inasecondstep,asatelliteimagemapatthescale1∶100000wasassembledfromcontourlinesderivedfromtheDTMandthesatellitemosaic.Alackofaccuratetopographicinformationintheeasternpartoftheislandwasidentified.AdditionaltopographicsurveyingorSARinterferometryshouldbeusedtoimprovethedataqualityinthatarea.TheGISintegrateddatabasewillbeindispensableforglaciologicalandclimatologicalstudiesandadministrativeandscientificpurposes.Infuture,theapplicationofGIStechniqueswillbemandatoryforenvironmentalimpactstudiesandenvironmentalmonitoringaswellasformanagementplansonKingGeorgeIsland.
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.
简介:0IntroductionTheJapaneseIslandsconsistoffivevolcanicarcs(Fig.1).TheNorth-EastandSouthWestJapanarcstogetherformtheHonshuarc,towhichtheKurilearcjoinsatHokkaido,whereastheIzu-MarianaarcjoinsatIzu-FossaMagna,andtheRyukyuarcjoinsatKyushu.Theseregionswherevolcanicarcsconverge,aretermed'islandarcjunctions'.