简介:Diversityindicesandabundancedistributionmodelsarestatisticaltoolswhichecologistshaveappliedfordecadesforanalyzingtheintrinsicregularitiesofvariousecologicalentities,Inthiswork,wehaveappliedthesetechniquestousethenotionssuchaspedodiversity(asanexampleofgeodiversityinabroadsense),inordertodectectthedifferencesandsimilaritiesbetweenbothnaturalresources,biologicalandnon-biological,ThediscussionhasmainlybeenconductedthroughthestudyoflandformbasedpedodiversityanalysisappliedtoSOTERdigitaldatabasesinHanianIslan,China,ThemainanalyticalmethodsincludeindicesofrichnesSthatarethenumberofthecategories(SOTERunitsrelatingtodifferentsoilsinthiswork),indicesbasedonproportionalabundanceofcategoriesHandEwhicharenotonlythenumberbutalsotheirrelativeabundance(inourcase,therelativeareaoccupiedbyeachpedotaxa)istakenintoaccount,modelsofthedistributionofabundaceofcategoriesthatprovidethemostcompletedescriptionbutalsotheleastabridgedandGISmappingtoshowthespatialvariationdigitally.
简介:Medog NoLonger An 'Isolated Island'MedogNoLongerAn'IsolatedIsland'¥byNamgyaiandNorbuceremoniesarehildinbothZhamogandMedogtoin...
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:SijiaoIslandinShengsiCountyofZhejiangProv-inceislocatedatnorthofZhoushanIslands,theconfluenceofYangtzeandQiantangriver(N30°24′,E122°28′),79nauticalmilesfromShanghai,whereconvenientincommu-nicationandrichinwindenergyresourceswithanannualaver-agewindvelocityof7.1m/sandaverageeffectivewinddensityof410.4W/m~2,whichisamonghighestinthecountry.Since1976,theWindPowerLaboratorywassetupinShengsiCounty,aseriesofwindpowerexperimentswascarriedoutandaccumu-latedcertainexperiences.
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.