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