1、⑧謝己工工毒女垮碩士學位論文論文題目：墨王疊曼墅墮曲蠢拄盟室僉煎墮真與亙擔絲作者t＆g：鹽壁自指導教師基壹學科專業(yè)鹽墨墊座旦墊查所在學院焦墨三壁芏照提交日期2Q鯉主4旦!目浙江工業(yè)大學碩士學位論文SIMULATIoNANDVISUALIZATIoNONSPACE—TIMEDISTRIBUTIoNoFFoRESTBASEDoNENVIRoNMENTABSTRACTTheForestdynamicchangeshavetwodistinct

2、characters：longtimescaleandlargespacescale，whichmakeforestryresearchmoredifficultInVirtualForestEnvironments，complexforestobjectsareconstructed；thelawsofstandgrowtharepresentedandanalyzedwithcomputergraphicstechnologyand

3、forestryknowledgeSoVirtualForestEnvironmentscallprovideanewwayforforestryresearchPresentlytherearefewmodelsofforestspace—timedistributionconstructedbased0nthegrowth，mortalityandregenerationofsingletreeAndtheoutputresults

4、aremainlyindiagramform，whicharenotintuitionisticInthisthesiswedevelopourforestspacetimedistributionmodelbasedontheforestgapmodelbytheenvironmentalfactors，especiallythespecificterrainsituationAndthenthevisualizationmodule

5、renderstheterrainscenewithdigitalelevationmap(DEM)，andvisualizesthetrees’distributionbasedOiltheforestevolvingresultThemainworkofthisthesisiSasfollows：1Theadvancementofrelatedresearchfieldsissummarizeddetailedlyfromthree

6、aspects，ie，forestgrowthmodelandforestmanagementmodel，geometricmodelingandrenderingofsingletreeandforestvisualizationnedrawbackofaboveresearchisalsopointedout2Basedonthecurrenttreegrowthmodel，weconstructouttreegrowthmodel

7、inwhichtheinfluenceofenvironmentalfactorsiSconsidered3BasedOilthetreegrowthmodelinforestenvironment，weconstructourforestevolvingmodeltakingmortalityandregenerationofsingletreeinaccount4Basedonthedistributionandgrowthsitu

8、ationoftreeswerendertheforestscenewithLODandBillboardtechnique5ThethesisimplementstheprototypesystemofspacetimedistributionofforestbasedonenvironmentwiththemodelreferredaboveKeyWords：forestgrowthsimulation，forestvisualiz