福建杉木人工林经营密度控制图研制与应用分析

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1、万方数据mentionedindicescouldnotfurtheridentifytheoptimummodel．Thereforeweconducted1cave—one．outCross．validationanalysisusingthedataof16sternanalysistreestoinvestigatetheoptimummodel．TheresultsindicatedthatRichardsmodel(model23)23showedthebestperformanceandwasselectedtobetheoptimummodel．

2、TheoptimummodelcouldcontributethepreciseperditionofCunninghamialanceolataindividualsinthestudyarea．3、Self-thinningmodelindifferentsiteconditionOurresultsdemonstratedthatindifferentsiteconditiontheslopeofself-thinningmodelvaried．Therefo佗．ifwedevelopthedensitymanagementdiagramwithoutco

3、nsiderationofsitecondition，biasedestimationwouldoccurred，whichofcoursemislcadthemanagementpractices．4)ConstructionandapplicationofdensitymanagementdiagramWeselectedthefullystockedstandforconstructingdensitymanagementdiagram．WimMregression，wedevelopedtheself-thinninglineforCnnninghami

4、alanceolataplantation．Inaddition，wealSOdeterminedtheoptimumgrowthintervallineaswellasthecanopyclosureline．Byapplyingthedensitymanagementdiagram，wemodel3differentsilvicultureoptionsfor3standsofdifferentdensity．Theresultwillcontributetotheindentificaitonoftheoptimummanagementoption．5)C

5、onstructionofwarningdiagramforstanddensityandmanagementsuggestionW色categorizedtheCunninghamialanceolataplantionintosuitabledensity,lowdensity,highdensity．Based01"1GIS，wedevelopedwamingdiagramforstanddensityandmanagementandhencerealizedthespatialdescriptionofdensitydistribution．Forhig

6、hdensitystand，weproposedthemethodsofselectingthecuttingtreebasedonforestspatialinformation．Keywords：Cunninghamialanceolataplantation；Densitymanagement；Self-thinningrule；Densitymanagementdiagram万方数据目录1绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．11．1引言⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯

7、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．1．1研究背景⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．11．1．2研究目的和意义⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．41．2研究综述⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯41．2．1自然稀疏规律研究⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．41．2．2林分经营密度研究⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．51．2．3林分密度控制图的研究⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．81．3空间结构下杉木林抚育间伐

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