不同林分密度降香人工林生长量与树冠层因子的关系  

Relationships among Growths and Canopy Factors of Dalbergia odorifera Plantations with Different Stand Densities

作　　者：刘慧兰 余慧霖 陈毅青 黄海[1] 吴向荣 陈海辉 张学丰 余雪标[1] Liu Huilan;Yu Huilin;Chen Yiqing;Huang Hai;Wu Xiangrong;Chen Haihui;Zhang Xuefeng;Yu Xuebiao(Hainan University,Haikou,Hainan 570228,China;Hainan Academy of Forestry(Hainan Academy of Mangrove),Haikou,Hainan 571100,China)

机构地区：[1]海南大学,海南海口570228 [2]海南省林业科学研究院(海南省红树林研究院),海南海口571100

出　　处：《广西林业科学》2024年第2期219-224,共6页Guangxi Forestry Science

基　　金：海南省重点研发计划项目(ZDYF2020075);桉树人工林生态环境影响监测(RH2000008400)。

摘　　要：为给降香(Dalbergia odorifera)人工林经营措施优化提供理论依据,以降香人工林为研究对象,采用相关性分析法和通径分析法研究生长量与树冠层因子的关系。结果表明,随林分密度增大,降香人工林的胸径、冠幅和树冠体积均减小,树高和冠长率均呈先升后降的趋势,冠形率增大。相关性分析结果表明,不同林分密度降香人工林生长量和树冠层因子大多呈显著或极显著相关性。通径分析结果表明,冠幅、冠形率和冠长率对树高和胸径的直接影响和间接影响均较复杂,冠幅对胸径和树高的影响均较大。In order to provide theoretical basis for optimization of management measures in Dalbergia odorifera plantations,taking D.odorifera plantations as research objects,correlation analysis and path analysis methods were used to study relationships among growths and canopy factors.Results showed that with increase of stand density,DBH,crown width and crown volume of D.odorifera plantations decreased,tree height and crown length ratio showed trends of firstly increase and then decrease,and crown shape ratio increased.Correlation analysis results showed that most of growths and canopy factors were significantly or extremely significantly correlated in D.odorifera plantations with different stand densities.Path analysis results showed that direct and indirect effects of crown width,crown length ratio and crown shape ratio on tree height and DBH were more complicated.Effects of crown width on DBH and tree height were larger.

关 键 词：林分密度 生长量 树冠层因子 通径分析 降香 

分 类 号：S757.1[农业科学—森林经理学]