形状指数的变动及树干几何体变化规律的研究  

A study on the changing values of form index andgeometrical solids of tree stem

作　　者：张景兰[1] 张恩生 张锁成[1] 崔立志 于泊 陈东来[1] 

机构地区：[1]河北农业大学林学院,河北保定071000 [2]河北省孟滦林管局,河北围场068450

出　　处：《河北农业大学学报》2007年第5期66-70,共5页Journal of Hebei Agricultural University

摘　　要：用Kunze M.曲线模型的形态指数公式,对桦树、山杨和落叶松树干形态指数的变动及树干几何变化规律进行研究,为森林资源管理、培育优良木材提供理论参考。研究结果表明:桦树、山杨和落叶松树干中抛物线体部分占绝大部分,其中桦树为65.7%、山杨为59.7%、落叶松为65.7%。In light of Kunze＇s Curve Model of form index, this paper studies the changing values of form index and geometrical solids of Betula, Populus Dividiana and Larix sterns, aiming to proide theoretical guidance for management of forestresources and the development of timber industry. The research findings indicate that paraboloids account for the overwhelming majority of geometrical solids, with 65.7 % for Betuta, 59.7% for Populus dividiana, and 65.7% for Larix stems respectively.

关 键 词：形状指数 树干 干曲线 

分 类 号：S758.6[农业科学—森林经理学]