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Basic Research on Introducing Electrical Conduction into Wood Quality Rating and Wood Quality Management of Sugi (Cryptomeria Japonica) Cultivars and Karamatsu (Larix Leptolepis).

将电传导引入杉木（Cryptomeria Japonica）品种和唐松（Larix Leptolepis）木材质量评级和木材质量管理的基础研究。

基本信息

批准号：
01560190
负责人：
TSUTSUMI Juichi
金额：
$ 1.34万
依托单位：
Kyushu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1990
项目状态：
已结题

项目摘要

The basic purpose that this research aims at is to extend fundamental knowledge, which provides information for setting the parameters in the wood quality control procedure and the wood quality management by using electrical conductivity.It is important to analyze the interaction between the wood structure and the physical and mechanical properties to attain the purpose of this research.The information obtained on the basis of precise experiments is indispensable to introducing the electrical conductivity into wood quality control procedures.The results obtained in the research were as follows.1) Wood quality concepts were considered in relation to the wood industry and the forest industry.2) The electrical conductivity will be able to gain acceptance as a wood quality index.3) The values of coefficient of variation for intrinsic wood properties which have been accumulated in recent years were tabulated.Particular variations arising from genetic variation were recognized in given sugi cultivars.An applicalbility of introducing intrinsic wood properties to quality control were discussed by using karamatsu, and there still remains some problems.4) The effect of the wood structure on the mechanical behavior within growth increments was analyzed.5) The effects of microfibril angle and tracheid cell wall thickness on the electrical conductivity were determined quantitatively.

本研究的基本目的是为了扩展基础知识，研究结果为木材质量控制过程中的参数设置和利用电导率进行木材质量管理提供了依据，分析木材结构与物理力学性质之间的相互作用对实现本研究的目的具有重要意义，而精确的实验基础上所获得的信息是不可缺少的将电导率引入木材质量控制程序中，研究结果表明：1）木材质量概念与木材工业和林业有关; 2）电导率将能够作为木材质量指标获得认可。3）表列了近年来积累的木材内在性质变异系数值，并指出了遗传变异引起的特殊变异，探讨了用Karamatsu法将木材内在性质引入质量控制的可行性，并指出了存在的问题; 4）分析了生长过程中木材结构对力学行为的影响; 5）定量测定了微纤丝角和管胞壁厚对电导率的影响。