Pilot Study to Examine Radial Variation in Annual Ring Width, Density and Shrinkage

作     者：URAKAMI Hiroyuki HIRAKAWA Yasuhiko YAMASHITA Kana 

作者机构：Research Institute of Wood Industry Chinese Academy of Forestry Beijing 100091 ChinaForestry and Forest Products Research Institute JapanForestry and Forest Products Research Institute Japan 

出 版 物：《Chinese Forestry Science and Technology》 (中国林业科技（英文版）)

年 卷 期：2003年第2卷第4期

页      面：25-30页

学科分类：0907[农学-林学] 090704[农学-森林经理学] 09[农学] 

主　　题：plantation wood annual ring width density variation shrinkage characteristics Chinese fir Boka sugi 

摘      要：The annual ring width, density and shrinkage variation from pith to bark in Chinese fir (Cunninghamia lanceolata) and Boka sugi (Cryptomeria japonicd) were studied and compared. The results show that the ring width decreased sharply from pith to bark for Chinese fir. However, the ring width variation pattern for Boka sugi followed a different way, i.e., the ring width decreased to the fifth ring, increased to the tenth ring, decreased again to the fifteenth, and then increased to the twentieth, where it...