格氏栲古树生长特性  

The Growth Characteristics of the Ancient Tree of Castanopsis kawakamii

作　　者：施友文 SHI Youwen(Fujian Forestry Investigation and Planning Institute,Fuzhou 350003,Fujian,China)

机构地区：[1]福建省林业调查规划院,福建福州350003

出　　处：《福建林业科技》2021年第2期48-52,共5页Journal of Fujian Forestry Science and Technology

基　　金：福建省林业科研项目(格氏栲苗木繁育及造林技术研究,闽林科便函[2019]16号)。

摘　　要：2019年8月,在福建省三明格氏栲自然保护区不同生长环境中选择3株倒伏多年、根部离地的格氏栲枯死古树作为研究对象,采用树干解析法对格氏栲古树生长特性进行研究。结果表明:天然次生格氏栲古树早期生长缓慢,树高、胸径、材积快速生长期较迟,树高快速生长期出现在20~30 a间,持续时间比较短;胸径快速生长期比树高迟2~3 a,但持续时间较长;材积从30 a开始缓慢积累,50 a后加速生长直至140 a后,材积平均生长量与连年生长量相交于140~148 a间,数量成熟期出现在147.5 a,生长后劲大,适宜培育大径材。研究结果可为完善格氏栲人工栽培技术提供参考。In August 2019,three old trees of Castanopsis kawakamii fallen for many years and their roots were removed from the ground were selected as the research objects in different growth environments of Sanming Castanopsis kawakamii Nature Reserve in Fujian Province.The growth characteristics of ancient trees of Castanopsis kawakamii were studied by trunk analysis method.The results showed that the growth of natural secondary Castanopsis kawakamii was slow in the early stage,the growth period of tree height,DBH and volume was late.The rapid growth period of tree height appeared between 20~30 a and the duration was relatively short.The rapid growth period of DBH was 2~3 a later than tree height,but it lasted longer.Volume accumulation began slowly from 30 a and accelerated after 50 a until more than 140 years later.The average volume growth and annual growth intersected between 140~148 a,and the Quantitative maturity occured at 147.5 a.The data indicated that it had great growth aftereffect and was suitable for cultivating large-diameter wood.The results can provide reference for improving the artificial cultivation techniques of Castanopsis kawakamii.

关 键 词：格氏栲 古树 树干解析 生长特性 

分 类 号：S792.17[农业科学—林木遗传育种] S758.2[农业科学—林学]