摘要
以福建省漳州九龙岭国有林场12年生的大花序桉为研究对象,采用标准样地法和标准木树干解析法研究大花序桉人工林的生长规律。结果表明:大花序桉在引种地区长势表现出较强的生长适应性,大花序桉胸径、树高在1~4 a时增长迅速,胸径平均生长量在3 a时达最大值(3.233 cm·a^(-1)),树高平均生长量在4 a时达最大值(3.58 m·a^(-1));单株材积平均生长量随着林龄的增大呈现出不断上升的趋势,材积连年生长量大于材积平均生长量且未出现最大峰值和相交迹象,表明大花序桉人工林还未达数量成熟;大花序桉人工林单株生物量为481.45 kg·株^(-1),大花序桉人工林净生产力为24.11 t·hm^(-2)·a^(-1),植株不同器官按净生产力排序为树干>树皮>树枝>树叶,分别占比为87.97%、5.48%、4.85%、1.71%。
The growth regularity of Eucalyptus cloeziana were studied by using standard plot method and standard tree trunk analysis method.The results showed that the 12-year-old Eucalyptus cloeziana grew well in the introduction region and showed strong growth adaptability.The DBH and tree height increased rapidly from 1 to 4 years.The average DBH growth reached a maximum of 3.233 cm·a^(-1) at 3 years and the average tree height growth reached a maximum of 3.58 m·a^(-1) at 4 years.The average volume growth per plant showed an increasing trend with the increase of stand age.The annual volume growth was significantly different from the average volume,and there was no maximum peak value or intersection sign,indicating that the Eucalyptus cloeziana had not reached quantitative maturity.The biomass per plant of Eucalyptus cloeziana was 481.45 kg·plant-1,and the net productivity of Eucalyptus cloeziana was 24.11 t·hm^(-2)·a^(-1).The ranking of net productivity were trunks>barks>branches>leaves,accounted for 87.97%,5.48%,4.85%and 1.71%,respectively.
作者
洪小龙
HONG Xiaolong(Chishan Forest farm,Dongshan country,Fuzhou 363400,Fujian,China)
出处
《福建林业科技》
2021年第3期31-36,共6页
Journal of Fujian Forestry Science and Technology
基金
福建省区域发展项目(2015N3015)。
关键词
大花序桉
生长规律
生物量
生产力
Eucalyptus cloeziana
growth regularity
biomass
productivity
作者简介
洪小龙(1986-),男,福建省东山赤山国有防护林场工程师,硕士,从事森林培育研究。E-mail:873923259@qq.com。
