洪雅县柳杉林木生长过程分析
Analysis on Growth Process of Cryptomeria fortunei in Hongya County
代永刚1
作者信息
- 1. 雅安市雨城区林业局,四川 雅安 625000
- 折叠
摘要
为研究洪雅县柳杉林木生长过程规律,在洪雅林场设置9个样地,共采集9株平均木进行树干解析.结果表明:柳杉树高连年生长量与年平均生长量均在10a时达到最大值;胸径连年生长量在第10 a和30 a时两次达到峰值,胸径的速生期出现两个阶段,分别在5～12a和24～31a间;材积的连年生长量在30 a时达到最大值0.04408 m3,而平均生长量一直处于增长阶段,表明材积生长仍未达到数量成熟.利用Logistic方程拟合了柳杉的胸径、树高和单株材积与林龄的生长方程,拟合精度均在0.98以上.
Abstract
In order to research the growth process of Cryptomeria fortunei in Hongya county, 9 sample plots were set up in Hongya forest farm, and a total of 9 average trees were collected for trunk analysis. The results show that the maximum of current annual increment and average increment appeared in 10-year-old. The current annual increment of DBH reached its peak at 10-year-old and 30-year-old, and the fast-growing period of DBH appeared two times, during 5th～12th years and 24th～31th years. The maximum growth of current annual increment of volume appeared30-year-old, with 0. 04408 m3. The average increment of volume had been growing, and the volume hadn't reached the quantitative maturity. The Logistic equation was good to mode the growth of DBH, tree height and volume of Cryptomeria fortunei, the goodness of fit were more than 0. 98.
关键词
柳杉/生长过程/生长特性/洪雅县Key words
Cryptomeria fortunei/Growth process/Growth characteristics/Hongya county引用本文复制引用
出版年
2018
NETL
NSTL
维普
万方数据