秃杉人工林生长规律研究

The Growth Regularity of Taiwania flousiana Plantation

本文对德化葛坑国有林场1996年种植的秃杉人工林的生长规律进行分析研究,胸径连年和平均生长量的最大值均在第6a出现,平均生长量与连年生长量相交的时间为第8a;而树高连年生长量最大值出现在第5a,平均生长量最大值则出现在第6a,平均生长量与连年生长量先后4次相交,在13a以后,连年生长量小于平均生长量;秃杉在生长初期它的材积增长很缓慢,在11a以后生长一直都很快,到19a时,还是没有达到数量成熟。

In this paper, the growth regularity of Taiwania flousiana planted in 1996 in Dehua Gekeng National Forest Farm was studied. The results were as the followings： the maximum successive annual DBH growth increment and av- erage DBH growth increment of T. flousiana appeared on the 6th year, and the intersecting time of the average growth increment and annual growth increment appeared in the 8th year; the maximum tree height growth increment appeared in the 5th year, the average growth increment appeared in the 6th year, and there were four intersecting times of the average growth increment and the annual growth increment. After 13 years old, the annual growth increment of tree height was less than the average growth increment. In the early stage, T. flousiana grew slowly in volume. After 11 years old it grew fast, but it did not reach the quantitative maturity plantation until 19 years old.