摘要
利用创立的新绝对形数研究林木形质生长规律 ,发现林木形质生长的总趋势是随年龄增长而增长 ,且随树高的增大而增大 ;揭示了形数与高径比的关系 ;根据形数随年龄增长而增长的规律 ,提出了分别年龄组编制二元材积表的构想 ,并以华北落叶松为例编制了 ～
Tree form factor growth regularity was studied using New Absolute Form factor(NAF) developde in 1997 by the authors,and a general trend was discovered that tree form factor increases as the tree age increases,and increases as the tree height increases.Then the relarions between form factor and height/d.b.h. ratio was revealed.On the basis of the regularity that form factor increases as tree age,it was suggested to compile general volume tables on age classes and an example was given of North china Larch general volume table on Ⅰto Ⅲage classes.
出处
《山西林业科技》
2001年第2期1-8,共8页
Shanxi Forestry Science and Technology
关键词
形数
新绝对形数
二元材积表
高径比
形质生长
林木
form factor
New Absolute Form factor(NAF)
general volume table
height/d.b.h. ratio
