中南林业科技大学学报2025，Vol.45Issue(4)：14-23,10.DOI:10.14067/j.cnki.1673-923x.2025.04.002
广西马尾松立木干形差异性分析
The differential analysis of Pinus massoniana stand stem form in Guangxi
摘要
Abstract
[Objective]The stem form of stand trees is an important influencing factor in the determination of standing timber,by analyzing the differences of the stem form related indicators and accurately expressing the changes of stem form,is of significance for calculating tree species volume,guiding the compilation of tree quantity tables,and promoting precise management of forest storage resources.[Method]Based on 485 fallen sample trees of Pinus massoniana plantations in Guangxi and widely distributed sample plots and their analytical trees in various production areas,the changes of major stem form indicators including breast height form factor,experimental form factor and normal form factor were studied and compared in diameter and height class,Using coefficient of variation,one-way analysis of variance,and practical validation methods.[Result]The results showed that:1)the coefficient of variation of the experimental form factor in the form factor series index was the smallest at 7.65%,with a survey average of 0.408 0,which was significantly different from the currently value used experimental form factor of P.massoniana(0.396);The coefficients of variation in tree breast height and series of the normal height at 1/4,1/10,2/10,3/10 were relatively small,with values of 7.86%,8.36%,11.18%,12.23%,12.19%respectively;2)There was no difference in the experimental form factor and the breast-height form factor of the sample wood among different production areas in Guangxi;3)The actual volume of the other 320 fallen trunks as separate test sample were compared with the different method including the average value of experimental form factor application,the volume of the before and after standard volume table,the relative error of the volume in experimental form factor method was less than 2%.[Conclusion]There is no significant difference in the experimental form factor and breast height form factor of P.massoniana between different production areas in Guangxi.The coefficient of variation in experimental form factor is the smallest,and the accuracy is excellent using the form factor average value of sample trees.关键词
马尾松/实验形数/胸高形数/正形数/立木材积表Key words
Pinus massoniana/experimental form factor/breast height form factor/normal form factor/stand tree volume table分类
农业科技引用本文复制引用
韦立权,徐庆玲,曾春阳,刘峰,岑巨延..广西马尾松立木干形差异性分析[J].中南林业科技大学学报,2025,45(4):14-23,10.基金项目
广西林业科研项目(桂林科研[2016]31号、桂林科研[2015]15号、桂林科研[2016]24号). （桂林科研[2016]31号、桂林科研[2015]15号、桂林科研[2016]24号）
