探索体积悖论:比较估计尼泊尔树木和日志木材体积的不同公式
Pawan Karki1, Shambhu Dangal1, Edwin Cedamon2
1Nepal Country Office, Regional Community Forestry Training Center for Asia and the Pacific (RECOFTC), Lalitpur, Nepal.
Scientifica
|January 23, 2026
概括
在比较林业体积估计公式时,全度方程显著改变了木材和柴火体积,而Huber的公式比四分之一周长法增加了体积. 这两种方法都显示在砍伐过程中损失了大量的木材.
科学领域:
- 林业科学 林业科学
- 生物质评估生物质评估
- 森林管理 森林管理
背景情况:
- 准确的树木和日志体积估计对于林业应用至关重要.
- 目前正在讨论各种体积估计公式的有效性.
研究的目的:
- 为了比较分析休伯方程,全度方程,四分之一周长,以及估计立树和日志体积的基于形式因子的公式.
- 通过使用不同的公式来评估在砍伐和削阶段的木材损失.
主要方法:
- 实地测量了168棵砍伐的树木和1192个日志.
- 使用休伯公式,全度方程,四分之一周长公式和基于形状因子的公式进行比较分析.
- 统计分析包括ANOVA和对对 t 试验.
主要成果:
- 与形状因子公式相比,全度方程导致木材数量减少0.8%,木材数量增加78.6%,与形状因子公式相比.
- 与四分之一周长公式相比,Huber的公式显示了27.34%的体积增加.
- 在公式 (p=0.00004) 中,每棵树的平均体积存在显著差异.
- 采用四分之一周长公式的木材损失为37.06%,采用胡伯公式的木材损失为19.86%.
结论:
- 选择的体积估计公式显著影响木材和木柴的体积计算.
- 立树的四分之一周长和形状因子公式与全方位方程有很大差异.
- 在砍伐树木时,木材损失很大,根据使用的估计公式而有所不同.
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