摘要
研究了林分径阶蓄积量与材种出材量的估测模型,其基本原理是应用相对树高曲线法测定林分径阶蓄积量,应用一致性削度方程法计算径阶单木材种出材率;相对树高曲线法与一致性削度方程法是基于胸径和树高两个测树因子的二元立木材积测定系统,通过建立较完善的数学模型改进计算方法,提高估测效果。
The estimation model system of stand diameter class volnme and merchant volnme is studied systematically and comprehensivel.The basic principles are that the stand diameter class volume is calculated with relative tree height curve,and that the tree merchant volnme ratio of each diameter class is predicted by compatible taper equation.The method of relative tree height curve and of compatible taper equation are two variable estimation model system of tree volume,because they based on two masuration factors,i.e.,tree diameter and tree height.Predicting precision and accuracy are improved by developing more suitable model.
出处
《中南林业调查规划》
2004年第2期1-3,共3页
Central South Forest Inventory and Planning
关键词
径阶蓄积
材种出材率
相对树高曲线
相对干形曲线
一致性削度方程
Stang Diameter Class Volume
Merchant Volume Ratio
the Relative Tree Height Curve
the Relative Stem Curve
Compatible Taper Equation
