浙江省立木材积表的编制

本文对目前常用的立木材积表的编制方法作了改进,采用随机、分散方法选测样木,应用回归分析方法修正因围尺测径造成的系统误差。编表的数学模型,采取中国林科院分析研究结果,二元材积表用山本材积式导算,一元材积表用全国材积式和浙江省双曲线树高方程导算。编成的浙江省各主要树种组二元立木材积表和4个区域的一元立木材积表,经伐倒木检验,精度较高。

Orgnization of tree volume table for Zhejiang Provinoe

This paper revised and improved the generally used method for orgnizing tree volume table. By random and dispersion method to select and measure the sample trees, the regression analysis was employed to correct the systematic error caused by D. B. H. measurement with band tape. The mathematical model used in orgnizing table adopted the reseach results of Chinese Forestry Academy, binary volume table was calculated by Yamamoto volume equation, and unary volume table by the National volume equation and the Zhejiang hyperbola height equation. Tested with felled trees showed that the orgnized binary tree volume table of each main tree species group of Zhejiang province and unary tree volume table of 4 regions in Zhejiang all have a higher precision.