立木削度模型建立与应用的探讨

通过调查福建省龙岩市126个伐区标准地的样木,选用严若海1992年提出的立木削度方程,建立了龙岩市杉木、马尾松、阔叶树三个立木削度模型,方差分析表明模型线性回归关系极显著。经伐区标准地检验和近三年多来的实际应用,出材量误差率基本小于10%,达到伐区调查设计的精度要求,弥补了任意造材分径阶出材量计算的空白,成为福建省龙岩市源头计征税费,精确评估立木价值的计算依据。

Establishment and Implementation of Standing Tree Taper Models

On the basis of surveying the sample trees at 126 cutting plots in Longyan City, Fujian Province and adopting the standing tree taper model raised by Yan Ruohai in 1992, three standing tree taper models are established, named as Chinese-Fir, Pinus-Mass and Broadleaf Variance analysis shows that those models'linear regression relationship is extremely conspicuous According to cutting plot verification and the practical implementation in the past three years, the outturn error rate is basically less than 10% Therefore, they meet the precision requirements of cutting area survey and design Moreover, this fills in the blank of any type of outturn calculation by diameter group, and acts as the calculating basis of levying taxes and standing tree value accurate estimation in Longyan city, Fujian Province