摘要
通过对３７０株油松根径（Ｄ＿ｏ）和立木材积的相关分析，建立了回归方程，并运用加权最小二乘法估计了回归方程的参数，确定了最合理模型：
Based on the correlation analysis of 370 sample trees between ground diameter（D0）equations for D0 and tree volume were established.Its parameters were estimated usingthe method of weighted least squre.The most reasonable model:was created.
关键词
根径
立木材积
相关分析
油松
ground diameter
tree volume,correlation,Chinese pine
