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该文通过５３０林杨树立木调查资料，分别采用８种模型进行回归拟合，经过误差比较与精度分析，选出Ｖ＋Ｃ１＋Ｃ２Ｄ＋Ｃ３Ｄ２＋Ｃ４ＤＨ＋Ｃ５Ｄ３Ｈ＋Ｃ６Ｈ作为杨树二元立木材积方程模型，供编制立木材积表与科研生产中使用。
In this paper, through regression analysis of 530 poplar trees, 8 models were used for regression fitting respectively. After error comparison and accuracy analysis, V + C1 + C2D + C3D2 + C4DH + C5D3H + C6H was selected as the model of binary tree volume equation for poplar, use.