【摘要】 通过 6 1株立木的 14个按树高的相对区分段处直径建立离差平方和乘积矩阵 ,从此矩阵出发 ,进行主分量分析 ,导出干形曲线方程 ,并以此作为求立木树干材积的依据更多还原

【Abstract】 A matrix was established based on the diameters of 14 relatively region divided according to the height of 61 trees of Alnus cremastogyne.Main composition analysis were following carried out to lead a shape curve equation which was the base to calculate the trunk volume.更多还原