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对日本落叶松三测树因子采用了5个经验方程和灰色GM(1,1)模型进行研究,经验方程中选中了柯列尔式,柯列尔式的各测树因子的残差平方和均小于GM(1,1)的残差平方和.
Five empirical equations and Gray GM (1,1) model were used to study the tree-measuring factors of Larix kaempferi in Japan. The residual square sum of each of the Kirchhoff and Kirrlear tree-measure factors was selected in the empirical equation Are less than the square sum of residuals of GM (1,1).