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贝雷(Behre,1927)研究出双曲削度曲线,曾经广泛应用于计算树木材积,他的成果导出如下方程: d_i=D_i(L/a_i+b_iL) (1) d_o=D_o(L+a_o+b_oL) (2) 式中:
Behre (1927) developed the curve of hyperbolic curve, which has been widely used in the calculation of tree volume. The result of his work is as follows: d_i = D_i (L / a_i + b_iL) d_o = D_o (L + a_o + b_oL) (2) Where: