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用竞争密度 (C D)效果的倒数式分析了杉木的生长过程 .随着时间的推移 ,C D曲线在双对数图上向上移动 .随着物理时间t的增加 ,生物时间τ(τ被定义为逻辑斯蒂生长曲线中生长系数λ(t)的积分 )倾向于增加到最大值 .C D效果倒数式中的系数A和B被求出 .随着生物时间τ的增加 ,系数A急剧增加到最大值后下降 ,倾向于稳定在一个常数 ,而系数B呈指数下降 ,倾向于接近零 .随着林分的生长 ,生长系数λ(t)倾向于下降 .
The growth of Chinese fir was analyzed using the reciprocal of the competitive density (CD) effect. As time went on, the CD curve shifted upward on the log of the log. As the physical time t increased, the biological time τ (τ was defined as The integral of the growth coefficient λ (t) in the logistic growth curve tends to increase to the maximum value. The coefficients A and B in the reciprocal of the CD effect are found. The coefficient A sharply increases to the maximum as the biological time τ increases After the value declines, it tends to stabilize at a constant while the coefficient B decreases exponentially and tends to approach zero. The growth coefficient λ (t) tends to decrease with stand growth.