首先计算基准年龄时导向曲线树高值与基准年龄时第18指数级树高值的差值d

The difference d exponential tree height value of the guide curve 18 and the reference value of the tree height age at first calculates a reference Age = H_Oj-H_Ok = 0.80m, then calculates the adjustment coefficients K_j = (H_Oj-Hok) / S_Ao ≈0.24, and finally the adjustment coefficient K_j with age tREES high standard deviation of theory S_Ai multiplied by the first order in each age adjustment value K_j · S_Ai. After each water fir instar stage tree height guide curve with age H_ik order to obtain adjustment values ​​for each age subtracting stage 18 to adjust the level based on a high index value H_O.

First, the difference between the high value of the guide curve tree and the 18th exponential tree height value at the base age is calculated, d is H_Oj-H_Ok , 0.80m, and then the adjustment coefficient K_j is calculated ( H_Oj-Hok) / S_Ao , and then the adjustment coefficient K_j S_Ai the high standard deviation between the age tree S_Ai, and the adjustment value of each age level is K_j. S_Ai. The high value of the age-oriented curve tree is reduced H_ik the adjustment value of each age level to obtain the high-value H_O of the water fir tree adjusted on the basis of 18 exponential levels.

First, the difference between the height of the guide curve tree at the reference age and the height of the 18th index tree at the reference age is calculated, d = h_j-h_uk = 0.80M, then the adjustment coefficient k_j = (h_j-hok) / s_ao ≈ 0.24 is calculated, finally, the adjustment coefficient k_jis multiplied by the theoretical value s_uai of the height of the trees at each age stage, and the adjustment value k_j · s_ai of each age stage is obtained. By subtracting the height h ﹤ IK of each age stage guide curve tree from the adjusted value of each age stage, we can get the height h ﹤ o of each age stage guide curve tree based on the 18 index level.<br>