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长白落叶松10—15年生人工林不同病情与树高生长损失率回归方程为Y=A+BX,与胸径、材积生长损失率为Y=Yc/1+e~(A+Bx)。树高生长损失随病情加重呈直线上升,胸径和材积生长损失随病情加重呈“S”曲线上升。一年发病至少影响三年生长,以第二年损失最大。不同病情每公顷林分立木材积生长损失量为Y=9.8/1+e~(7.3459-0.1x)。
The regression equation of growth and tree height loss of 10-15 years old Larix olgensis plantations was Y = A + BX, and the diameter growth and volume loss was Y = Yc / 1 + e ~ (A + Bx). The tree height growth loss increased linearly with the increase of disease severity. The DBH and volume growth loss increased with the increase of “S” curve. The incidence of one year affects at least three years of growth, the largest loss in the second year. The biomass loss per hectare of different diseases was Y = 9.8 / 1 + e ~ (7.3459-0.1x).