【摘要】 应用思茅松人工林解析木所获的基础数据,建立了其林木胸径断面积生长量的Logistic曲线回归方程:y=202.134/(1+45.92 e-0.5101 t),依据此回归方程的几何特征,对思茅松人工林取样林分的林木胸径断面积生长量、断面积连年生长量的变化特点作了分析。进而确立并论述了以林木胸径断面积连年生长量确定思茅松人工林初始抚育间伐期的方法。更多还原

【Abstract】 Using the basic data from anatomic tree investigation,the Logistic curve regression equation of basal area growth increment of Pinus kesiya var.langbianensis was established as y = 202.134/(1 + 45.92 e-0.5101t).The variation characteristics of basal area growth increment and successive years’growth were analyzed in accordance with the geometrical characteristics of established equation.The method for determining the first intermediate cutting time of Pinus kesiya var.langbianensis plantation by basal area successive years’growth was described.更多还原