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。
Using the basic data from anatomic tree investigation, the Logistic curve regression equation of basal area growth increment of Pinus kesiya vat. 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.
出处
《西部林业科学》
CAS
2007年第2期33-37,共5页
Journal of West China Forestry Science
基金
云南省科技攻关项目(2004NG05-05)
云南省发展和改革委员会重大科技攻关项目(云技科技182)
国家科技部农业科技成果转化资金项目(02EFN216700806)
国家林业局林业新技术新产品中间试验项目(〔2002〕林科中字05号)。
关键词
思茅松
人工林
胸径断面积
初始抚育间伐期
Pinus kesiya var. langbianensis
plantation
basal area growth increment
time for first intermediate cutting
