森林工程2009，Vol.25Issue(4)：10-13,36,5.
落叶松人工林径阶分布与经济轮伐期的研究
Study on Diameter Class Distribution and Economic Rotation of Larix gmelini Plantation
摘要
Abstract
According to the goal of plantation cultivation and the concept of wood grading use, taking the Larix gmelini plantation in Mengjiagang forest farm of Heilongjiang province as study case, the diameter distribution law of forest stand was stud-ied with Weibull function. Detailed output volume of each diameter class and merchantable volume of different woods could be ob-tained by using prediction model and the operation income was calculated. The economic rotation period was determined according to the radio of benefit and cost (RBC) as well as the net present value (NPV) using economic appraisal dynamic analysis meth-od, which was 13～18 years. When stand density was 1000 per hm2, the maximum of RBC and NPV was 3.865 3 and 9 574.3 yuan respectively; when stand density was 1500 per hm2, the maximum of RBC and NPV was 4.248 6 and 14 408.6 yuan respec-tively; when stand density was 2000 per hm2, the maximum of RBC and NPV was 4.493 7 and 16 705.9 yuan respectively; when stand density was 2 500 per hm2, the maximum of RBC and NPV was 4.685 and 19 256.3 yuan respectively; when stand density was 3000 per hm2, the maximum of RBC and NPV was 4.867 1 and 21 749.7 yuan respectively. The economic benefits were rela-tively remarkable, and the result also indicated that the economic rotation got longer as the stand density of Larch plantation in-creased.关键词
落叶松人工林/径阶分布/经济轮伐期Key words
Larix gmelini plantation/diameter class distribution/economic rotation分类
农业科技引用本文复制引用
高洪亮,李凤日,贾炜玮..落叶松人工林径阶分布与经济轮伐期的研究[J].森林工程,2009,25(4):10-13,36,5.基金项目
国家"十一五"攻关项目(2006BAD24B06) （2006BAD24B06）
