文献类型：期刊文献

中文题名：大岗山杉木人工林主伐年龄的研究

英文题名：A Study on Felling Age of Chinese Fir Plantation

作者：盛炜彤[1] 惠刚盈[1] 罗云伍[2]

第一作者：盛炜彤

机构：[1]中国林业科学研究院林业研究所;[2]中国林业科学研究院亚热带林业实验中心

年份：1991

卷号：4

期号：2

起止页码：113-121

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心1992】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：杉木;人工林;主伐年龄;生长模型

外文关键词：Chinese fir; maturity; felling age; polymorphic growth model; stand structure model

分类号：S791.270.6

摘要：本文对江西省大岗山杉木人工林主伐年龄进行了系统的研究。试验选定Richard生长模型为杉木人工林生长的基本模型,并将地位指数引入该模型,建立了以地位指数和年龄为自变量的7参数多形型生长模型;根据生长与收获兼容性原理求得数量成熟龄;借助Weibull分布函数建立了林分结构模型,按材种标准确定工艺成熟龄;用调整后的杉木木材影子价格计算木材收入;采用贴现法进行经济分析,并用净现值最大确定经济成熟。依据“以工艺成熟为基限,重点考虑经济成熟,适当兼顾数量成熟”的原则设计出两种可供选择的主伐模式。经与现行的主伐年龄相比,其内部收益率均有较大提高,盈利率提高量最高可达8％以上,经济效果十分显著。
The felling age of Chinese fir plantation was systematically studied in Daganshan Area. Richards function was selected as the basic growth model of Chinese fir plantation, and site index was introduced into chis model to establish a polymorphic growth model with 7 parameters, using the site index and tree age as the varibles. The quantitative maturity was calculated based on the principle of growth and yield compatibility, and stand structure model on Weibull function, technical maturity on the cultivated timber assortment, acceptable return on investiment was calculated by the readjusted timber shadow price. By means of discounted measure, economic analysis was analysed and economic maturity was determined by the maximum net present value. Two alternative felling age models were proposed on the basis of technical maturity with a emphatical considering of economic maturity and an approprite considering of quantitative maturity. The model has a notable economic return. Comparing the felling age determined by our models with the current felling age, the internal rate of return can be raised and the maximum profit rate can be increased by over 8%.