摘要
根据78块5 ～ 13年生杉木速生丰产林(以下简称速丰林)的标准地调查资料,对照林业部颁发的杉木速丰林标准,分Ⅰ(地位指数16 ～ 18)、Ⅱ类林(地位指数12 ～ 14)建立高、径平均值与年龄相关回归方程,预测到达主伐期的木材产量.根据投入与产出,计算出70 005.3hm2杉木速丰林到达主伐期的财务指标为:净现值(FNPV)= 33 475.7万元(折现率12%),内部收益率(FIRR)= 25.4%.
Based on data of 78 sample plots from 71,500 ha of 5-13-year fast-growing high-yield Cunninghamia lanceolata forest in Zhejiang province and Standard of Fast-growing High-yield Cunninghamia lanceolata Forest issued by Ministry of Forestry, regression equation was established to forecast timber yield at the age of final cutting between mean height and D.B.H. with age of first class forest (with 16-18 site index) and second one (with 12-14 site index). FNPV and FIRR at the age of final cutting could be calculated as follows: 334,750,000 yuan RMB and 25.4% according to input and output of fast-growing and high-yield C. lanceolata forest. The result showed that this project had significant economic benefit.
出处
《浙江林业科技》
2003年第3期65-69,78,共6页
Journal of Zhejiang Forestry Science and Technology
基金
浙江省林业世行贷款项目"杉木速生丰产技术研究与推广"的部分内容
关键词
杉木
速生丰产林
经营技术
效益分析
财务指标
生长量
Cunninghamia lanceolata
fast-growing and high-yield
regression analysis
economic benefit evaluation
