摘要
在定向培育纸浆林的基础上,综合长白落叶松纸浆林的工艺特性、林学特性和经济特性,确定出两个培育模式.实验表明:长白落叶松纸浆林最适宜在优良立地条件下培育.地位级越高、轮伐期越短,风险程度越小.I地位级2000株/hm^2密度下,轮伐期为18a,内部收益率和净现值分别可达24.12%和5714.56元/hm^2.Ⅱ2500株/hm^2密度下,轮伐期为21a,内部收益率和净现值分别可达19.52%和4232.33元/hm^2.
Based on cultivation pulp plantation. combining technological feature. forestryfeature and economical feature of Larix olgensis pulp plantation, two kinds ofcultivation models were determined. The result showed that Larix olgensis pulpplantation was the most suitable to cultivate on the excellent site condition. Thehigher the site class is, the shorter the rotation period, and the smaller thecultivation danger degree is. On the condition of site class I, with a density of2 000 stems/hm2 the rotation would be 18 years, IRR and NPV would be 24. 12%and ?514. 56/hm2 respectively. On the condition of site II, with a density of2 500 stems/hm2, the rotation period would be 21 years, IRR and NPV would be19. 52% and ?4 232. 33/hm2.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1996年第5期37-42,共6页
Journal of Northeast Forestry University
基金
国家"八五"攻关专题"落叶松纸浆材与建筑材栽培模式的研究"的部分内容.
关键词
长白落叶松
纸浆林
培育模式
轮伐期
收益率
Larix olgensisl
Pulp plantation
Cultivation model
Rotationperiod
IRR
NPV
