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| 北亚热带高山区日本落叶松纸浆用材林初植密度的研究 | |
| 引用本文： | 祁万宜,孙晓梅,张守攻,张鲜艳,王军辉.北亚热带高山区日本落叶松纸浆用材林初植密度的研究[J].华中农业大学学报,2007,26(4):552-556. |
| 作者姓名： | 祁万宜 孙晓梅 张守攻 张鲜艳 王军辉 |
| 作者单位： | 1. 湖北省宜昌市林业科学研究所,宜昌,443111 2. 中国林业科学研究院林业研究所/国家林业局林木培育重点实验室,北京,100091 3. 湖北省宜昌市大老岭林场,宜昌,443111 |
| 基金项目： | 国家“十五”攻关项目(2002BA515B0401)，国家“十一五”科技支撑项目(2006BAD24B06)资助 |
| 摘 要： | 对湖北省宜昌市大老岭林场的5种密度15 a生日本落叶松试验林观测数据进行分析,研究了密度对历年生长量的影响,并对纸浆材轮伐期内不同密度的经济效益进行评价。结果表明:平均胸径、树高、单木材积和冠幅均表现出随初植密度减小而增大的趋势,单位面积蓄积量和枝下高则表现出随初植密度增大而增加的趋势,净现值(NPV)、效益成本比(BCR)和内部收益率(IRR)也表现出随初植密度的增大而增加的规律性;初植密度除了对15 a生日本落叶松单位面积蓄积量有极显著影响外,对其它生长量的影响均不显著。在北亚热带高山区营建短周期纸浆用材林应适当密植,初植密度可以达到每公顷4 050株或3 333株,15 a生时蓄积量最高,收益最大。 |
| 关 键 词： | 日本落叶松 初植密度 纸浆用材林 生长 经济效益 |
| 文章编号： | 1000-2421（2007）04-0552-05 |
| 修稿时间： | 2006-11-24 |
Initial Density of Larix kaempferi Pulpwood Plantation for Northern Sub-tropical Alpine Area |
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| QI Wan-yi,SUN Xiao-mei,ZHANG Shou-gong,ZHANG Xian-yan,WANG Jun-hui.Initial Density of Larix kaempferi Pulpwood Plantation for Northern Sub-tropical Alpine Area[J].Journal of Huazhong Agricultural University,2007,26(4):552-556. | |
| Authors: | QI Wan-yi SUN Xiao-mei ZHANG Shou-gong ZHANG Xian-yan WANG Jun-hui |
| Institution: | 1. Research Institute of Forestry of Yichang City, Hubei Province ,Yichang 443111, China; 2.Research Institute of Forestry/Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, CAF,Beijing 100091, China; 3. Dalaoling Forestry Farm of Yichang City, Hubei Province ,Yichang 443111, China |
| Abstract: | Based on the experimental forest of 5 kinds density set up during Eighth Five-year-plan period,the influence of initial density on Larix kaempferi growth and economic performance was studied.The results showed that mean DBH,height,tree volume and crown width decreased with initial density and standing stock and under branch height increased with initial density.So did NPV,BCR and IRR.The initial density had no significant effect on the growth of Larix kaempferi,except 15-year-old standing stock.The suggested initial density for short rotation pulpwood plantation of Larix kaempferi in northern sub-tropical alpine area was 4 050 trees/hm2 or 3 333 trees/hm2. |
| Keywords: | Larix kaempferi initial density pulpwood plantation growth economic benefits |
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