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林业资源管理 ›› 2007, Vol. 0 ›› Issue (3): 94-97.

• 科学技术 • 上一篇    下一篇

尾巨桉萌芽更新不同密度处理对林分初期生长的影响

叶绍明1,2, 郑小贤1, 谢伟东2, 招礼军2, 梁宏温2   

  1. 1.北京林业大学省部共建森林培育与保护教育部重点实验室,北京 100083;
    2.广西大学林学院,广西 南宁 530004
  • 收稿日期:2007-01-20 修回日期:2007-04-17 出版日期:2007-06-28 发布日期:2020-12-01
  • 作者简介:叶绍明(1965-),男,广西德保人,副教授,博士生,主要研究方向为森林经营理论与技术。
  • 基金资助:
    “948”国家林业局引进项目(2005-4-03)

Influences of Eucalyptus urophylla × E.grandis Sprout Regeneration in Different Density Treatments on Primary Growth of Forest Stand

YE Shaoming1,2, ZHENG Xiaoxian1, XIE Weidong2, ZHAOLijun2, LIANG Hongwen2   

  1. 1. Key Laboratory for Silviculture and Conservation, Ministry of Education, Beijing Forestry University, Beijing 100083;
    2. Forestry College,Guangxi University,Nanning 530004, Guangxi, China
  • Received:2007-01-20 Revised:2007-04-17 Online:2007-06-28 Published:2020-12-01

摘要: 对尾巨桉不同处理更新3.2a生林分的生长调查,分析结果表明:在密度1 110株/hm2时,植苗更新林分平均胸径比萌芽更新林分高6.8%;平均单株材积比萌芽更新高11.4%;萌芽更新林分平均胸径随保留密度的增大而减小,方差分析结果表明不同处理尾巨桉林分胸径生长有极显著差异。萌芽更新林分平均单株材积随保留密度的增大而减小,萌芽保留1 110株/hm2平均单株材积比2 100株/hm2减小26.5%。在相同密度1 110株/hm2时,植苗更新林分每公顷蓄积比萌芽更新高23.1%。萌芽更新林分单位面积蓄积随密度的增大而增大,林分密度2 100株/hm2的林分每公顷蓄积量比密度1 110株/hm2高53.7%。

关键词: 人工林, 萌芽更新, 植苗更新, 尾巨桉

Abstract: The result of the growth survey about 3.2 year-old regeneration forest stand of Eucalyptus urophylla × E.grandis in different treatments showed that transplanting seedlings regeneration forest stand average breast diameter is 6.8% more than sprout regeneration's and the average single-tree volumeoftransplanting seedlings regeneration is 11.4% more than that of sprout regeneration. Sprout regeneation forest stand average breast diameter decreases with the increase of reserved density. In different density treatments, differencesin sprout regeneration forest stand average breast diameter of Eucalyptus urophylla × E.grandis are remarkable according to variance analysis. Sprout regeneration forest stand average single-tree volume decreases with the increase of reserved density. Sprout regeneration forest stand average single-tree volume inthe reserved density of 1110·hm-2 is 26.5% less than that in 2100·hm-2. In the same density of 1110·hm-2, transplanting seedlings regeneration forest stand volume per hectare is 23.1 % more than sprout regeneration's. Sprout regeneration forest stand volume per hectare increases with the increase of reserved density, and forest stand volume per hectare in forest stand density of 2100·hm-2 is 53.7% more than that in 1110·hm-2.

Key words: plantation forest, sprout regeneration, transplantingseedling regeneration, E.grandis×E.urophylla

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