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林业资源管理 ›› 2008, Vol. 0 ›› Issue (5): 79-85.doi: 10.13466/j.cnki.lyzygl.2008.05.011

• 科学技术 • 上一篇    下一篇

黑龙江东部地区落叶松人工林节子大小的研究

姜生伟1,2, 贾炜玮1   

  1. 1.东北林业大学,哈尔滨 150040;
    2.辽宁省林业厅,沈阳 110001
  • 收稿日期:2008-09-08 修回日期:2008-10-06 出版日期:2008-10-28 发布日期:2020-12-08
  • 通讯作者: 贾炜玮(1978-),男,山东淄博市人,博士,主要从事林分生长与收获模型方面的研究工作。Email: jiaww2002@163.com
  • 作者简介:姜生伟(1976-),男,辽宁桓仁县人,高级工程师,主要从事森林资源经营管理方面的研究工作。
  • 基金资助:
    “十一五”支撑计划课题 “落叶松大径材良种选育及定向培育技术”(2006BAD24B06)

Study on Knot Size of Larix olgensis Hengy in Plantation in Eastern Area of Heilongjiang Province

JIANG Shengwei1,2, JIA Weiwei1   

  1. 1. Northeast Forestry University, Harbin 150040, China;
    2. Liaoning Provincial Forestry Department, Shenyang 110161, China
  • Received:2008-09-08 Revised:2008-10-06 Online:2008-10-28 Published:2020-12-08

摘要: 以不同年龄、不同密度、不同立地条件的落叶松人工林作为研究对象,基于10块标准地中50株样木所获得的死枝和节子大小数据,利用数据统计分析模型和模拟技术,分析并研究了节子大小在树干上的分布规律,并构建了节子大小的预测模型。研究结果表明:1)节子直径随着节子着生高度的增加而持续增加,在树冠基部达到一渐进值,可用Mitscherlich方程对节子直径进行预测;2)在树高约40%处以下的健全节长度随着节子着生位置的增加而逐渐增加,然后再向上有减小的趋势;3)疏松节随着胸径的增大而增大,随着节子着生角度的增大而减小。

关键词: 落叶松, 人工林, 节子直径, 健全节长度, 疏松节长度

Abstract: This study was performed by using dead branches and knot size analysis data of 50 sample trees in 10 sample plots for Larix olgensis Hengy plantations with different ages, different stand density and different sites. The data statistical analysis and matrixes and simulating technique are uses for analyzing and studying the distribution of the knot size along the stem. The models of predicting knot size were established. The results indicate: (1) the knot diameter increases with the knot height and reaches limit value at the tree crown base. The knot diameter can be described with Mitscherlich equation. (2) below 40% of the tree, the sound knot length increases along with the height of living locations of the knot, then the trend tends to decrease.(3) the loose knot length increases with the increasing of tree diameter at breast height and decreases with the increasing of knot angle.

Key words: Larix olgensis Hengy, plantation, knot diameter, sound knot length, loose knot length

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