| 红松阔叶人工天然混交林主要树种胸径与冠幅的相关分析 |
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| 引用本文： | 邓宝忠,王素玲,李庆君.红松阔叶人工天然混交林主要树种胸径与冠幅的相关分析[J].防护林科技,2003(4):19-20,34. |
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| 作者姓名： | 邓宝忠 王素玲 李庆君 |
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| 作者单位： | 1. 齐齐哈尔林业学校,黑龙江,齐齐哈尔,161000
2. 黑龙江省鹤岗市林业局 |
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| 摘 要： | 在红松阔叶人工天然混交林中,红松胸径与冠幅的关系可用函数ω=a+bD来拟合,相关紧密,且在不同林分类型内存在一致性;其他阔叶树种胸径与冠幅的关系同样可用ω=a+bD拟合,相关系数均在0.96以上。建立了各树种胸径、冠幅关系的数学模型。利用这些数学模型即可根据胸径估算冠幅,并结合郁闭度公式P= niwi/s确定出是否对林分采取抚育间伐措施。确定间伐后,即可按公式N=P×104W·B计算各树种的间伐保留株数,从而,为科学经营红松阔叶人工天然混交林提供依据。
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| 关 键 词： | 红松阔叶人工天然混交林 胸径 冠幅 相关分析 抚育间伐 |
| 文章编号： | 1005-5215(2003)04-0019-02 |
CORRELATION ANALYSIS OF BREAST DIAMETER AND CROWN WIDTH IN ARTIFICIAL AND NATURAL FORESTS MIXED BY KOREAN PINE AND BROADLEAVED TREES |
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| Abstract: | In artificial and natural forests mixed by Korean pine and broadleaved trees,the relation between breast diameter and crown width can be fit with formula ω=a+bD;The relation between breast diameter and crown width of broadleaved can also be fit with formula ω=a+bD,and the correlation coefficient is above 0.96.So can be built math models for relation between bD and CW of different species.Using these formulas can be estimated crown width,With crown density formula P=niwi/s were determined measures for intermediate cutting.By means of formula N=P×10W·B can be evaluated pland numbers to be reserved. |
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| Keywords: | Korean pine broadleaved tree mixed forest breast diameter crown width correlation analysis tending and intermidiate cutting |
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