| 四川桤木林分各主要生长因子间相关性研究 |
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| 引用本文： | 郑传英.四川桤木林分各主要生长因子间相关性研究[J].安徽农学通报,2010,16(17):161-162. |
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| 作者姓名： | 郑传英 |
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| 作者单位： | 龙岩长汀县林业局,福建长汀,366300 |
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| 摘 要： | 通过对林分各主要生长因子（树高、胸径、材积）进行回归分析,树高与胸径之间存在着正相关关系,树高随着直径的增大而增大,且随着直径的增大其树高的变动系数逐渐减小,胸径与材积存在着一元二次关系,并得出胸径与树高,胸径与材积之间关系的最佳回归方程。
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| 关 键 词： | 四川桤木 胸径 树高 材积 回归分析 |
Analysis on the relationship among the main growth factor of A1nus cremastogyne Burkill |
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| Zheng Chuanying.Analysis on the relationship among the main growth factor of A1nus cremastogyne Burkill[J].Auhui Agricultural Science Bulletin,2010,16(17):161-162. |
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| Authors: | Zheng Chuanying |
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| Institution: | Zheng Chuanying (Bureau of Forestry of Changting County;Changting 366300,China) |
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| Abstract: | The regression analysis of all the major growth factor（tree height and diameter,volume of timber） showed that there had positive relationship between tree height and diameter,and tree height got higher with the increase of diameter,however,the tree high coefficient of variation got smaller with the increase of diameter.The relationship of tree diameter at chest height and volume of timber matched the equation： y=aX2＋bX＋c.And the best regression equation of the relationships between tree diameter at chest height and tree height,and between tree diameter at chest height and volume of timber was concluded. |
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| Keywords: | Alnus cremastogyne Burkill diameter tree-height volume of timber regression equation |
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