| 山杨、桦树地径与直径相关关系的研究 |
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| 引用本文： | 赵海珍,郑辉,陈东来,孟庆潭. 山杨、桦树地径与直径相关关系的研究[J]. 河北林果研究, 2001, 16(1): 14-16 |
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| 作者姓名： | 赵海珍 郑辉 陈东来 孟庆潭 |
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| 作者单位： | 1. 河北农业大学林学院，保定 071000
2. 唐山市林业局，唐山 063000 |
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| 摘 要： | 利用 10块山杨、桦树 (简称杨桦 )天然混交次生林标准地的实测资料 ,对两树种地径与直径的关系进行了研究 ,并建立了相应的线性模型 ,其相关系数均在 0 99以上 ,拟合效果良好 ,为林业科研和生产提供了可靠的依据
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| 关 键 词： | 山杨 桦树 地径 相关关系 |
| 文章编号： | 1007-4961(2001)01-0014-03 |
RELATIONSHIP BETWEEN DIAMETER AND DIAMETER AT BUTT END OF Populus davidiana AND Betulu platyphylla |
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| ZHAO Haizhen ,ZHENG Hui ,CHEN Donglai ,MENG Qingtan. RELATIONSHIP BETWEEN DIAMETER AND DIAMETER AT BUTT END OF Populus davidiana AND Betulu platyphylla[J]. Hebei Journal of Forestry and Orchard Research, 2001, 16(1): 14-16 |
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| Authors: | ZHAO Haizhen ZHENG Hui CHEN Donglai MENG Qingtan |
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| Affiliation: | ZHAO Haizhen 1,ZHENG Hui 1,CHEN Donglai 1,MENG Qingtan 2 |
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| Abstract: | The relationship of diameter and diameter at butt end was studied with the data of ten plots of Populus davidiana-Betulu platyphylla secondary mixed forests.It could be characterized by a linear model, y=a bx. All correlation-coefficient were above 0 99.The results provided references for research and production. |
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| Keywords: | Popalus davidiana Betulu platyphylla diameter at butt end correlation-coefficient. |
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