| 油松针叶叶量的研究 |
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| 引用本文： | 浊秀军,马占山.油松针叶叶量的研究[J].林业科学,1990,26(2):101-109. |
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| 作者姓名： | 浊秀军 马占山 |
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| 作者单位： | 河北省林业科学研究所，河北省林业科学研究所，北京林业大学 |
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| 摘 要： | 对油松针叶的年龄结构、针叶量在树冠各轮枝中的分布、针叶叶量与树高、材积生长量的关系,以及修枝对针叶叶量和油松生长量的影响进行了研究,同时应用逐步回归分析方法,在树高、胸径、地径、树龄、冠幅、冠长、冠高比、轮枝数、松枝数、松枝总长度、树高生长量等11个因子中,筛选出与油松针叶叶量关系较密切的树高、胸径、冠幅、冠长、冠高比、松枝数、松枝总长度等7个因子,求出了估测油松针叶叶量的最优回归估测模型,并在林间对此模型进行了估测检验。
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| 关 键 词： | 油松 针叶叶量 逐步回归模型 |
STUDIES ON THE NEEDLE BIOMASS OF PINUS TABULAEFORMIS |
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| Wen Xiujun Wang Zhenliang.STUDIES ON THE NEEDLE BIOMASS OF PINUS TABULAEFORMIS[J].Scientia Silvae Sinicae,1990,26(2):101-109. |
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| Authors: | Wen Xiujun Wang Zhenliang |
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| Institution: | Wen Xiujun Wang Zhenliang (Hebei Forestry Research Institute) Ma Zhanshan (Beijing Forestry University) |
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| Abstract: | The structure of leaf age, distribution of needle biomass in various ring branches of crowns, and the relations between needle biomass and tree heights, and timber volume increments, as well as the effects of pruning on needle biomass and growth increments in P. tabulaeformis have been studied in this paper. Seven factors related to needle biomass, namely tree height, DBH, crown length, crown size, crown/height, numbers and total length of branches, have been selected from 11 lectors by gradual regression analysis method. The best regression assessment model for needle biomass of P. tabulaeformis has been worked out and tested in the forest land of P. tabulaeformis. |
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| Keywords: | Pinus tabulaeformis Needle biomass Gradual regression analysis model |
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