| 塞罕坝林场主要树种一元立木地径材积表的编制 |
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| 引用本文： | 赵亚民. 塞罕坝林场主要树种一元立木地径材积表的编制[J]. 河北林果研究, 1993, 0(3) |
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| 作者姓名： | 赵亚民 |
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| 作者单位： | 塞罕坝机械林场 |
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| 摘 要： | 本文根据塞罕坝林场4个树种(樟子松、落叶松、白桦和山杨)的胸径、地径调查材料,利用胸径、地径之间存在的显著直线相关关系,分树种建立经验方程,求算出各径阶的胸径、地径对应值,通过一元立木材积式,导引出一元立木地径材积式(表)。
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| 关 键 词： | 地径 材积 一元立木地径材积表(式) |
MAKEUP OF SINGLE-ENTRY TREE VOLUME TABLES ACCORDING TO DIAMETER AT GRONUD FOR MAIN TREE SPECIES IN SAIHANBA TREE FARM |
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| Zhao Yamin. MAKEUP OF SINGLE-ENTRY TREE VOLUME TABLES ACCORDING TO DIAMETER AT GRONUD FOR MAIN TREE SPECIES IN SAIHANBA TREE FARM[J]. Hebei Journal of Forestry and Orchard Research, 1993, 0(3) |
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| Authors: | Zhao Yamin |
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| Affiliation: | Saihanba Tree Farm |
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| Abstract: | The survey data of 4 tree species (Pinus sylvestris Linn, var mongolica Litv. ,Larix principis - rupprechtii Mayr. ,Betula platyphylla Suks and Populus davidiana Dode on Sai-hanba tree farm demonstrated a significant linear corelation between diameter at breast height(DBH) and diameter at ground (DG). This was used as a basis to establish empirical e-quations for the species mentioned above. With the empirical equations , the correspondent values of DBH and DG in each diameter class were calculated. And then,the single -entry tree volume table according to diameter at ground was made by using the single -entry tree volume table. |
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| Keywords: | diameter at ground volume single -entry volume table |
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