| 马占相思人工实生林立木干形研究 |
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| 引用本文： | 陆道调,吴保国,秦武明,戴军.马占相思人工实生林立木干形研究[J].中南林业科技大学学报,2005,25(2):21-24. |
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| 作者姓名： | 陆道调 吴保国 秦武明 戴军 |
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| 作者单位： | 北京林业大学 北京100083广西大学林学院广西南宁530004
(陆道调)，北京林业大学 北京100083
(吴保国)，广西大学林学院 广西南宁530004
(秦武明)，广西国有高峰林场 广西南宁530001(戴军) |
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| 摘 要： | 为掌握马占相思人工林立木干形变化的规律性,实测431株样木并采用多个干形指标进行了比较研究.结果表明:实验形数变动系数最小,其变动系数为8.55%;实验形数的调查平均值0.386 8,比目前区内使用的阔叶树数值(0.400 0)呈一定的偏小;正形数系列中,以1/4树高以下变动系数较小,2/10、1/10树高处形数及胸高形数的变动系数分别是8.69%、10.63%、和9.68%;胸高形数、胸高形率以及树高间呈双曲线关系,相关关系紧密.
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| 关 键 词： | 森林经理 马占相思 正形数 实验形数 正形数 广西 |
| 文章编号： | 1000-2502(2004)04-0021-04 |
| 修稿时间： | 2004年12月7日 |
A Research on the Stem Form of Acacia mangium Seedling Plantation |
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| LU Dao-diao,WU Bao-guo,QIN Wu-ming,DAI Jun.A Research on the Stem Form of Acacia mangium Seedling Plantation[J].Journal of Central South Forestry University,2005,25(2):21-24. |
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| Authors: | LU Dao-diao WU Bao-guo QIN Wu-ming DAI Jun |
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| Abstract: | Based on 431 Acacia mangium plantation felled sample trees, a few stem form factors have been calculated and compared with each other in order to find out the tree stem form regularity. The results are as follows: The coefficient of alteration in experiment form factor is minimum and most steady, its value is 8.55%. The value of experiment form factor averages 0.386 8, which is slightly smaller than the broadleaved tree mean number (0.400 0 ) used in the district at present. The C.A of normal form factor blow 1/4 tree height is relatively less than that of the over-stem position, and the mean number is 8.69%, 10.63%, and (9.68%) respectively for 2/10, 1/10 relative tree height and the breast height. The relationship between breast height form factor, breast height form quotient, and tree height can be significantly expressed as quadratic correlation curve form. |
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| Keywords: | forest mangeement Acacia mangium normal form factor experimental form factor normal form quotient Guangxi |
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