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| 木麻黄木材密度与力学性质株内变异的研究 | |
| 引用本文： | 林金国,林春池,林秀芳,方柏州.木麻黄木材密度与力学性质株内变异的研究[J].福建林学院学报,1999,19(2):167-169. |
| 作者姓名： | 林金国 林春池 林秀芳 方柏州 |
| 作者单位： | 1. 福建林学院林产工业系,福建南平353001 2. 莆田县林业局,福建莆田,351100 3. 云霄县林业局,福建云霄,363300 |
| 基金项目： | 福建省教育委员会科学基金 |
| 摘 要： | 对１６株采自福建莆田的木麻黄株内不同高度、圆周不同方位木材密度及其径向变异和力学性质的测定与分析，结果表明：木材基本密度、抗弯强度、抗弯弹性模量、冲击韧性在株内不同高度上差异极端显著，顺纹抗压强度差异显著；在圆周不同方位上，４项力学性质和基本密度均为南北向高于东西向，冲击韧性、抗弯强度、抗弯弹性模量在圆周不同方位上差异显著，基本密度和顺纹抗压强度未表现显著差异．株内不同高度对木材密度和力学性质的影响大于圆周不同方位．在株内不同高度径向上，木材密度自外到内均逐渐减小，变化趋势大致相同 |
| 关 键 词： | 木麻黄 木材密度 力学性质 株内变异 |
Variation of Wood Density and Mechanic Properties within Trees of Casuarina equisetifolia |
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| Lin Jinguo,Lin Chuanchi,Lin Xiufang,Fang Baizhou.Variation of Wood Density and Mechanic Properties within Trees of Casuarina equisetifolia[J].Journal of Fujian College of Forestry,1999,19(2):167-169. | |
| Authors: | Lin Jinguo Lin Chuanchi Lin Xiufang Fang Baizhou |
| Abstract: | Wood density and its radial variation,MOR, MOE, crashing strength and impact strength in different heights and four cardinal sides within 16 Casuarina equisetifolia trees collected from Putian city Fujian province were determined and analyzed There were extremely significant differences in wood basic density, MOR, MOE and impact strength but significant ones in crashing strength in different heights The mechanical properties and wood density in northern and southern sides were higher than those in eastern and western sides There were significant differences in impact strength, MOR, MOE but no significant ones in wood density and crashing strength in different cardinal sides Heights affected more significantly than cardinal sides within trees on wood density and mechanical properties Wood densities all became small from exterior to interior in radius from different heights within trees, meanwhile, its change tendencies among different heights were similar |
| Keywords: | Casuarina equisetifolia wood density mechanical properties variation within trees |
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