| 培育措施对人工林樟子松木材力学性质的影响 |
| |
| 引用本文： | 郭明辉,陈广胜,王金满,赵西平.培育措施对人工林樟子松木材力学性质的影响[J].林业研究,2006,17(2):157-159. |
| |
| 作者姓名： | 郭明辉 陈广胜 王金满 赵西平 |
| |
| 作者单位： | 东北林业大学 哈尔滨150040 |
| |
| 基金项目： | This study was supported by National Natural Science Foundation of China （30471355） and the Key Technologies R＆D Program of Heilongjiang Province （G99B5-3）. |
| |
| 摘 要： | 研究了不同培育措施(初植密度、间伐强度、坡向、坡位)对人工林樟子松(Pinus sylvestris var.mongolica)木材的密度和力学性质(横纹抗弯强度、抗弯弹性模量、顺纹抗压强度、冲击韧性、端面硬度)的影响。初植密度(1.5m×1.0m,1.5m×2.0m和1.5m×2.5m)对木材密度和抗弯弹性模量有显著的影响。初植密度为1.5m×1.0m时,木材主要力学指标值最大。适当间伐可提高木材的抗弯弹性模量和顺纹抗压强度,但重度间伐则会降低木材的力学强度。坡向(阳坡和阴坡)对木材的抗弯弹性模量影响显著,阳坡高于阴坡。坡位(上坡位和下坡位)对除端面硬度外的木材力学性质指标影响都显著,各项力学指标值均是坡下高于坡上。表5参9。
|
| 关 键 词： | 培育措施 人工林 樟子松 力学性质 |
| 文章编号： | 1007-662X（2006）02-0157-03 |
| 收稿时间： | 2004-12-03 |
| 修稿时间： | 2005-05-21 |
Effects of silviculatural treatments on mechanical properties of Pinus sylvestris var. mongolica plantations |
| |
| Ming-hui Guo,Guang-sheng Chen,Jin-man Wang,Xi-ping Zhao.Effects of silviculatural treatments on mechanical properties of Pinus sylvestris var. mongolica plantations[J].Journal of Forestry Research,2006,17(2):157-159. |
| |
| Authors: | Ming-hui Guo Guang-sheng Chen Jin-man Wang Xi-ping Zhao |
| |
| Institution: | (1) Material Science and Engineering College, Northeast Forestry University, Harbin, 150040, P.R. China |
| |
| Abstract: | A study was conducted to determine the influences of initial planting densities, thinning intensities, exposures and slope
sites on physical property (wood density) and mechanical properties such as modulus of elasticity (MOE), bending strength,
impact strength, compression strength along grain and hardness) of Pinus sylvestris var. mongolica plantation in Mao’ershan Forest Farm, Northeast China. Results show that the different initial planting densities (1.5 m×1.0
m, 1.5 m×2.0 m and 1.5 m×2.5 m) had significant effects on wood density and MOE, and the highest mean wood density and indexes
of mechanical properties occurred in the stand with an initial planting density of 1.5 m×1.0 m. The indexes of mechanical
properties such as hardness of end, bending strength, MOE and compression strength along grain of wood increased after mild
thinning, but decreased after violent thinning. The exposures (sunny slope and shady slope) had a significant effect on MOE,
and the highest mean MOE occurred on sunny slope. The slope sites (upper site and lower site) had a significant effect on
wood density and main mechanical properties, except hardness. The highest mean wood density and mechanical properties occurred
at lower site.
Biography: GUO Ming-hui (1964–), female, Ph.D., professor, Material Science and Engineering College, Northeast Forestry University,
Harbin 150040, P. R. China. |
| |
| Keywords: | Silvicultural treatments Plantation Pinus sylvestris var mongolica Mechanical properties |
| 本文献已被 CNKI 万方数据 SpringerLink 等数据库收录！ |
|
