摘要
对山桂花人工林林木木材基本密度和纤维长度径向变异的研究表明 ,山桂花人工林林木的木材材积加权平均基本密度为 0 4 82 6g/cm3 ,低于山桂花天然林林木的木材基本密度 (0 5 30 0g/cm3 ) ;山桂花人工林林木木材纤维长度为 1182 4～ 15 96 4 μm ,材积加权平均值为 1375 4 5 μm ,低于山桂花天然林林木的木材纤维长度 (12 0 0～ 2 2 5 0 μm)。通过研究还得出了基本密度 (BD)、纤维长度 (FL)与生长轮 (年龄CA)和生长轮宽度(RW)。数学模型为FL =12 6 9 86 4 1+2 7 0 2 0 7CA - 5 4 4 4 3RW ;BD =0 4 782 - 0 0 0 2 4CA +0 0 0 2 9RW ,以此分析了木材性质与树木生长特性之间的关系 ,为速生用材林的培育提供依据。
The radial variation of wood density and fiber length of Paramichelia baillonii was studied. The results showed that the weighted average of wood basic density of Paramichelia baillonii in plantation was 0 482 6 g/cm 3 , which is lower than that of natural forest (0 530 0 g/cm 3 ). The weighted average of wood volume was 1 375 45 m. The weighted average of fiber length of was 1 182 4 ～ 1 596 4 m, which was lower than that of natural forest (1 200 ～ 2 250 m). The mathematic model of basic density, fiber length and cambium age and ring width was deduced as FL = 1 269 864 1 + 27 020 7 CA -5 444 3RW;BD=0 478 2-0 002 4 CA+0 002 9 RW. The analysis on the relationship between wood characteristics and growth, provided the cultivation and of rapid growing timber using plantation with a scientific basis.
出处
《云南林业科技》
2003年第2期72-75,共4页
Yunnan Forestry Science and Technology
基金
云南省重点科技攻关"现代林业资源培育产业化试验与示范"项目
项目编号云计科技 ( 98) 182
关键词
山桂花
人工林
林木
木材性质
生长特性
密度
纤维长度
Paramichelia baillonii
plantation
wood characteristics
growth characteristics
