摘要
比较分析了湿地松人工林材性在不同地带和地形中的表现差异.结果表明:相同地形条件下生长在南亚热带的湿地松人工林木材密度、顺纹抗压强度、抗弯强度、抗弯弹性模量、硝酸—乙醇纤维素含量、戊聚糖含量和苯醇抽出物含量大于生长在中亚热带的,而木材尺寸稳定性和Klason木素含量小于生长在中亚热带的.相同地带内山谷中的湿地松人工林木材尺寸稳定性和戊聚糖含量大于山脊上的,木材密度、顺纹抗压强度、抗弯强度、抗弯弹性模量、硝酸—乙醇纤维素含量、Klason木素含量和苯醇抽出物含量均小于山脊上的.差异显著性t检验表明:地带和地形对湿地松人工林木材密度、顺纹抗压强度和抗弯强度影响极显著或显著;地形对湿地松人工林木材差异干缩和抗弯弹性模量影响极显著,地带对湿地松人工林木材差异干缩和抗弯弹性模量影响不显著.研究结果为湿地松人工林培育和木材合理利用提供科学依据.
Phenotype difference of wood properties of Slash pine plantation in different regions and different terrains were analyzed comparatively.The results showed that under the same terrain conditions the density,compression strength parallel to grain,bending strength,elastic modulus of bending,nitric acid-alcohol cellulose content,pentosan content and benzene-alcohol extractive content of Slash pine wood from plantation growing in southern subtropics were bigger than that in middle subtropics,while size stability and klason lignin content of the formerwere smaller than that of the latter. In the same regions,size stability and pentosan content of Slash pine wood from plantation growing in the valley were bigger than that on the ridge,while density,compression strength parallel to grain,bending strength,elastic modulus of bending,nitric acid-alcohol cellulose content,klason lignin content and benzene-alcohol extractive content of the former valley were smaller than that of the latter. Different significanse t test showed that region and terrain affected extremely significantly or significantly density,compression strength parallel to grain and bending strength of Slash pine wood from plantation. Terrains influenced extremely significantly elastic modulus of bending and ratio of tangential shrinkage to radial shrinkage,while regions affected not significantly them. The results provide scientific basis for plantation cultivation of Slash pine forest stand and rational utilization of Slash pine wood .
出处
《福建林学院学报》
CSCD
北大核心
2005年第3期238-242,共5页
Journal of Fujian College of Forestry
基金
福建省自然科学基金资助项目(B0110024).
关键词
地带
地形
湿地松
人工林
材性
影响
regions
terrains
Pinus elliottii
plantation
wood properties
effect
