西南桦次生天然林应力木纤维形态分析  

Study on Fiber Morphology of Reaction Wood Grown in Secondary Forests of Natural Bethla alnoides

作　　者：聂梅凤[1] 邱坚[1] 王敏[2] 

机构地区：[1]西南林业大学木材科学与装饰工程学院,云南昆明650224 [2]中南林业科技大学材料科学与工程学院,湖南长沙410004

出　　处：《西南林学院学报》2011年第3期57-60,共4页Journal of Southwest Forestry College

基　　金：云南省自然科学基金重点项目(2006C007Z)资助;西南林业大学木材科学与技术省级重点学科建设项目(XKZ200903)资助

摘　　要：对西南桦次生天然林中应力木拉应力区和压应力区的纤维长度、纤维宽度、纤维壁厚和壁腔比等纤维形态特征进行测试。结果表明,拉应力区纤维长度大于压应力区,纤维宽度、壁厚、腔径比均小于压应力区,纤维形态差异较大;但拉应力区、压应力区纤维长度均较长,长宽比大于35,腔径比小于1,均属于造纸优等原料。The Key fiber morphological features including the fiber length, fiber width, cell wall thickness, ratio of length to width, and ratio of cell wall thickness to lumen diameter of reaction wood in secondary Bethla alnoides natural forest stands were determined and analyzed. The results showed that the fiber length of the tension wood was longer than that of the oppression wood, while the fiber width, cell wall thickness and the ratio of cell wall thickness to lumen diameter of the tension wood was smaller than those of the oppression wood. There were great differences in the fiber morphology between the two categories of wood. The fiber length in the two areas of re- action wood was longer, whose ratio of length to width was larger than 35 while the ratio of cell wall thickness to lu- men diameter was smaller than 1, indicating all of these categories of wood were superior for papermaking.

关 键 词：西南桦 应力木 纤维长度 纤维宽度 腔径比 

分 类 号：S781.1[农业科学—木材科学与技术]