论文部分内容阅读
在总结国内外木材年轮细胞几何尺寸计算理论的基础上,研究木材年轮间相关参数与细胞断面形状数学关系的基础理论。通过细胞模型的几何尺寸定量计算细胞与年轮的相关参数,定性地解释木材生长变化的年轮间细胞变化的几何特征。由于绝大多数木材年轮的相关参数随细胞壁尺寸变化而改变,在微观观察年轮间的细胞几何尺寸变化可以定量地描述木材材性的变化。在宏观分析同一树种年轮的不同变化时,采用细胞尺寸差异比较,根据细胞模型形状计算出各树种和材种间尺寸和密度的不同,根据细胞密度显著的变化从微观解释木材强度的变化,将使我们从微观理论的高度来认识木材宏观性质的变化,为木材年轮细胞描述理论开创新的研究领域。
On the basis of summarizing the theory of calculating the annual growth of woody cells at home and abroad, the basic theory of mathematic relationship between the parameters of wood rings and the cross-section of the cells was studied. The geometric parameters of cells and annual rings were quantitatively calculated by the geometric size of the cell model to qualitatively explain the geometric characteristics of the changes in the growth of the wood between the annual rings. As most of the parameters of wood annual rings vary with the size of the cell wall, changes in the geometry of the cells during the microscopic observation of the rings can quantitatively characterize changes in wood properties. In the macroscopical analysis of different changes of the same tree ring, the differences of the size and density of each species and species were calculated according to the shape of the cell model. The changes of the intensity of the wood were explained microscopically according to the significant changes of the cell density. It will enable us to understand the change of macroscopic nature of wood from the perspective of microscopic theory and open up new research fields for woody ring cell description theory.