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对银杏（ Ｇｉｎｋｇｏ ｂｉｌｏｂａ）Ｘ射线木材密度曲线分形分析，结果表明．银杏木材密度的分形维数约在１．４４３０。分形维数直观地反映了木材密度年轮内和年轮间的变化规律、与年轮宽度有一定的联系、与木材密度本身关系不大。木材密度的分形维数一般由遗传因素控制．不同树种木材分形维数是相对固定的。木质材料的分形研究、是揭示其内在规律的有效方法。
Fractal analysis of X - ray density curve of Ginkgo biloba showed that the results showed that Ginkgo wood density fractal dimension of about 1.4430. The fractal dimension intuitively reflects the variation of wood density between annual rings and annual rings, and has some relations with the width of the ring, but has little to do with the density of wood itself. The fractal dimension of wood density is generally controlled by genetic factors. Different species of wood fractal dimension is relatively fixed. Fractal research on woody materials is an effective way to reveal its inherent laws.