羊绒形态结构的相关性

Study on correlation among cashmere morphological structures

为给羊绒选择和质量鉴定工作提供更多的理论参考,采用光学显微镜对阿里地区羊绒的直径、鳞片高度和环状鳞片占有率形态结构特征进行测试,绘制出羊绒直径-鳞片高度、羊绒直径-环状鳞片占有率以及鳞片高度-环状鳞片占有率的分布图,采用最小二乘法确定最佳拟合直线,计算了形态结构之间的相关系数,发现羊绒直径与鳞片高度有较大的正相关,环状鳞片占有率分别与羊绒直径和鳞片高度呈现较小的负相关。用阿拉善和盖县的羊绒测试结果验证了其的相关性,上面3个地区的羊绒直径与鳞片高度的相关系数平均值为0.541 4,环状鳞片占有率与羊绒直径和鳞片高度的相关系数平均值分别为-0.228 8和-0.217 0。

The cashmere morphological structure including the cashmere diameter,the scale height and the percent of the scale ring are measured with an optics microscope for the cashmere in Ali area. The distributions for the cashmere diameter with the scale height,the cashmere diameter with the percent of scale ring and the cashmere scale height with the percent of scale ring are showed,respectively. The proper linear fittings are determined by the least squares method and the correlation coefficients are also computed among cashmere morphological structures. It shows that there is a larger positive correlation between the cashmere diameter and the scale height while the correlations between the percent of scale ring with the cashmere diameter and the scale height are smaller negative respectively. The similar correlations among cashmere morphological structures are also found in the cashmere from Alashan and Gaixian areas,respectively. The average correlation coefficient between the cashmere diameter and the scale height is 0. 541 4,the average correlation coefficients between the percent of scale ring and the cashmere diameter and the scale height are- 0. 228 8 and- 0. 217 0,respectively,from above three areas.