知识与财富的链接
通过对四川省宜宾地区23个耕层土样的颗粒组成分析,分别应用AR法和杨培岭法计算了不同质地的颗粒的分形维数,其结果是砂壤土、轻壤土、中壤土、重壤土和粘土分形维数的平均值依次递增。回归相关分析表明土粒分形维数与粒径005~100mm颗粒含量关系显著负相关,与0.01~0.05mm和0.005~0.01mm颗粒含量关系不显著,与0.001~0.005mm和小于0.001mm颗粒(粘粒)含量呈极显著正相关;它们与有机质呈显著正相关,与土壤容重呈极显著负相关。分形维数可作为土壤质地的综合性的定量化指标。
The Alexandra K. & Renduo Z.' and Yang' methods were applied to calculate fractal dimensions of particle based on the analysis of soil particle contents in the hill area of YiBin, Sichuan Province. The results demonstrate that the dimensions increase successively from sand loamy soil, light loamy soil, mediate loamy soil, heavy loamy soil to clay soil. Simple correlation analysis indicates that the fractal dimensions are very significantly negative correlative with the contents of 0.05~1.00 mm particle, not obviously relative with the contents of 0.01~0.05 mm and 0.005~0.01 mm particles, but in very significant correlation with the contents of 0.005~0.001 mm and <0.001 mm particles. In addition, the fractal dimensions of particle are positivly relative with the content of organic matter, and significantly negative relative with the bulk density. The fractal dimensions of particle can been used as a quantitative index of soil texture.
