| 张季如,朱瑞赓,祝文化.用粒径的数量分布表征的土壤分形特征[J].水利学报,2004,35(4):0067-0071 |
| 用粒径的数量分布表征的土壤分形特征 |
| Fractal features of soils characterized by grain size distribution |
| |
| DOI： |
| 中文关键词: 土壤 粒径分布 分形 分维数 图像分析 |
| 英文关键词: soil diameter distribution fractal dimension image analysis |
| 基金项目: |
|
| 摘要点击次数: 3295 |
| 全文下载次数: 442 |
| 中文摘要: |
| 应用计算机图像分析技术，对6个典型土样测定土壤颗粒的等效直径和分布规律，给出用粒径的数量分布表征的土壤分形维数。结果表明：土壤颗粒的粒径分布具有一定的统计分形特征，分维数的数值反映了粒径大小和分布的均匀程度。分维数愈大，土壤颗粒的粒径愈小，细粒含量愈高，质地愈不均匀；土壤颗粒在单一粒级分布的集中程度对分维数的数值有重要影响，单一粒级的颗粒含量愈高，分维数愈大。计算机图像分析技术为土壤的分形研究提供了一种精确、简便的实验和分析方法。 |
| 英文摘要: |
| The technology of image analysis is applied to measure the equivalent diameter and grain size distribution of six soil samples. The fractal dimension characterized by grain size distribution is obtained accordingly. The analysis shows that the grain size distribution of soils exhibits a statistical fractal feature and the magnitude of fractal dimension reflects the sizes and uniformity of soil particles. Large fractal dimension corresponds to small size grain, high percentage of fine particles and poor uniformity. The uneven distribution of particle sizes will remarkably influence the magnitude of fractal dimension. The fractal dimension will be very large if the sizes of soil particles are concentrated in a narrow range. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |