| 论分形几何在土壤大孔隙研究中的应用 |
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| 引用本文： | 冯杰,张佳宝,朱安宁.论分形几何在土壤大孔隙研究中的应用[J].灌溉排水学报,2003,22(5):6-9. |
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| 作者姓名： | 冯杰 张佳宝 朱安宁 |
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| 作者单位： | 1. 中国科学院,南京土壤所,江苏,南京,210008;河海大学,水资源环境学院,江苏,南京,210098
2. 中国科学院,南京土壤所,江苏,南京,210008 |
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| 基金项目： | 国家重点基础研究发展项目(G1999011803)，中国科学院知识创新项目K2CX2-404，河海大学科技创新基金(2002409843) |
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| 摘 要： | 土壤大孔隙是普遍存在的现象,并非例外,它对水及溶质在土壤中的运移有着深刻影响。介绍了分形几何在确定土壤大孔隙分布中的应用。对含有各种大孔隙的南京原状土柱进行CT扫描实验,对CT扫描图像进行处理,得到大孔隙在土壤横断面的分布。指出南京土壤大孔隙的分布不具有分形结构,采用分形几何理论建立的描述土壤大孔隙大小分布的公式不具有普遍的适用性。
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| 关 键 词： | 大孔隙 分形几何 CT扫描 |
| 文章编号： | 1000-646X(2003)05-0006-04 |
| 修稿时间： | 2003年8月18日 |
Comment on Application of Fractal Geometry to the Study of Soil Macropores |
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| FENG Jie,ZHANG Jia-bao,ZHU An-ning
Institute of Soil Science,Chinese Academy of Sciences,Nanjing ,China, Colleague of Water Resources and Environment,Hohai University,Nanjing ,China.Comment on Application of Fractal Geometry to the Study of Soil Macropores[J].Journal of Irrigation and Drainage,2003,22(5):6-9. |
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| Authors: | FENG Jie ZHANG Jia-bao ZHU An-ning
Institute of Soil Science Chinese Academy of Sciences Nanjing China Colleague of Water Resources and Environment Hohai University Nanjing China |
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| Institution: | FENG Jie,ZHANG Jia-bao,ZHU An-ning
Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China, Colleague of Water Resources and Environment,Hohai University,Nanjing 210098,China |
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| Abstract: | Macropores in soil are general phenomena rather than the exception, they have greatly influence on the movement of water and solutes within soil. The application of fractal geometry to characterize the distribution of soil macropores is introduced. Nanjing Undisturbed soil core which has many macropores was scanned by CT, and cross-sectional distributions of the macroporoes were obtained. The results of this study indicated that the macropore distributions in Nanjing soil were not in line with the fractal structure and thus the fractal formula that describe the distribution of soil macropore are not universally applicable. |
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| Keywords: | macropores fractal geometry CT scanning |
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