| 花岗岩崩岗崩积体颗粒组成及分形特征 |
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| 引用本文： | 蒋芳市,黄炎和,林金石,赵淦,葛宏力.花岗岩崩岗崩积体颗粒组成及分形特征[J].水土保持研究,2014,21(6):175-180. |
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| 作者姓名： | 蒋芳市 黄炎和 林金石 赵淦 葛宏力 |
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| 作者单位： | 福建农林大学 资源与环境学院, 福州 350002 |
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| 摘 要： | 崩岗崩积体土质疏松，抗侵蚀能力弱，其颗粒组成及分形维数有其自身的特性。采用激光粒度分布仪对花岗岩崩岗崩积体及崩壁土样的颗粒进行测定，对其土壤颗粒组成及分形特征进行比较分析。结果如下:崩积体土壤以砾石、砂粒、粉粒含量为主，黏粒含量极低，土壤质地主要为砾石土；崩积体各层次土壤颗粒分形维数均值为2.61～2.70，分形维数值较低，反映了其细颗粒损失情况；黏粒含量是影响土壤颗粒分形维数的主要因素；崩壁土体的颗粒分形维数大小能够表征土壤的理化特征，而崩积体土壤颗粒分形维数无法真实反映崩积体的理化性质。
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| 关 键 词： | 崩岗 崩积体 颗粒分布 分形维数 |
Soil Particle Size Distribution and Fractal Dimensions of Colluvial Deposits in Granite Benggang |
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| JIANG Fang-shi,HUANG Yan-he,LIN Jin-shi,ZHAO Gan,GE Hong-li.Soil Particle Size Distribution and Fractal Dimensions of Colluvial Deposits in Granite Benggang[J].Research of Soil and Water Conservation,2014,21(6):175-180. |
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| Authors: | JIANG Fang-shi HUANG Yan-he LIN Jin-shi ZHAO Gan GE Hong-li |
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| Institution: | College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China |
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| Abstract: | Colluvial deposit, as a part of hill, has high contents of loose materials and high erodibility, and the particle composition and the fractal dimensions of colluvial soil have its own characteristics. Soil particle size distribution of colluvial deposits and clasping wall in granite hill were analyzed by using the laser article size distribution instrument. The results indicated that colluvial deposits were given priority with gravel, sand and silt contents, clay content was extremely low, the gravel soil was the dominated soil texture; the average fractal dimensions of soil particles of colluvial deposits were less than the range between 2.61 to 2.70, which reflected the characteristic of fine particle loss; clay content was the major factor of the fractal dimension; the fractal dimension could reflect the soil physical and chemical properties of collapsing wall, but it couldn’t reflect the soil properties of colluvial deposits. |
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| Keywords: | Benggang colluvial deposits soil particle size distribution fractal dimensions |
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