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| 应用分形维数研究土壤团聚体与低吸力段持水性的关系 | |
| 引用本文： | 张保华,刘子亭,何毓蓉,董杰.应用分形维数研究土壤团聚体与低吸力段持水性的关系[J].土壤通报,2006,37(5):857-860. |
| 作者姓名： | 张保华 刘子亭 何毓蓉 董杰 |
| 作者单位： | 1. 聊城大学,环境与规划学院,山东,聊城,252059;聊城大学,黄河下游水土资源研究所,山东,聊城,252059 2. 聊城大学,黄河下游水土资源研究所,山东,聊城,252059 3. 中科院,成都山地灾害与环境研究所,四川,成都,610041 |
| 基金项目： | 中国科学院知识创新工程项目;山东省优秀中青年科学家科研奖励基金 |
| 摘 要： | 将土壤水动力参数和易测定的土壤物理特性联系起来一直是土壤物理学的重要研究内容,分形理论为这方面研究提供了新的途径。本文以贡嘎山亚高山林区11个土壤样品为例,研究了土壤团聚体分形维数和低吸力段持水曲线分形维数的关系。结果表明:分形维数能较好地描述土壤团聚体数量组成、土壤水分分配;干、湿团聚体分形维数(CFD、WFD)与低吸力段持水曲线分形维数(FDw)之间相关系数为0.891、0.759,呈极显著性直线正相关,线性回归方程式定量地描述了研究区森林土壤团聚体对土壤低吸力段持水性能的影响。 |
| 关 键 词： | 土壤团聚体 低吸力段持水曲线 分形维数 贡嘎山 |
| 文章编号： | 0564-3945(2006)05-0857-04 |
| 修稿时间： | 2005年8月14日 |
Relationship between Soil Aggregates and Water Content within Low Suctions Studied by Using the Fractal Dimension |
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| ZHANG Bao-hua,LIU Zi-ting,HE Yurong,DONG Jie.Relationship between Soil Aggregates and Water Content within Low Suctions Studied by Using the Fractal Dimension[J].Chinese Journal of Soil Science,2006,37(5):857-860. | |
| Authors: | ZHANG Bao-hua LIU Zi-ting HE Yurong DONG Jie |
| Abstract: | It is importan to relate soil water dynamic parameters and easily determined soil physical characteristics.Fractal theory provides a new approach for the study above.The relationship between fractal demension and soil aggregates al low suction was studied by using 11 soil spmples under sub-alpine forests of the Gongga mountain.The results showed that: fractal dimension well characterized the composition of soil aggregates and water distribution within low suctions;the correlation coefficients between dry / wet aggregates fractal dimensions(CFD,WFD) and the fractal dimensions of soil water holding curve within low suctions were 0.891 and 0.759 respectively(P<0.01) and the linear regression equations quantificationally described the influence of forest soil aggregates on soil water holding. |
| Keywords: | Soil aggregates Soil water holding curve within low suction Fractal dimension Gongga Mountain |
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