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| 分形在土壤空间变异性评价中的应用研究 | |
| 引用本文： | 冉啟香,罗蔚,张翔,阿布力米提·买买提艾力. 分形在土壤空间变异性评价中的应用研究[J]. 中国农村水利水电, 2010, 0(7) |
| 作者姓名： | 冉啟香 罗蔚 张翔 阿布力米提·买买提艾力 |
| 作者单位： | 1. 武汉大学水资源与水电工程科学国家重点实验室,武汉,430072 2. 江西省水利规划设计院,南昌,330029 3. 新疆喀什水文水资源勘测局,新疆,喀什,844000 |
| 基金项目： | 国家自然科学基金重点项目资助(40730632) |
| 摘 要： | 针对土壤空间变异性问题,研究了分维数和土壤空间变异性的关系。应用Green-Ampt入渗模型模拟出十种土壤的下渗湿峰深度值,它们的大小依次是:壤质砂土、沙壤土、沙质黏壤土、壤土、粉砂壤土、砂质壤土、黏质壤土、粉砂黏壤土、黏土、粉砂黏土,然后计算出十种土壤随机组合构成的100种土壤剖面的湿峰形状分维数,用这些分维数来描述土壤空间变异性。同时用反距离加权法和相邻两参数平方均值法算出土壤区域属性值,并与分维数进行比较,再通过对土壤空间变异性(用土壤饱和水力传导度来表示)的统计分析和分维数关系的分析,得出湿峰的分形维数与KS具有较明显的分带关系,而且这种关系在实际流域中会更明显。总的来说,土壤空间变异性越大,分形维数df越大。因此可以看出,用分形来评价土壤空间变异性是可行的,并取得了不错的效果。 |
| 关 键 词： | 湿峰 分形分维 土壤空间变异性 |
Application of Multifractality to Evaluation of Soil Spatial Variability |
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| RAN Qi-xiang , LUO Wei , ZHANG Xiang , Abulimiti · Mamat Aili. Application of Multifractality to Evaluation of Soil Spatial Variability[J]. China Rural Water and Hydropower, 2010, 0(7) | |
| Authors: | RAN Qi-xiang LUO Wei ZHANG Xiang Abulimiti · Mamat Aili |
| Affiliation: | RAN Qi-xiang1,LUO Wei2,ZHANG Xiang1,Abulimiti·Mamat Aili3(1.State Key Laboratory of Water Resources and Hydropow er Engineering Science,Wuhan University,Wuhan 430072,China,2.Water Resources Planning and Design Institute,Nanchang,330029,3.Hydrology and Water Resources Survey Bureau,Kashi 844000,Xinjiang,China) |
| Abstract: | In order to solve some problems of soil spatial variability,the relation between the fractal dimension and soil spatial variability is studied.Modeling wetting front depth of ten kinds of soil applying Green-ampt infiltration model,and the sizes of them are followed by loamy sand,sandy loam,sandy clay loam,loam,silt loam,sandy clay loam,clay loam,silty clay loam and silty clay.The wetting front fractal dimension of 100 kinds of soil composition are calculated.Soil spitial variability is described by using t... |
| Keywords: | wetting front fractal and fractal dimension soil spatial variability |
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