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| 基于多重分形理论的农田土壤特性空间变异性分析 | |
| 引用本文： | 管孝艳,杨培岭,吕烨.基于多重分形理论的农田土壤特性空间变异性分析[J].应用基础与工程科学学报,2011,19(5):712-720. |
| 作者姓名： | 管孝艳 杨培岭 吕烨 |
| 作者单位： | 1. 中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京100038;中国农业大学水利与土木工程学院,北京100083;国家节水灌溉北京工程技术研究中心,北京100048 2. 中国农业大学水利与土木工程学院,北京,100083 3. 中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京,100038 |
| 基金项目： | 国家高技术发展研究计划(863计划)项目，水利部公益项目，国家自然科学基金 |
| 摘 要： | 土壤性质是影响土壤水分运动和溶质迁移的重要因素,土壤特性的空间变异性研究对于农田土壤质量管理具有重要意义.为定量研究土壤特性空间变异性的复杂程度,本文以再生水灌区农田土壤为研究对象,应用分形和多重分形理论定量分析了农田土壤颗粒含量、土壤容重、饱和含水量、孔隙度等土壤特性的空间变异性.结果表明:土壤容重、孔隙度的分形维数D较大,其空间分布具有较大的随机性,即空间分布的均匀性较好;土壤特性的空间分布具备多重分形特征,多重分形谱的谱宽Δα可以定量表征土壤属性空间分布的不规则特征,饱和含水量的多重分形谱谱宽Δα最大,其空间分布的不规则形最大;大值数据对于砂粒、容重和饱和含水量空间变异性的贡献率较大.因此,多重分形参数可以作为定量反映土壤特性空间变异性的潜在指标. |
| 关 键 词： | 再生水灌区 土壤物理特性 空间变异 多重分形 |
Analysis on Spatial Variability of Soil Properties Based on Multifractal Theory |
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| GUAN Xiaoyan,YANG Peiling,LV Ye.Analysis on Spatial Variability of Soil Properties Based on Multifractal Theory[J].Journal of Basic Science and Engineering,2011,19(5):712-720. | |
| Authors: | GUAN Xiaoyan YANG Peiling LV Ye |
| Institution: | GUAN Xiaoyan1,2,3,YANG Peiling2,LV Ye1 (1.State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,China Insitute of Water Resources and Hydropower Research,Beijing 100038,China,2.College of Water Conservancy & Civil Engineering,China Agricultural University,Beijing 100083,3.National Center of Efficient Irrigation Engineering and Technology Research-Beijing,Beijing 100048,China) |
| Abstract: | Soil properties are the important factors that affect soil water movement and solute migration,therefore the study on spatial variability of soil properties is of great significance for soil quality management.In order to quantitative study the complexity of spatial variability of soil properties.In this paper,the fractal and multifractal theory were apphed to quantitatively analyze the spatial variability of soil properties such as soil particle content,soil bulk density,saturated water content and soil po... |
| Keywords: | reclaimed water irrigation area soil physical property spatial variability multifractal |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |