| 土壤饱和水力传导度的空间变异性 |
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| 引用本文： | 陈明亮.土壤饱和水力传导度的空间变异性[J].华中农业大学学报,1986(4). |
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| 作者姓名： | 陈明亮 |
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| 作者单位： | 华中农业大学土壤农化系 |
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| 摘 要： | 土壤性质的空间变异性对于土壤改良和作物高产都是重要的。本文就土壤饱和水力传导度的空间变异性、孔性数值与饱和水力传导度的相关分析和用大孔隙度标定饱和水力传导度的空间变异性进行了研究。研究结果表明土壤饱和水力传导度的半方差图体现了该土性的空间结构;土壤饱和水力传导度主要通过大孔隙度来表征,二者的关系可以用直线函数和幂函数的关系式来表示;可以从大孔隙度的分布导出和表征饱和水力传导度标定因子的频率分布,作为他和水力传导度的空间分布的度量。
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| 关 键 词： | 土壤 水力传导度 空间变异性 标定 |
SPATIAL VARIABILITY OF SATURATED HYDRAULIC CONDUCTIVITY OF SOILS |
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| Chen Mingliang.SPATIAL VARIABILITY OF SATURATED HYDRAULIC CONDUCTIVITY OF SOILS[J].Journal of Huazhong Agricultural University,1986(4). |
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| Authors: | Chen Mingliang |
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| Institution: | Department of soil science and agrochemistry |
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| Abstract: | The spatial variability of soil properties is an important consideration for application of soil amendments and maximization of crop productivity. This Paper deals with the spatial variability of saturated hydraulic conductivity of soils,the relative analysis between the value of pore characterization and saturated hydraulic conductivity, and the spatial variability of saturated hydraulic conductivity to be characterized by macroporosity The results showed that the semivariogram of saturated hydraulic conductivity of soils expressed the spatial structure of this soil property; saturated hydraulic conductivity of soils can be characterized by macroporosity, the relations between saturated hydraulic conductivity and macroporosity may be expressed by the equations of linear function and power function; the distribution of macroporosity is used to derive and characterize frequency distribution of scaling factors of saturated hydraulic conductivity, as a spatial distribution measurement of saturated hydraulic conductivity |
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| Keywords: | Soil Hydraulic conductivity Spatial variability Scaling |
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