[1]邵明安.根据土壤水分再分布过程确定土壤的导水参数[J].水土保持研究,1985,(02):47-53.
Shao Mingan.DETERMINING HYDRAULIC PARAMETERS OF UNSATURATED SOILS FROM SOIL MOISTURE REDISTRIBUTION[J].Research of Soil and Water Conservation,1985,(02):47-53.
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Shao Mingan.DETERMINING HYDRAULIC PARAMETERS OF UNSATURATED SOILS FROM SOIL MOISTURE REDISTRIBUTION[J].Research of Soil and Water Conservation,1985,(02):47-53.
根据土壤水分再分布过程确定土壤的导水参数
《水土保持研究》[ISSN:1005-3409/CN:61-1272/P]
卷:
期数:
1985年02期
页码:
47-53
栏目:
出版日期:
1900-01-01
- Title:
- DETERMINING HYDRAULIC PARAMETERS OF UNSATURATED SOILS FROM SOIL MOISTURE REDISTRIBUTION
- 摘要:
- 本文根据土壤水分的再分布过程提出了推求土壤导水率和水分扩散率的方法，在湿润剖面平均湿度（θ）和湿润锋湿度（θ）有确定函数关系和一维垂直非饱和流方程的基础上，提出的计算导水率和扩散率的公式分别为K（θ）=HΔθVC（θ）/[a1bθ（1+b1）+HC（θ）]和D（θ）=HΔθV/[a1b（1+b1）+HC（θ）]。该方法对所研究的土壤测定范围是，重壤土0.08≤θ≤0.28，轻壤土0.08≤θ≤0.22。本文用土壤水分动态模拟检验了方法的准确性，其结果令人满意。
- Abstract:
- This paper presents a approach of determining unsaturated hydraulic conductivity aid diffusivity based on the redistribution of soil moisture The suggested formulas of calculating hydraulic conductivity and diffusivity,based on the function relationship between average wetness of wetting profile and wetting front and the one-dimensional equation of vertical unsaturated flow, are: K(θ)=HΔθVC(θ)/[a1bθ(1+b1)+HC(θ)] and D(θ)=HΔθV/[a1b(1+b1)+HC(θ)] respectively, The accuracy of the method was verified by soil moisture dynamic modeling, The results show that the accuracy is satisfied, The measurement range are from θ=0.08 to θ=0.28 for heavy loam and from 0.08 to 0.22 for light loam. The method is accurate, convenient and usable for the loessial soils.
参考文献/References:
[1] Hillel, D Applications of Soil Physics.Academic Press, NewYork, London Toronto, Sydney, San Francisco, 1980,
[2] 四川大学数学系高等数学教研组, 高等数学, 人民教育出版社, 1978,
[3] 雷志栋、杨诗秀, 非饱和土壤水一维流动的数值计算, 土壤学报, 1982(2).
[4] 杨文治等, 黄土高原几种土嚷在非饱和条件下水分的蒸发和移动, 土壤学报, 1985 (1).
更新日期/Last Update:
1900-01-01