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分析了土壤盐分运移的各种机理,在同时考虑水分和盐分运移温度效应的基础上,建立了非饱和土壤热、湿、气及盐分耦合运移的数学模型,继而通过数值计算考察了20 cm深的砂土中盐分运移温度效应的大小,结果显示:5年后温度效应对4个不同深度处土壤溶液中盐分浓度的相对影响分别达7.8、4.8、0.8和0.34倍.

参考文献

[1] Philip J R;De Vries D A .Moisture Movement in Porous Materials Under Temperature Gradients. Trans. Amer[J].Geophys Union,1957,38:222-232.
[2] Haridaan M;Jensen R D .Effect of Temperature on Pressure Head-Water Content Relationship and Conductivity of Two Soils[J].Soil Science Society of America Journal,1972,36:703-708.
[3] Philip J R .The Theory of Infiltration: 4. Sorptivity and Algebraic Infiltration Equations[J].Soil Science,1957,84(08):257-264.
[4] Giakoumakis S G .Eliminating the Effect of Temperature form Unsaturated Soil Hydraulic Functions[J].Journal of Hydrology,1991,129(05):109-125.
[5] 范爱武,刘伟,陈丽湘,许国良.土壤水分运移温度效应的数值研究[C].中国工程热物理学会2004年传热传质学学术会议论文集(上册),2004:409-412.
[6] Liu W .A General Mathematical Modeling for Heat and Mass Transfer in Unsaturated Porous Media: an Application to Free Evaporative Cooling[J].International Journal of Heat and Mass Transfer,1995,31(01):49-55.
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