中文摘要：

基于湿分迁移温度效应的“表面张力-粘滞流”理论，对Liu等提出的非饱和多孔介质中热、湿、气耦合运移的“六场-相变-蒸汽扩散模型”进行了改进，得到了新的数学模型．除了考虑毛细力、惯性力、粘性力、达西阻力、重力以及气液之间的相互作用力和相变之外，改进模型中还反映了多孔介质水分运移的温度效应．与其他经典模型相比，提出的改进模型的最大特点是它在水势、水力传导系数和水的扩散系数中直接反映温度效应，而不需要增加新的反映温度效应的附加项．因此，该模型应用起来更为方便．

英文摘要：

On the basis of the ＂Surface Tension-Viscous Flow Theory＂, a mathematical model, which was put forward by Liu etc. to describe the simultaneous transfer of heat, moisture and gas in moist unsaturated porous media, was obtained by modifications of the ＂Six Fields-Phase Change-Diffusion Model＂. Besides the capillary force, inertial force, viscous force, gravity, Darcy＇s resistance, phase change and the interactions between liquid water and gaseous mixture, the temperature effect on soil water transportation was involved in the modified model. In comparison with other classic models, the improved model was characterized by directly reflecting temperature effect in water potential, hydraulic conductivity and water diffusivity and without adding additional qualities or terms to reflect the mechanism of temperature effect on soil water transportation. It is convenient to apply the model.