论文部分内容阅读
在土壤不同含水量条件下，研究了温度梯度对非饱和土壤水分运动的影响，结果表明：在同一含水量条件下，增温可提高土壤水势，呈现黄泥巴＞土＞黑垆土的顺序；在同一含水量条件下，３种土壤在低温区及高温区均随温度梯度增加，土壤水分通量和导水率增大，但土壤导水率随温度梯度变化幅度小于土壤水分通量；温度梯度和含水量相同时，高温区土壤水分通量和导水率大于低温区；土壤水分通量及导水率呈现黑垆土＞土＞黄泥巴的顺序。同一土壤随含水量增大，土壤水分通量和导水率增加。
The effect of temperature gradient on the water movement of unsaturated soil was studied under different water content of soil. The results showed that under the same water content, warming could increase the soil water potential, showing the order of Huangnimpa> Under the same water content, the three kinds of soils increased with temperature gradient and the soil water flux and hydraulic conductivity increased in low temperature and high temperature, but the change range of soil hydraulic conductivity with temperature gradient was less than that of soil water flux. Temperature When the gradient and the water content are the same, the soil moisture flux and hydraulic conductivity in the high temperature area are higher than those in the low temperature area. The soil water flux and hydraulic conductivity show the order of black soil, soil, and yellow mud. The same soil with increasing water content, soil water flux and water conductivity increased.