土壤导热率

并使用Johanson的方案替代了模式中原有的土壤导热率的参数化方案，考虑了含冰量对土壤水热性质的影响。

The original soil thermal conductivity scheme is replaced by Johanson scheme and the soil thermal and hydraulic properties is modi-fied depending on soil ice content .

土壤导热率和土壤导温率先显著增大，后显著减小。

At first , the soil thermal conductivity rate increased significantly , and then began to decrease after increased to a certain extent .

研究结果表明，对特定土壤而言，土壤导热率与含水率之间可建立幂函数关系；砂粒、粉粒和粘粒含量对土壤热性质有不同程度的影响；

The results have shown that to certain soil , the relationships between thermal conductivities and water content can be expressed by power function .

土壤有机质的增加也会使土壤导热率减小；

Increase of organic matter content may also decrease thermal conductivity .