soil freezing and thawing的意思|示意

The effect of alternative freezing and thawing can enhances the activities of some soil enzymes greatly, such as phosphatase, nitrate reductase and nitrite reductase.

冻融交替作用明显地增强土壤中磷酸酶、硝酸还原酶和亚硝酸还原酶的活性。

The above results show that, the effect of alternative freezing and thawing has a great influence on the soil organic matter, soil nitrogen, soil potassium and some soil enzymes.

上述研究结果说明，冻融交替作用对黑土土壤有机质、氮钾和酶活性产生重要影响。

The characteristic curves of soil freezing and thawing reflect the strength, thermal properties and water and solute transport regularity.

土壤冻融特征曲线是反映土壤冻融过程中的水、热、盐迁移规律以及冻土强度、冻土的热性质的重要参数。

Freezing and thawing of soil moisture is accompanied with a series of physical processes in seasonal freezing-thawing areas, such as moisture transfer and heat exchange.

在季节性冻土分布区，土壤水分的冻结和融化必将会伴随着热量交换、水分迁移等物理过程。

It was also shown that there was an inverse correlation between the speed of temperature variation and the initial water content for freezing soil, but no monotonic correlation for the thawing soil.

试验结果还表明：正冻土温度变化速率与其初始含水率间存在反相关性，而正融土温度变化速率与其初始含水率间无单调相关性。

After the experiment and the theoretical analysis, have established the reflection freezing and thawing to the soil body constitutive property influence dynamic constitutive parameter.

经过试验和理论分析，得到了反映冻融对土体结构性影响的动态结构性参数。