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INFILTRATION AND REDISTRIBUTION OF SOIL WATER DURING SEASONAL FREEZING AND THAWING PERIODS

机译:季冻期和解冻期土壤水分的渗透与再分配

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摘要

In this study, water infiltration characteristics and soil water redistribution during winter and spring has been discussed based on the field observation. The results showed that the permeability of the frozen soil was strongly affected by water content and groundwater depth. The features of soil freezing and thawing had an obvious effect on infiltration rate and wetted front. Infiltration rate and wetted front depth decreased as the frozen depth increased due to a large portion of water was changed into ice in soil. Water within 15-50cm frozen soils in the irrigation plots increased by 7.8mm in contrast to 2.2mm in non-irrigation plots during soil freezing in later March.
机译:在此研究的基础上,讨论了冬季和春季的水分入渗特征和土壤水分的重新分布。结果表明,冻土的渗透性受含水量和地下水深度的强烈影响。土壤的冻融特征对入渗速率和湿润锋面有明显影响。随着冻结深度的增加,入渗率和湿润前深度减小,这是由于大量的水在土壤中变成了冰。在3月下旬的土壤冻结期间,灌溉地块中15-50cm冻土中的水增加了7.8mm,而非灌溉地块中的水增加了2.2mm。

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