Influence of Moisture Content on Infiltration Characteristics in Seasonal Frozen and Thawed Soils

Based on the water infiltration in wheat field in winter and spring seasons, effects of moisture content on cumulative infiltration, infiltration rates, and the change of infiltration capacity during soil freezing and thawing were discussed in this paper. The results indicated that infiltration capacity of frozen and thawed soils decreased with the moisture content increased. The relationship between cumulative infiltration and soil moisture content conformed to power function law. The lower hydraulic conductivity of soils with higher moisture content was a major reason for lower infiltration capacity. It would be practical reference to determination of irrigation parameters and management of water resources.