Hysteresis in soil hydraulic conductivity as driven by salinity and sodicity – a modeling framework

Saturated Hydraulic Conductivity of Semiarid Soils: Combined Effects of Salinity, Sodicity, and Rate of Wetting

als, high pH, and low sesquioxides content was found to be susceptible to sodic conditions, with the magnitude Combined effects of soil conditions (wetting rate), soil sodicity, of the decrease in HC being strongly dependent on the and salinity on soil saturated hydraulic conductivity (HC) have not been studied systematically and were the objective of our study. We electrolyte concentration in ...

Computer Erosion Modeling Considering Soil Hydraulic Conductivity

Improved computer models of erosion have been developed, considering soil hydraulic conductivity. The models deal with erosion of levees, dams and embankments due to overtopping. The simulations trace the formation of rills and gullies, beginning with initial overtopping and continuing to final breaching. Physical models performed at 1-g and high g using a geotechnical centrifuge have been used...

Hysteresis: Phenomenon and Modeling in Soil- Water Relationship

Hysteresis has been widely recognized in the soil water relationship. In this paper, a detailed review of hysteresis was performed in relation to its models. So far, different models have been suggested to describe hysteresis in the water retention curve (WRC) that could be categorized into two main groups: conceptual and empirical models. The models in the first group are based on the domain t...

Determination of unsaturated hydraulic conductivity by internal drainage assuming a uniform soil water profile

The Effect of Soil Salinity and Sodicity on Soil Erodibility, Sediment Transport and Downstream Water Quality

There is an abundance of literature on many aspects of soil salinity and sodicity, and the impact of increased salt and sodium on properties, behaviour, management and productivity of soils. However the impact of sodicity on erosion and soil erodibility and sediment transport has received less attention. The aim of this study was to investigate the effects of changing soil salinity and sodicity...