unsaturated hydraulic conductivity, K, expressed as a function of the soil water content, u, or the soil water Hysteresis has been found in both the hydraulic conductivity, K, pressure head, c, and the relation between u and c must vs. pressure head, c, relationship, and the soil water content, u, vs. c relationship. This limits the application of a unified solution for be specified before anal...

Hydrological effects of land-use change are of great concern to ecohydrologists and watershed managers, especially in the Atlantic coastal plain of the southeastern United States. The concern is attributable to rapid population growth and the resulting pressure to develop forested lands. Many researchers have studied these effects in various scales, with varying results. An extended watershed-s...

This work presents a rigorous numerical validation of analytical stochastic models of steady state unsaturated flow in heterogeneous porous media. It also provides a crucial link between stochastic theory based on simplifying assumptions and empirical field and simulation evidence of variably saturated flow in actual or realistic hypothetical heterogeneous porous media. Statistical properties o...

in this study, hydrus2d/3d software was used to estimate the hydraulic parameters of van genuchten-mualem model via inverse modeling using double-ring infiltrometers data in 3 different soil textures. nine scenarios of inverse modeling (divided in three groups) were considered with different number (5, 4 and 3) of fitted hydraulic parameters for optimization. in the first group, simulation was ...

cial neural networks have become a common tool for modeling complex “input–output” dependencies. In the past, neural network models have been used as a special class of pedotransfer functions (PTFs) using feed-forward back propagation or radial basis functions to approximate any continuous (nonlinear) function (Hecht-Nielsen, 1990; Pachepsky et al., 1996; Schaap and Bouten, 1996; Minasny and Mc...

We devised a simple infiltrometer to easily assess soil infiltration capacity and key hydraulic properties considering the impact of structure on infiltration. conducted two series five in situ experiments each undisturbed forest grassland contrasting bulk densities saturated conductivity (Ks), one six columns with mineral various textures without structure. Finally, we measured Ks, water conte...

Abstract The effect of milorganite, a commercially available organic soil amendment, on nutrients, plant growth, and yield has been investigated. However, its hydraulic properties remains less understood. Therefore, this study aimed to investigate the milorganite amendment evaporation, moisture retention, conductivity, electrical conductivity Krome soil. A column experiment was conducted with t...