Knowledge of soil moisture dynamics in the unsaturated soil zone provides valuable information on the temporal and spatial variability of groundwater recharge. This is especially true for the Mediterranean region, where a substantial fraction of long-term groundwater recharge is expected to occur during high magnitude precipitation events of aboveaverage wet winters. To elucidate process unders...

Factors affecting preferential flow and transport in the vadose zone need to be investigated by experiments and simulations to protect groundwater against surface applied chemicals. The objectives of this study were to investigate the effects of several factors (soil structure, initial soil water content (SWC), and application rate) and their interactions on the extent of preferential flow and ...

In view of the potential soil leaching risk reuse fertilizer reclaimed from micro-flush sanitary wastewater, batch tests adsorption and degradation, column percolation test multi-stage box were adopted. The characteristics leachate after interaction between soil, as well changes attributes in system, analyzed. After obtaining correlation coefficients solute transport through above experiments, ...

This study investigated the ability of a HYDRUS 1D model for predicting vertical distribution potassium iodine (200 ppm) in soil columns after amendment with five different common remediation materials (gypsum, lime, fly ash, charcoal, and sawdust) at rate 2.5% (w/w), relative to an unamended control soil. Results showed that soil, leaching was decreased by all amendments but magnitude decrease...

The vertical change in the number of macropores causes a variation relative macroporosity (wf) and effective aggregate width (dag) over soil profile. Both parameters are used HYDRUS to represent this variation, increasing making automated calibration challenging. working hypothesis is that we can improve an analytical estimation wf dag developed previous research by inverse with meta-model for ...