 The simulation of dust emission in semi-arid regions requires accounting for the influence of soil moisture on wind erosion threshold, which is affected by molecular adsorption and capillary forces between soil grains. An expression of moisture tension as a function of soil moisture and W has been derived from retention curves, and a parametrization of wet-to-dry erosion thresholds has been developed based on experimental data. The simulation results were found to be in good agreement with experimental data for different soil textures. This article was authored by F. Fekin, B. Mardekarina, and G. Bergamedi.