Wind Erosion in Western Queensland Australia

Chapter 5 – Land Erodibility Model Developmentinitiated. As u *t decreases the wind shear velocity required to entrain soil particles and fineaggregates will fall. Conceptually, land erodibility (wind erosion hazard) can be consideredthe inverse of u *t , for as the threshold for particle entrainment decreases susceptibility orerodibility will increase.Land erodibility is a function of soil erodibility, and the presence of non-erodible roughnesselements (rocks, vegetation, landforms) that affect wind erosivity. Chapter 2 described therelationships between these controls, which are illustrated in Figure 5.2.Figure 5.2 Flow chart illustrating the relationships between wind erosion controls within a landscape.Gray boxes represent environmental conditions and processes that determine soil surface conditionsand the availability of loose erodible sediment, and the effect of non-erodible roughness elements onthe wind shear velocity (wind erosivity)133