Wind Erosion It is the detachment , transportation and deposition of soil particles by wind. Or Removal of soil particles by the action of air and deposition on another place.
Mechanism of Wind Erosion n Saltation : Lifting and bouncing of a particle, most important for particles 0. 1 -0. 5 mm diameter. Surface Creep: Coarse and very coarse sand grains rolled on ground surface. Suspension : Lifting of silt and clay sized particles (Greater than 0. 1 mm )high into the air and can thus be carried long distances.
Wind Erosion Equation (WEQ) E = f (I, C, K, L, V) I is the soil credibility by wind. C is the local wind erosion climatic factor. K is the soil surface roughness. L is the unprotected width of the field. V is the vegetative cover factor.
Forms Of Wind Erosion Detrusion • Effluxion • • Extrusion Efflation Abrasion
Damages of Wind Erosion n n n Losing topsoil has a direct effect on the productivity of land. A loss of 2. 5 cm of soil can reduce Wheat yields by 5_10% while a loss of 20 cm can reduce yields to 1/3 of the previous levels. Soil productivity decreases due to a decrease in top soil , soil fertility becomes less. Organic matter is reduced. Dissemination of weeds. Cover the plants and seed during deposition. Effect on working machinery.
The Areas Affected By Wind Erosion. Thal n Cholistan n Mianwali n Muzaffargarh n Thar n Dera Ghazi Khan n