WIND ERODIBILITY AS INFLUENCED BY RAINFALL AND SOIL SALINITY

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Abstract
Wind erosion has been observed on some fields shortly after a rainstorm. Chepil (4) noted that some of the coarse soil grains left loose on the surface following rainfall contributed to the initial stages of wind erosion. Such coarse grains remain on the surface after dispersal of surface soil by raindrop impact and splash (3, 4). Crust formation associated with rainfall presumably would reduce wind erosion by increasing bulk density and lowering aggregation (8). Soil crusting is also associated with soil salinity (2, 3, 7, 9, 10). Wind erodibility of soils following rainstorms of various intensities and relatively short durations have not been studied extensively. Little, if any, information exists on the influence of various salts on a soil's susceptibility to movement by wind. Reported here are the combined effects of added salts, rainfall intensity, and rainfall duration on wind erodibility and mechanical strength of a sandy soil. © Williams & Wilkins 1972. All Rights Reserved.

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