Assessment of Erosional Disturbance of Vertisols in Israel by SAR Values

摘要

An analysis of the spatial distribution of the sodium adsorption ratio (SAR) values in the upper subsurface horizons of Vertisols made it possible to estimate the degree of sheet erosion on the dissected coastal plain composed of the sodium-bearing montmorillonite clay in Israel. The depth of the appearance of slicken-sides in the profile of the Vertisols was used as an additional criterion of the disturbance of these soils by erosion. The approximate rates of erosional dissection of the local landscapes after the deposition of montmorillonite clay are discussed.