EROSION RESISTANCE OF SOME SOILS OF TAJIKISTAN

Values of a quantitative index of erosion resistance (namely, the stre am erosion velocity) are determined for the genetic horizons of the pr incipal soil groups of Tajikistan. A relationship is demonstrated betw een stream erosion velocity and stability of soil aggregates in water, the cohesiveness of the soils, and their content of roots. It is show n that a familiar equation for stream erosion velocity, developed prev iously for plains soils, can be used to evaluate quantitatively the er osion resistance of the mountain and piedmont soils of Tajikistan.