Comparison of potential and real erodibility of soil by wind
2007
Dufkova, J.,Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic). Ustav Aplikovane a Krajinne Ekologie
Three areas located in Southern Moravia, Czech Republic, which were the most susceptible to wind erosion were chosen for measurements and comparisons of potential and real erodibility of soil by wind. The measurements were done during 2006 in the districts of Breclav, Znojmo and Uherske Hradiste. Both potential and real erodibilities were determined using data about wind velocity, soil humidity, and contents of clay and non-erodible soil particles. At any of the studied areas, the potential soil losses did not exceed the limit of the tolerable amount of soil loss (10 t/ha/year). On the other hand, the limit of the tolerable soil loss for real erodibility (1.4 g/square m) was exceeded in two regions. Our results showed that the estimated data of potential soil losses did not correspond to the real values measured on the spot. In fact, the equations used to date are based on the presumption that soil susceptibility to wind erosion decreases with the content of clay particles, which has been shown to be wrong.
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