Topsoil properties were studied in a ski slope at Petrovy kameny, Hruby Jesenik Mts. Effect of skiing was combined with a complex slope gradient, which comprised effects of vegetation type and soil horizons. Soil sorption complex and humification properties were expected to reflect both factors. Cation exchange capacity and to some degree saturation of adsorption complex were systematically lowered due to ski slope, and they were influenced also by vegetation type. C:N reflected vegetation type, but it reflected skiing only indirectly. The slope gradient significantly affected the soil sorption complex, yet contrary to our expectations. Several possible interpretations include species traits (litter decomposability, nutrient uptake) and patterns of topsoil horizon types, which can be associated to the history of the upper treeline.
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