EROSION POTENTIAL OF SNOW COVER IN THE CZECH REPUBLIC

Amount of water derived from snow and melting rate can be collectively described as the erosion potential of water accumulated in the snow. The erosion potential of snow was calculated for thirty cold periods i.e. 1st November to 30th April (1980/1981 to 2009/2010) based on climatilogical data of fi y stations of Czech hydrometerological station from diff erent climatic conditions according to Climatic region of Estimated Pedological Ecological Unit. Snow erosive potential statistically signifi cantly depends on altitude (r = 0.726**, ? = 0.01) and also on climatic region (r = 0.790**, ? = 0.01). Mapping expression was based on average values of thirty-year period. Range of snow erosive potential in the map responces to quantile values, quintile values respectively (Q0.2, Q0.4, Q0.6, Q0.8). A map of erosion potential of snow cover for arable land deals with an assumption of arable land incidence. It was determined by excluding forests, built area, land with a slope of 12 ° and areas with an altitude of 700 m