The purpose of the thesis was to test, how the landslides are considered when zoning the protection forests in Slovenia. Using the respective database it was also tested how the different soil properties (soil type, depth, organic matter, texture, soil bonitet number and effective field capacity (EFC)) affect the landslide occurrence. It was also tested how the land use (forest/non forest) affects the landslide occurrence on different classes of soil properties. The results showed that the landslides haven’t been properly considered during the zoning of the protection forests, as only 48,8 % of all the landslides in forests occurred in the protection forests (39,7 % of total forest area). Using the χ2 test of homogeneity we concluded that all the tested soil properties have a statistically significant influence on the landslide occurrence. In the case of the soil type analysis we concluded that it correlates highly with the bedrock analysis. Analysis of the soil’s depth showed that the landslides occur more often than expected on the soils with depth class 0–70 cm, organic matter content classes 1–4 %, texture classes with moderately fine and moderately fine to fine texture, bonitet numbers 41–60 and 71 – 80 and EFC 80–150 mm. The differences in the landslide occurrence between the forests and non-forests on different classes of all the tested soil properties were also found to be statistically significant. We intend to use the tested soil properties for creating landslides hazard maps in the future analysis. Those maps could be used as a tool for zoning of the protection forests that protect from the landslides.
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