## 3 Results
### The Probability of Landslide Occurrence in Cluj County  
The analysis of the landslide spatial distribution at the level of administrative units highlighted the existence of large areas affected by stabilized landslides (with a certain potential for reactivation) in the following administrative units: Cluj-Napoca (2.97% of the total affected area in the county/519 hectares), Aiton (2.62%/111 hectares), Ploscos (2.48%/103 hectares), Feleacu (2.32%/153 hectares), Ceanu Mare (2.29%/217 hectares), and Apahida (2.03%/215 hectares). In Cluj County, an area of 4948 ha is affected by landslides (Figure 9). \begin{table}
\begin{tabular}{c c c c c c c c c c c} \hline \hline \multicolumn{10}{c}{**Class of Soil Erosion**} \\ \hline
**Very Low** & \multicolumn{2}{c}{**Low**} & \multicolumn{2}{c}{**Medium**} & \multicolumn{2}{c}{**Medium-High**} & \multicolumn{2}{c}{**High**} & \multicolumn{2}{c}{**Very High**} \\ \hline
**ha** & **\%** & **ha** & **\%** & **ha** & **\%** & **ha** & **\%** & **ha** & **\%** & **ha** & **\%** \\ \hline
54,865.4 & 82.6 & 8220 & 12.4 & 3175 & 4.8 & 113.5 & 0.2 & 10.3 & 0 & 0.2 & 0 \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Distribution of soil loss classes in Cluj County. Figure 9: Active landslides in Cluj County. Analyzing the spatial distribution of landslides in Cluj County in relation to land use at a detailed level, it was found that 45.37% of the landslides affect arable lands. In these areas, agricultural technology is affected and the geomorphic risk might be increased because of the overlapping of landslides and local soil erosion. Permanent grasslands represent another land use class highly affected by landslides, as 37.7% of the landslides in Cluj County occur in these areas. In this case, there is a cumulative negative effect induced by the landslides and the decrease in the grasslands' production capacity, not to mention the negative effect produced by the density of animal tracks in triggering landslides on slopes. In total, 7923 parcels of land belonging to different land use classes were identified as affected by active landslides (Table 2). This means that there are 4963 betares that require extensive consideration in the future in order to mitigate the negative effects and to lower the probability of the occurrence of new landslide events or the reactivation of the already existing landslides. A probability map at county level was drawn up as a result of applying the equation concerning the probability of landslide occurrence (Figure 10). The class of high probability of landslide occurrence, characterized by a value of hazard coefficient (Km) between 0.5 and 0.8, covers 92.3 km\({}^{2}\), representing 1.4% of the analyzed territory. A large part of the study area, 45.1% and corresponding to 3007.7 km\({}^{2}\), presents a medium probability of landslide occurrence (Table 3). These areas are mainly located in the hilly sector dominated by geological deposits consisting of clays, marls, and intercalation of tuffs. \begin{table}
\begin{tabular}{c c c c} \hline
**Land Use Parcels** & **Number of** **Parcels** & **Area (Hectares)** & **\%** \\ \hline \multicolumn{1}{c}{Arable land} & 483 & 2251.7 & 45.37 \\ \hline \multicolumn{1}{c}{Permanent grasslands} & 66 & 1839.9 & 37.07 \\ \hline \multicolumn{1}{c}{Unproductive lands covered by reed or cattail, swamp vegetation} & 880 & 304.8 & 6.14 \\ \hline \multicolumn{1}{c}{Waste heaps or dumps} & 15 & 165.2 & 3.33 \\ \hline \multicolumn{1}{c}{Yards and constructions} & 908 & 122.4 & 2.47 \\ \hline \multicolumn{1}{c}{Forest vegetation} & 258 & 96.0 & 1.94 \\ \hline \multicolumn{1}{c}{Roads and railways} & 2 & 74.6 & 1.50 \\ \hline \multicolumn{1}{c}{Permanent crops other than vineyards: orchards} & 247 & 55.8 & 1.12 \\ \hline \multicolumn{1}{c}{Streams} & 306 & 48.1 & 0.97 \\ \hline \multicolumn{1}{c}{Vineyards} & 2038 & 2.8 & 0.06 \\ \hline \multicolumn{1}{c}{Areas near water bodies} & 2720 & 1.8 & 0.04 \\ \hline \multicolumn{1}{c}{Total} & 7923 & 4963 & 100 \\ \hline \end{tabular}
\end{table}