Landslide susceptibility map for Ciulucurilor Hills was
carried out using frequency ratio method. Its calculation is performed by
the ratio of the percentage of landslide areas for each factor taken into
account (lithology, elevation, drainage depth, slope, exposition, land
use, distance from river and drainage network density) and the
percentage of the total area corresponding to each factor. Very lowsusceptibility land occupies 10.1% of the region surface and is the most
common in the south-west and the Big Ciuluc and the Middle Ciuluc
river valleys. There is 25.8% of the built surface on this area. Lowsusceptibility land occupies 40.3% of the territory, being the largest class
of susceptibility. It holds 56.2% of the arable land and 47.6% of the built
surface. The average susceptibility is recorded on 22.9% of the territory
and has a more compact distribution in Soloneţ basin. This land holds
38.8% of the pasture surface and 28.5% of the perennial plantations.
The land with high and very high susceptibility occupies 26.7% of the
territory, with a high frequency in the south-west of the region, on
interfluve between the Big Ciuluc and the Middle Ciuluc rivers. These
classes have 81.9% of forest surface and only 12.6% of the arable land.
The length of the roads located on the land with high and very high
susceptibility is 164.5 km.
Keywords:
landslides, susceptibility, the Method of Frequency Rate, Ciulucurilor Hills