The diploma thesis deals with the issue of forest soils damage during the logging-transport process. The main goal of the work was to analyze, evaluate and compare changes in the properties of forest soils at different numbers of passes of three types of tractor technologies in the VŠLP TU in Zvolen. The subject of the analysis was the evaluation and comparison of changes in the bulk density of the soil and the penetration resistance of the soil. The bulk density of the soil and the related soil sampling were performed with a set of Eijkelkamp soil rollers with a volume of 100 cm3. The penetration resistance of the soil was detected using the Penetrologger Eijkelkamp penetrometer. The results show that there was a clear increase in the bulk density of the soil between the control measurement and the last 40 pass for all three types of tractor technology, ranging from 26 to 32 %. Based on the results of the analyzes, it was proved that no statistically significant differences were confirmed between the individual tractor technologies, which means that they do not differ in terms of compaction rate, despite the different weights and types of tires. From the results of statistical analyzes, it was thus confirmed that with the increasing number of passes of tractor technologies, the soil properties of forest soils change and comes to their subsequent compaction.