Compaction of forest soil by skidding devices (the special forest wheel tractor LKT-81)
1990
Demko, J. (Vysoka Skola Lesnicka a Drevarska, Zvolen (CSFR))
With the successive mechanization of logging operations in the forest the extent and degree of damage caused to forest soil increases. Damage caused to forest soil by its compacting and by the change of the water regime influences considerably the production capacity and the sanitary condition of the forest. Studying the influence of wheel technics (LKT-81) it has been established that the largest increment of volume weight of the soil occurs after the first drive of the tractor into the depth of 15 cm. After the second drive of the tractor still a moderate growth of the volume weight of soil is observed, after the third drive the increment of volume weight of the soil is minimal. As the zone of soil compacting also the space between the wheel tracks can be regarded, there the increment of volume weight (OH) of the soil is most pronounced after the first drive of the tractor in the depth of 20 to 30 cm. It has been also established that the compacting of soil does not cause an increase of the soil humidity, on the contrary, soil moisture decreases. The influence of the LKT tractor on soil changes proved to be ecologically dangerous since already the individually observed changes of the soil are grave and by their combination their unfavourable combination effect multiplies.
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