Examination of extraction methods in terms of transport technique in the sample of Devrek Forest Enterprise

The progression of forest areas in Turkey and in the world towards the mountain areas each day and the increase of working obligation have made the extraction method important. Forestry affairs, especially the production of raw wood and the work and treatments during the phase of production through the stage of extraction are generally regarded among heavy works. Parallel to the technological developments, the use of power machine instead of human and animal power in heavy works has become more common day by day.This master thesis aims at comparing the productivity of 5 different methods of extraction applied in the same compartment including animal power, aerial line, cabling with tractor, dragging with tractor, cabling with MB- Trac and determining the harms of tree and sapling during the dragging proceeding and retaining the state of harm occurred on forest soil.Accordingly, the average yield value for 5 different extraction methods applied in the dragging distance of 100 m. are; extraction methods with animal power have determined as 3,803m3/h, extraction methods by dragging with tractor, 6,245m3/h; extraction methods with cabling with tractor, 2, 799m3/h, and the extraction methods with aerial line 10, 094 m3/h.Consequently, the study has been determined that the varied extraction methods have caused harms in different shapes and degrees to saplings and planted trees; the most harm has been given to the planted trees by cabling with tractor and the most harm has been given to the sapling by dragging with tractor.