New Forestry Mechanisation : Journal for theory and application of forestry engineering, Vol. 38 No. 1, 2017.

Original scientific paper

Determination of Average Skidding Distance Using GIS

Vladimir Petković ; University of Banja Luka, Faculty of Forestry Bulevar Vojvode Stepe Stepanovića 75 78000 Banja Luka BOSNIA AND HERZEGOVINA
Dane Marčeta ; University of Banja Luka, Faculty of Forestry Bulevar Vojvode Stepe Stepanovića 75 78000 Banja Luka BOSNIA AND HERZEGOVINA
Darko Ljubojević ; Public Forestry Company »Šume Republike Srpske« a.d. Sokolac Forest Management »Prijedor« Vožda Karađorđa 4/2 79101 Prijedor BOSNIA AND HERZEGOVINA
Jovan Kuburić ; Public Forestry Company »Šume Republike Srpske« a.d. Sokolac Forest Management »Oštrelj-Drinić« Centar 10 79290 Petrovac-Drinić BOSNIA AND HERZEGOVINA

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page 33-42

Abstract

Transport of wood is one the most expensive components of wood production. It usually consists of three phases: winching, skidding and long-distance transport. The first and the second phase of transport are the most important in terms of costs. They depend on the distance between the tree-felling area in the forest and the nearest forest road. That distance is the skidding distance. Determination of the skidding distance is very important for forestry operational planning because it is an indicator of forest accessibility and it is directly connected with costs. The skidding distance can be obtained in several ways: by on-site measurement, by calculation using mathematical models and by using GIS software like ArcGIS 10. Skidding distance can be defined as geometric and real. Real skidding distance is a product of geometric skidding distance and skidding factor. Skidding factor depends on the terrain slope and presence of terrain obstacles. Geometric skidding distance can be obtained by using ArcMap module of ArcGIS 10 software, and it is defined as the distance between the compartment centroid and the nearest point on the forest road. In this research, the skidding factor was based on spatial analysis of Digital Terrain Model (DTM). The real skidding distance, calculated using ArcGIS 10 software, was compared with skidding distances from Operational Plans for eight compartments in the Management Unit »Bobija-Ribnik« in the Forest Management »Oštrelj-Drinić« Petrovac. The skidding factor for the given terrain conditions in the eight selected compartments was calculated as the relation between the real skidding distance from Operational Plans and geometric skidding distance gained by ArcGIS 10 software.

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