DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 9-10/2017 str. 29 <-- 29 --> PDF |
tool. The study application was conducted in stand of Turkish red pine (Pinus brutia Ten.) within the borders of Bahçe Forest Enterprise Chief, in Osmaniye, Turkey. The productivity of two methods was investigated based on time study approach. MATERIAL AND METHOD MATERIJAL I METODA Material The study was conducted during a thinning operation taken place in Stand Compartment 127 within the borders of Bahçe Forest Enterprise Chief located in Osmaniye Enterprise Directorate of Adana Regional Forest Directorate. Dominant tree species in the study area was mainly Turkish red pine (Pinus brutia Ten.) (Figure 1). The study field is located between 37° 11’ 18“ – 37° 10’ 41“ North latitude and 33’ 44“ – 36° 34’ 46“ East longitude. Average ground slope and elevation were 32.73% and 683 m, respectively. In the study area, small-diameter timbers and medium-diameter timbers in short length class, mine poles, and industrial wood were produced. A „Husqvarna 61” brand chainsaw, a chainsaw mounted debarking tool and an axe were used in debarking activity (Figure 2). During measurement of the medium-diameters and length of the timber, „MANTAX Precision” brand calipers and „Weiss” brand 50 meters steel tape were used, respectively. At the same time, bark thickness was determined by a bark gauge by measuring from both ends of the timber. Operation time during debarking was measured by two chronometers (Selex 7064). This study was conducted by two workers, one work with a chainsaw mounted debarking tool and one with an axe (Figure 3). SPSS software package was used for statistical analyses. At the beginning of the field studies, after observing the debarking activities, a time study form was developed for recording the time measurements of each work stage of the operation. Time Study – Mjerenje rada Work stages investigated during debarking are debarking and turning the timber (primary activity), preparation (secondary activity) and small repairs and maintenance (additional activity). In order to prevent any operational bias during work stage, data was collected during debarking |