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Productivity Linear Regression Models of Tree-Length Harvesting System in Natural Coastal Aleppo Pine (Pinus halepensis L.) Forests in the Chalkidiki Area of Greece

Christos Gallis ; Forest Research Institute, Vassilika, Thessaloniki, GREECE
Gavriil Spyroglou ; Forest Research Institute, Vassilika, Thessaloniki, GREECE


Puni tekst: engleski pdf 648 Kb

str. 115-123

preuzimanja: 725

citiraj


Sažetak

Time studies of harvesting and skidding tree-length logs in Aleppo pine (Pinus halepensis L.) natural coastal forests of Chalkidiki area in northern Greece were carried out to formulate linear regression models and to evaluate productivity. The harvesting system consisted of a feller with chainsaw for felling, delimbing and crosscutting, and a four wheel drive farm tractor, with a 74 kW engine, equipped with a special winch attached to the tractor three point hitch for the extraction of tree length logs. Operational factors such as distance, slope, volume and the time required for harvesting and extracting tree length logs were measured and recorded. The results illustrate that the calibrated linear regression models show strong correlation between the time needed for harvesting operations and the extraction distance from the stump to the forest road.

Ključne riječi

tree length system; extraction; time studies; linear regression models; productivity; Aleppo pine; natural coastal forests

Hrčak ID:

86038

URI

https://hrcak.srce.hr/86038

Datum izdavanja:

7.6.2012.

Posjeta: 1.189 *