Results 61 to 70 of about 588 (133)

PredictingWood Skidding Direction on Steep Terrain by DEM and Forest Road Network Extension

Croatian Journal of Forest Engineering, 2008
The study presents the procedure and functioning of themodel for large-scale determination of wood skidding direction on steep slopes. The determination of wood skidding direction significantly depends on the position of the forest stand and the adjacent
Janez Krč, Boštjan Košir
doaj  

Soil compaction in final harvest operations using medium-sized cable skidders: results of an experimental study with controlled payloads

Frontiers in Forests and Global Change
IntroductionGround-based timber extraction is one of the most important harvesting methods used around the world, but it also causes negative effects on forest soils, to a degree that depends on machine mass, soil condition, and operational decisions ...
Mădălina Florina Presecan, Gabriel Osei Forkuo, Stelian Alexandru Borz   +2 more
doaj   +1 more source

Investigation on production rate and cost of Timberjack-450C in two skidding direction in combined harvesting system [PDF]

تحقیقات جنگل و صنوبر ایران, 2007
Managers of logging operation are faced with profit reduction due to rapid increases in equipment costs, rapid depreciation of equipment and changing logging systems from harvesting the large trees to the smaller ones.
Mahtab Pir Bavaghar, Hooshang Sobhani, Jahangir Feghhi, Ali Asghar Darvishsefat, Mohammad Reza Marvi- Mohajer   +4 more
doaj  

PRODUKTIVITAS DAN BIAYA PENYARADAN KAYU DENGAN KERBAU DI JAMBI

Jurnal Penelitian Hasil Hutan (Journal of Forest Products Research), 2017
An investigation on productivity and log­skidding cost using buffalo (Bubalus bubalis) was carried out at the area of lnhutani V in Jambi in 1999. The objective is to get reliable information about such productivity and cost. Connected with this purpose,
Dulsalam Dulsalam, Sukadaryati Sukadaryati   +1 more
doaj  

Productivity of C Holder 870 F tractor with double drum winch Igland 4002 in thinning beech stands

Croatian Journal of Forest Engineering, 2006
Research of productivity of C Holder 870 F tractor in thinning beech stands was performed in the area of Forest Administration Bjelovar, Forest Office Velika Pisanica in the compartment 87a of the management unit Bilo Jezero.
Željko Zečić, Ante P. B. Krpan, Stjepan Vukušić   +2 more
doaj   +2 more sources

Productivity and Time Consumption of Timber Extraction with a Grapple Skidder in Selected Pine Stands

Croatian Journal of Forest Engineering, 2017
This paper presents the results of the study on work time and productivity of the John Deere 548G-III grapple skidder operating in pine stands on flat terrain.
Arkadiusz Stańczykiewicz, Grzegorz Szewczyk, Dariusz Kulak   +2 more
doaj  

Assesment of Optimum Timber Extraction Methods Using Geographic Information System-Based Multi-criteria Decision Support Method

Forestist
Timber extraction is a time-consuming and difficult stage of producing the wood-based forest products, involving economic and ecological sensitivity. In this study, it was aimed to determine the optimum extraction methods in terms of productivity and ...
İnanç Taş, Abdullah Emin Akay, Mehmet Eker, Selçuk Gümüş, Murat Demir, H. Hulusi Acar, Mehmet Özdemir   +6 more
doaj   +1 more source

Productivity model and cost of steel tracked skidder LTT-100A in downward skidding (Case study: Research and educational forest of University of Tarbiat Modares) [PDF]

مجله جنگل ایران, 2012
Nowadays, with mechanization development, evaluation of machine productivity and calculation of average cost of skidding for each hour and each cubic meter is necessary to compare their efficiency.
doaj  

A Damage Prediction Model for Quantity Loss of Skidded Spruce Logs during Ground Base Skidding in North Eastern Turkey

Croatian Journal of Forest Engineering, 2009
In Turkey ground base skidding method is frequently used to extract log material. Physical damages occurring on the skidded log during ground based skidding cause quality and quantity loss of the log.
H. Hulusi Acar, Saliha Unver
doaj  

Time Consumption of Skidding in Mature Stands Performed by Winches Powered by Farm Tractor

Croatian Journal of Forest Engineering, 2013
The aim of the present research was to determine the characteristics of time consumption in skidding by winch. The research was conducted in pine, fir, spruce and beech mature stands.
Grzegorz Szewczyk, Janusz M. Sowa
doaj