Results 61 to 70 of about 566 (162)

Productivity, Costs and Residual Stand Damage of Timber Harvesting Methods in Scots Pine Stands with Extended Distance Between Skid Trails

open access: yesCroatian Journal of Forest Engineering : Journal for Theory and Application of Forestry Engineering
In forest operations, economic advantages can be obtained by increasing the distance between the skid trails. This protects soil by reducing the compacted area, while at the same time increasing the productive timber ground area. These advantages are offset by disadvantages, as fully mechanized timber harvesting is not possible and motor-manual felling
Jakob, Maximilian   +3 more
openaire   +1 more source

Optimisation of forest road network under principles of functionally integrated forest management

open access: yesJournal of Forest Science, 2003
A traditional approach to problems of the opening-up of forests has been based primarily on technical and economic aspects. It results particularly from the ground configuration and calculations of minimum costs for logging and transport operations ...
P. Hrůza
doaj   +1 more source

WORKING TIME, PRODUCTIVITY, AND COSTS OF MANUAL WOOD EXTRACTION IN PRIVATE FORESTS

open access: yesJurnal Belantara
Wood extraction using human power is a popular wood extraction technique in private forest harvesting in Indonesia. The method is used for transporting short logs over a short distance in flat or steep areas, which do not have adequate transport roads ...
ahmad budiaman   +2 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]

open access: yesمجله 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  

Influence of working conditions on overlapping of cutting and ground skidding in group work

open access: yesCroatian Journal of Forest Engineering, 2007
This research deals with the influence of working conditions on the duration of cutters participation in group work skidding. Two main theoretical assumptions were considered.
Anton Poje, Igor Potočnik
doaj  

Forest road planning considering road and skidding costs (Case study: Kheyrud Forest) [PDF]

open access: yesمجله جنگل ایران, 2011
Hyrcanian forests are the only forests designated for commercial timber production inIran. Ground-based skidding is the most common timber harvesting system used in these forests, but due to low road density (1-2m/ha), large parts of the forests are ...
doaj  

The efficiency of Backmund method for evaluation of forest road networks with regard to capabilities of wheeled skidders in ground skidding method [PDF]

open access: yesمجله جنگل ایران, 2009
Forestroad construction is the most costly operation in forest management. In order to choose the optimal variant with regard to costs and performance, it is necessary to evaluate road variants before construction.
K. Puya   +4 more
doaj  

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

open access: yesCroatian 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  

Balanceo de un sistema de cosecha mecanizado utilizando simulación de eventos discretos

open access: yesCiência Florestal, 2007
A mechanized harvest system was analysed, working in a radiata pine clear cut operation and compound by a feller buncher, a grapple skidder, a grapple processor and a three-wheeler. A Discrete – Event Simulation Model was built with the goal to balance
Pablo Aracena   +2 more
doaj  

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