Description of remote control cable yarding systems and an evaluation of the Forestral Remote Control Grapple Yarding System
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منابع مشابه
Perspectives on Central European Cable Yarding Systems
Cable Yarding Technology has a long tradition in the Central European Alps. Outside Europe, sledge yarder technology became well known during the 1960's while the first European tower yarders were introduced during the 1970s. Although there has been much effort to improve yarding technology, only little is known about it outside Europe. The paper aims to present the state-of-the-art of both, ya...
متن کاملA Robust Productivity Model for Grapple Yarding in Fast-Growing Tree Plantations
New techniques have recently appeared that can extend the advantages of grapple yarding to fast-growing plantations. The most promising technique consists of an excavator-base un-guyed yarder equipped with new radio-controlled grapple carriages, fed by another excavator stationed on the cut-over. This system is very productive, avoids in-stand traffic, and removes operators from positions of hi...
متن کاملAnalysis of Accidents During Cable Yarding Operations in Austria 1998–2008
Nacrtak This paper deals with accidents in the period 1998 – 2008 reported during harvesting operations in ÖBf AG, Austria’s largest forest enterprise, with a focus on cable yarding. In total 1888 accidents were recorded with 8.7% of these associated with cable yarding activities. The overall accident rate amounted to 36 incidents per million cubic meter extracted by cable yarder. There was a c...
متن کاملEfficiency of Topping Trees in Cable Yarding Operations
The extraction of biomass and nutrients out of the forest is implicit to every harvest operation. In cable yarding, whole-tree harvesting (WTH) has become more prevalent in the last few decades and processing takes place at the roadside. There is a concern that WTH impairs site productivity due to nutrient removal. One option to increase the amount of biomass remaining in the stand is to top th...
متن کاملForest-floor Disturbance Reduces Chipmunk (Tamias spp.) Abundance Two Years after Variable-retention Harvest of Pacific Northwestern Forests
We evaluated the two-year effects of variable-retention harvest on chipmunk (Tamias spp.) abundance (N̂) and habitat in mature coniferous forests in western Oregon and Washington because wildlife responses to density/pattern of retained trees remain largely unknown. In a randomized complete-block design, six treatments were applied to 13-ha units at three sites (blocks): four retention levels of...
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تاریخ انتشار 2016