نتایج جستجو برای: skidders

تعداد نتایج: 49  

Journal: :Journal of agricultural engineering 2023

Salvage logging is increasing in Central Europe because of the growth severe meteorological events, and timber harvesting these conditions challenging terms both productivity performances safety operations. In recent years, with increase natural calamities, several researchers studied machinery regarding salvage carried out by ground-based systems. fact, a common post-disturbance management app...

2013
Bobette E. Jones Monika Krupa Kenneth W. Tate

The removal of conifers through commercial timber harvesting has been successful in restoring aspen, however many aspen stands are located near streams, and there are concerns about potential aquatic ecosystem impairment. We examined the effects of management-scale conifer removal from aspen stands located adjacent to streams on water quality, solar radiation, canopy cover, temperature, aquatic...

Journal: :ecopersia 2011
berdimohammad agherkakli akbar najafi seyed hamidreza sadeghi

ground skidding on skid trails affects the physical properties of soil. the objective of this study was to evaluate changes in soil physical properties on skid trails formed due to traffic of metal-tracked skidders with regard to soil bulk density, total porosity, water content and penetration resistance. the studies were implemented on two levels of slope – 20% (sc2) – and three levels of traf...

2007
Darko Beuk Dubravko Horvat

Nacrtak This paper deals with the present status of forest management in the Republic of Croatia with a special reference to forests managed by the company »Hrvatske {ume« d.o.o. Zagreb, as well as to aims, tasks and methods of state-owned forest management, to conditions and trends in the number of the most significant forest machines used so far in forest harvesting. Also, the ways and activi...

 Forest soil compaction influenced by the use of skidders machineries, its power and weight, then causes changes on specific physical characteristics of soil. In most of the investigations, the negative effects of skidder traffic is reduction in growth of trees. The aim of this research was investigating the effects of number of skidder traffic in different skidding direction (uphill and downhi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان 1386

چکیده ندارد.

2018

Cut-to-length (CTL) timber harvesting technology currently accounts for approximately 90% of Caspian forests. The technology involves felling, branching, cross-cutting, and then the skidder carries the logs to a landing, where the timber is temporarily stored, sorted and assembled for transportation to the mill. Cut-to-length systems typically require less labor, less access road construction, ...

2018

Cut-to-length (CTL) timber harvesting technology currently accounts for approximately 90% of Caspian forests. The technology involves felling, branching, cross-cutting, and then the skidder carries the logs to a landing, where the timber is temporarily stored, sorted and assembled for transportation to the mill. Cut-to-length systems typically require less labor, less access road construction, ...

2018

Cut-to-length (CTL) timber harvesting technology currently accounts for approximately 90% of Caspian forests. The technology involves felling, branching, cross-cutting, and then the skidder carries the logs to a landing, where the timber is temporarily stored, sorted and assembled for transportation to the mill. Cut-to-length systems typically require less labor, less access road construction, ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید