Machine traffic and timber skidding significantly affect the soil surface and soil properties. The effects are mostly negative and result in soil erosion, worsening of soil properties and inhibition of the growth of roots and soil organisms. In this study, we evaluated forest soil damage caused by the HSM 805 HD wheeled skidder during timber skidding in selected forest stands in the School Fore...

The optimum road spacing has been studied by many researches. It is an important step of forest road network planning. The goals of this study are determining the optimum road spacing in Kheiroudkenar forest of Nowshahr in Northern Iran and study of effect of kind of skidder on skidding cost and road spacing. Continues time study method was used to determine the production rate of TAF and Timbe...

the optimum road spacing has been studied by many researches. it is an important step of forest road network planning. the goals of this study are determining the optimum road spacing in kheiroudkenar forest of nowshahr in northern iran and study of effect of kind of skidder on skidding cost and road spacing. continues time study method was used to determine the production rate of taf and timbe...

harvesting of timber using ground based machinery is still a common practice around the world. track and road building, and movement of machinery during harvesting operations cause soil disturbance. therefore the aim of this study was to investigate the change in soil properties after logging operation on skid trails (2 years and 7 years after logging) and compare disturbed soil properties with...

The aim of the proposed study was to show fuel consumption various log skidders and create models for estimating different forwarders operating in cutting areas with tree size characteristics. Production tests forwarders' operation at have been carried out. In experimental studies, from countries were used. particular, forwarders: Amkodor-2682 (Belarus), Komatsu 840 (Japan), TB-1M-16A (Russia)....

For forest machines (skidders, forwarders), due to the peculiarities of work cycles and a wide range changes in resistance movement, power plant with heat engine most time operates non-optimal mode. It is proposed overcome this disadvantage by using an active trailer link. The issues features use trailers as part road trains are considered. A variable base was chosen basis, popular widespread f...