Bergström, Dan
- Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences
Abstract
The objective of the study was to improve the knowledge of the effects of harvested tree size and density of undergrowth on the operational efficiency of a bundle-harvester in early fuel wood thinnings in the Nordics. There were no significant differences between treatments (clearing vs. no clearing) in the harvested and remaining stands' properties or in operational efficiency. The productivity was on average 3.1 OD t/PMH0(6.6 fresh t/PM0H; 15.1 bundles/PMH0) and was modeled by using the harvested stem volume as a single independent variable. The study provides complementary knowledge to earlier studies of the system's performance, especially for harvesting <30 dm³ stems. The productivity of the bundle-harvester was limited by the cutting efficiency and could probably be significantly increased by using a felling and bunching head that could cut and accumulate trees during continuous boom movements.
Keywords
pre-commercial thinning; productivity; Scots pine; bioenergy
Published in
Title: Forest engeneering : Making a positive contribution
Publisher: Institute of Forest Enginerering
Conference
48th FORMEC Symposium on Forestry Mechanization: Forest engeneering : Making a positive contribution
SLU Authors
Di Fulvio, Fulvio
- International Institute for Applied Systems Analysis (IIASA)
UKÄ Subject classification
Other Engineering and Technologies
Publication identifier
- ISBN: 978-3-900932-29-9
Permanent link to this page (URI)
https://res.slu.se/id/publ/68929