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Rönnqvist, Andreas, 2011. Produktivitetseffekter av flerträdshantering. First cycle, G2E. Skinnskatteberg: SLU, School for Forest Management



The main purpose of this study is to investigate the productivity effects of multiple tree handling in thinnings. Other important elements have been to investigate in which extent multi-tree handling is used in stands with different stem volumes and the impact of collecting partially delimbed fuelwood assortments has on harvesting performance.
The study is based on data from thinnings in Sydved and contractors' operating activities. Collection and compilation of operating schedules, number of stems and surveyed volumes from several contractors and a large number of executed orders underlying the results.
Multiple tree handling is used to a much greater extent at lower average stem volumes. Prediction models for productivity of the multiple-tree handling harvesters in the study differ from the productivity models for single-tree handling. In the model developed in this study productivity is not as dependent of stem volume as reference models. Productivity varies greatly between different machines and drivers, which in itself can be a basis to approach the training of drivers. Collection of fuelwood assortments that only needs to be partially delimbed have a certain positive impact on both the proportion of multi managed trees and productivity.

Main title:Produktivitetseffekter av flerträdshantering
Authors:Rönnqvist, Andreas
Supervisor:Norman, Lars
Examiner:Sundstedt, Erik
Series:Examensarbete / SLU, Skogsmästarprogrammet
Volume/Sequential designation:2011:08
Year of Publication:2011
Level and depth descriptor:First cycle, G2E
Student's programme affiliation:SY002 Forest Management - Bachelor's Programme 180 HEC
Supervising department:(S) > School for Forest Management
Keywords:Gallring, Flerträd, Skördare
Permanent URL:
Subject. Use of subject categories until 2023-04-30.:Forestry production
Deposited On:26 May 2011 11:09
Metadata Last Modified:07 Oct 2012 09:37

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