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Simulation of harvester productivity in selective and boom-corridor thinning of young forests

Sängstuvall, Lars and Bergström, Dan and Lämås, Tomas and Nordfjell, Tomas (2012). Simulation of harvester productivity in selective and boom-corridor thinning of young forests. Scandinavian journal of forest research. 27:1, 56-73
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Official URL: http://dx.doi.org/10.1080/02827581.2011.628335

Abstract

Forest management practices may change in the future, due to increases in the extraction of forest fuel in first thinnings. Simulation models can be used to aid in developing new harvesting systems. We used such an approach to assess the productivity of innovative systems in various thinnings of young stands with wide ranges of mean breast height diameter (1.5–15.6 cm), stems per hectare (1000–19,100), and mean height (2.3–14.6 m).
The results show that selective multiple-tree-handling increases productivity by 20–46% compared to single-tree-handling. If the trees are cut in boom-corridors (10×1 or 2 m strips between strip roads), productivity increases up to 41%, compared to selective multiple-tree-handling. Moreover, if the trees are felled using area-based felling systems, productivity increases by 33–199%, compared to selective multiple-tree-handling. For any given harvesting intensity, productivity increased the most in the densest stands with small trees.
The results were used to derive time consumption functions. Comparisons with time study results suggest that our simulation model successfully mimicked productivity in real-life forest operations, hence the model and derived functions should be useful for cost calculations and evaluating forest management scenarios in diverse stands.

Authors/Creators:Sängstuvall, Lars and Bergström, Dan and Lämås, Tomas and Nordfjell, Tomas
Title:Simulation of harvester productivity in selective and boom-corridor thinning of young forests
Series/Journal:Scandinavian journal of forest research (0282-7581)
Year of publishing :2012
Volume:27
Number:1
Page range:56-73
Publisher:Taylor & Francis
ISSN:0282-7581
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Accepted version
Full Text Status:Public
Agris subject categories.:K Forestry > K10 Forestry production
P Natural resources > P06 Renewable energy resources
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
Keywords:bioenergy, forest fuel, geometric thinning, multiple-tree-handling, roundwood, single-tree-handling, tree sections, time consumption, whole-tree
URN:NBN:urn:nbn:se:slu:epsilon-e-772
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-772
Additional ID:
Type of IDID
DOI10.1080/02827581.2011.628335
ID Code:9304
Department:(S) > Dept. of Forest Resource Management
(NL, NJ) > Dept. of Forest Resource Management
External funders:Brattåsstiftelsen för skogsvetenskaplig forskning and Interreg IV
Deposited By: Skogsbiblioteket Umeå
Deposited On:13 Dec 2012 10:51
Metadata Last Modified:02 Dec 2014 10:53

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