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
[Research article]
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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 | ||||
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Title: | Simulation of harvester productivity in selective and boom-corridor thinning of young forests | ||||
Series Name/Journal: | Scandinavian journal of forest research | ||||
Year of publishing : | 2012 | ||||
Volume: | 27 | ||||
Number: | 1 | ||||
Page range: | 56-73 | ||||
Publisher: | Taylor & Francis | ||||
ISSN: | 0282-7581 | ||||
Language: | English | ||||
Publication Type: | Research 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: |
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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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