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Gustavsson, Kent, 2013. Utvärdering av produktionsrapporterad volym för contorta. First cycle, G2E. Skinnskatteberg: SLU, School for Forest Management

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Abstract

The background to this study is that the forest company, Holmen, has found large discrepancies between harvested volume and the measured volume at the industry. Factors like bark features, breakage, double tops, bends and stem damages was noted, and all stems were measured manually. Hypothesis testing with the method "random in pairs" were used to examine whether the harvester measured values significantly differed from the manually measured.
The result of a properly calibrated harvester shows in average underestimation of the volume with Skogforsk Pine as a bark function. This means that the harvester isn´t the reason why the volume measured in the industry is lower, the fault is elsewhere. The study also indicates a need for a unique bark function for logepole pine.

Main title:Utvärdering av produktionsrapporterad volym för contorta
Authors:Gustavsson, Kent
Supervisor:Stenhag, Staffan
Examiner:Sundstedt, Eric
Series:Examensarbete / SLU, Skogsmästarprogrammet
Volume/Sequential designation:2013:07
Year of Publication:2013
Level and depth descriptor:First cycle, G2E
Student's programme affiliation:SY002 Forest Management - Bachelor's Programme 180 HEC
Department:(S) > School for Forest Management
Keywords:Barkfunktion, Avverkning, Virkesförråd
URN:NBN:urn:nbn:se:slu:epsilon-s-2816
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-s-2816
Subjects:Forestry - General aspects
Forestry production
Language:Swedish
Deposited On:21 Oct 2013 14:45
Metadata Last Modified:21 Oct 2013 14:45

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