Utvärdering av produktionsrapporterad volym för contorta
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 testi...
| Autor principal: | |
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| Formato: | M2 |
| Lenguaje: | sueco Inglés |
| Publicado: |
SLU/School for Forest Management
2013
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| Materias: |
| _version_ | 1855570966744137728 |
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| author | Gustavsson, Kent |
| author_browse | Gustavsson, Kent |
| author_facet | Gustavsson, Kent |
| author_sort | Gustavsson, Kent |
| collection | Epsilon Archive for Student Projects |
| description | 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. |
| format | M2 |
| id | RepoSLU6157 |
| institution | Swedish University of Agricultural Sciences |
| language | swe Inglés |
| publishDate | 2013 |
| publishDateSort | 2013 |
| publisher | SLU/School for Forest Management |
| publisherStr | SLU/School for Forest Management |
| record_format | eprints |
| spelling | RepoSLU61572013-10-21T14:45:54Z Utvärdering av produktionsrapporterad volym för contorta Evaluation of productionreported Lodgepole Pine Gustavsson, Kent Barkfunktion Avverkning Virkesförråd 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. SLU/School for Forest Management 2013 M2 swe eng https://stud.epsilon.slu.se/6157/ |
| spellingShingle | Barkfunktion Avverkning Virkesförråd Gustavsson, Kent Utvärdering av produktionsrapporterad volym för contorta |
| title | Utvärdering av produktionsrapporterad volym för contorta |
| title_full | Utvärdering av produktionsrapporterad volym för contorta |
| title_fullStr | Utvärdering av produktionsrapporterad volym för contorta |
| title_full_unstemmed | Utvärdering av produktionsrapporterad volym för contorta |
| title_short | Utvärdering av produktionsrapporterad volym för contorta |
| title_sort | utvärdering av produktionsrapporterad volym för contorta |
| topic | Barkfunktion Avverkning Virkesförråd |