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Quality and yield of pulpwood in drained peatland forests: Pulpwood properties of Scots pine in stands of first commercial thinnings

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dc.contributor.author Varhimo, Antero en
dc.contributor.author Kojola, Soili en
dc.contributor.author Penttilä, Timo en
dc.contributor.author Laiho, Raija en
dc.date.accessioned 2006-06-14T10:37:07Z en
dc.date.accessioned 2009-06-17T14:05:12Z
dc.date.available 2006-06-14T10:37:07Z en
dc.date.available 2009-06-17T14:05:12Z
dc.date.issued 2003 en
dc.identifier.citation Silva Fennica 37: 343-357 en
dc.identifier.uri http://hdl.handle.net/1975/446
dc.description.abstract The inherent structural dynamics of drained peatland forests may result in a great variation in various wood and fi ber properties. We examined variation in fi ber and pulp properties i) among stands, ii) among trees within stands, and iii) within trees in young stands dominated by Scots pine (Pinus sylvestris L.). The stands, selected to cover a maximal range of the potential variation, were all at a stage of development where the fi rst commercial thinnings would be feasible. Differences in the processability of the thinning removals were small. In similar kraft cooking conditions, a 5-unit variation in the kappa number of unbleached pulp was observed among the stands. Stand origin had no effect on pulp bleaching. The wood formed prior to drainage had a higher density, shorter fi bers, was slightly slower delignifi ed by cooking, and its yield was slightly lower than that of post-drainage wood. These properties, except for high density, are typical for juvenile wood in general, and at stand level they did not correlate with the proportion of pre-drainage wood. When the variation in fi ber and pulp properties was broken down into its components, most of it was derived from tree-level in all the cases. On average, the fi ber and pulp properties did not differ from those observed for fi rst-thinning pulpwood from upland sites. Consequently, peatland-grown pulpwood may be mixed with other pulpwood in industrial processes. It would probably be best suited as the raw material for pulps with high bonding requirements, e.g. in the top ply of multi-ply board grades or in some specialty grades. en
dc.format.extent 124833 bytes en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.subject fiber en
dc.subject peatland en
dc.subject Pinus sylvestris en
dc.subject pulping en
dc.subject pulpwood en
dc.subject silviculture en
dc.subject thinning en
dc.title Quality and yield of pulpwood in drained peatland forests: Pulpwood properties of Scots pine in stands of first commercial thinnings en
dc.type Article en
dc.identifier.laitoskoodi 867 fi
dc.creator.corporateName Metsäekologian laitos fi
dc.creator.corporateName Department of Forest Ecology en
dc.creator.corporateName Skogsekologi, Institutionen för sv

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