Effekter av älgbetning på tallens virkesegeskaper

The effect of moose grazing on wood properties in Scots pine

Document identifier: oai:dalea.du.se:1961
Keyword: Pinus sylvestris, Tall, Virkesskador, Viltbetning, Virkesegenskaper, Virkeskvalitet Scots pine, Browsing, Grazing, Damage, Wood injuries, Wood properties, Wood quality
Publication year: 2001
Relevant Sustainable Development Goals (SDGs):
SDG 15 Life on landSDG 3 Good health and wellbeingSDG 2 Zero hunger
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An experimental field trial in Scots pine (Pinus sylvestris) was doscontinued due to serious damage caused by browsing in 1980. All damages were at that time registered in respect to type and extent. In 1999-2000 a sample of trees were felled and wood properties were examined and photographs were taken of logs and boards. In total 99 logs were examined. Moose browsing caused serious injuries on the wood. The injuries were partly hidden and many logs seemed to be undamaged before sawing. However, under the undamaged surface the wood was contaminated by inlayed bark, dead wood, resin and discoloration. Severe plant browsing increased the wood damages but even small injuries on the plant caused serious damage on the wood. The economic consequences of log injuries can be reduced if the sawing pattern is performed in respect to the damage. During 1975-1985 the population of moose in Sweden was higher then ever before. As the moose normally eats pine in the winter season it is obvious that a long-term effect on wood properties occurs when the moose population is high. Though, the grazing can be reduced by silviculture methods adapted to the moose behavious.


U. Karlmats

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N. Pettersson

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