Forskning: Fler gamla skogar behövs

EKOSYSTEMTJÄNSTER Att gammal skog ger mer bär, vilt och rekreationsmöjligheter har nog de flesta haft på känn. Men nu är det bevisat i en stor studie, som omfattar data från 4000 platser i Sverige.
Studien pekar också på att klimatförändringar kan få betydelse.

Forskning: Fler gamla skogar behövs
Micael Jonsson. Foto: Yasmine Karlsmo Kindlund

I en omfattande studie har forskare behandlat data från SLU:s stora databas Riksskogstaxeringen. Där finns information om bland annat virkesmängd, vegetation och markförhållanden från 20 000 platser i Sverige. Mängden data är enorm, och forskarna, som finns vid Umeå universitet, SLU och Göteborgs universitet, har valt ut 4 000 platser spridda över landet till sin studie.

Någonting är fel

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– Databasen är väldigt underanvänd inom forskningen. Men det är så mycket data så det kräver mycket jobb att få ordning på den, säger Micael Jonsson, Umeå universitet.

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