Författare Metsähallitus
Utgivare Metsähallitus, Vantaa, 2006
Sidantal 4 s.
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The Koivusuo Strict Nature Reserve, established in 1982, is with its forests and mires the most valuable part of the Koitajoki Natura 2000 area. The mire conservation areas of Ristisuo and Ruosmesuo-Hanhisuo were established in 1985 and 1988 respectively. In addition, there are areas that were included in the Old-Growth Forest Conservation Programme in the 1990s.