Biodiversity Index

Metsähallitus uses a biodiversity index to monitor the status of biodiversity on state lands. The index describes trends in structural features important for biodiversity, including the volume of decaying wood, as well as the impact of actions aiming to preserve and enhance biodiversity, such as preservation of ecological sites and restoration work.

The index shows trends in biodiversity

The biodiversity index comprises five indicators:

  • Status assessment of Natura 2000 land habitats
  • Consideration of ecological sites in fellings
  • Surface area of restoration measures (ha)
  • Volume of decaying wood (m³/ha)
  • Volume of mature aspens (m³/ha).

The index indicates whether biodiversity is deteriorating (1) or improving (5) on state-owned lands and in private nature reserves.

We aim for continuous improvement

The biodiversity index value was 3.82 in 2019 and 3.74 in 2018.

The biodiversity index and its development (on a scale of 1 to 5) on state-owned lands from 2017 to 2019.

Indicator 2017 2018 2019
Natura 2000 land habitat status3.893.903.90
Consideration of ecological sites in fellings4.524.875.00
Surface area of restoration measures (ha)3.73.814.06
Volume of decaying wood (m³/ha)2.302.132.13
Volume of mature aspens (m³/ha)3.404.004.00
BIODIVERSITY INDEX 3.56 3.74 3.82

Of all the sub-indexes in 2019, we had the best track record in consideration of ecological sites in fellings. The surface area of restoration measures was also larger than in the previous year, indicating a higher impact.

The lowest index value was registered in the volume of decaying wood. Improving this figure has been set as the goal for the following years.