Biodiversity and conservation

12.6.2019 / Forest Facts
Brooks and small waterways are under special care in Finnish forestry. Photo: Anne Turunen

Safeguarding biodiversity is not only about strict protection

The nature values in Finnish forests have been extensively protected by excluding valuable forest areas from commercial use. Measured by the number and extent of such strictly protected forests, Finland is by far the leading country in Europe.

The 1990s saw the beginning of nature management in commercial forests to complement protection measures. The philosophy is that the softer the means used to manage commercial forests, the less need there will be in future to put them under strict protection.

Protection continues to be managed in both these ways: strictly protected forest reserves continue to be established, and new methods of nature management, supported by research, are employed in commercial forests.

The measures have been effective and, especially as regards nature management, have led to rapid changes. To take an example, the most recent assessment of endangered species of 2019 shows that the share of endangered forest species of all forest species assessed was the same as in the previous assessment from 2010 and less than the average in Finnish habitats. While it is true that the number of endangered species is the highest in forest habitats, the researchers point out that this is because the total number of forest species is the highest.

According to the researchers, the greatest single reason for the improved situation is the practice of leaving what are called retention trees on regeneration sites in commercial forests. The purpose is that in time, they shall fall down, die and decay, increasing the amount of decaying wood, which is important for endangered forest species.

The amount of decaying wood in commercial forests is currently somewhat under five cubic metres per hectare, and Natural Resources Institute Finland estimates that the figure will rise to an average of 20 cubic metres on productive forest land (growth categories of forestry land, click here) by 2065. Many researchers consider this to be sufficient for achieving the dynamics of a natural forest, even though a truly natural forest contains a great deal more decaying wood than this.

The practice of leaving retention trees has now been extended to thinnings. In this case they are called artificial snags, and are cut at a height of about 1.3 metres and left to decay.

Government decides about protection programmes

Strict forest protection has been implemented in Finland through nature conservation programmes in particular. These programmes are based on decisions by the Government, which specify the boundaries of areas to be protected.

In practice all these areas are removed from commercial use immediately after the Government decision, but they are regarded as protected only after they have been acquired by the state or a private nature reserve has been established for them. In certain cases the acquisition process has taken decades.

Many different protection programmes have been adopted in Finland, and they have interpreted the concepts of nature and protection values in a range of ways. Programmes implemented so far include state programmes to protect old-growth forests in southern and northern Finland, mires, waterfowl habitats, eskers, herb-rich forests, shore areas and also a programme for antiquities conservation.

The strict protection reserves are often located in distant areas of the country and in forests of low productivity in northern and eastern Finland. The principal gaps in the network of reserves are found in southern Finland. Still, the proportion of strictly protected areas in southern Finland is higher than the average in all European countries, excluding Sweden.

Metso programme for voluntary protection

Nature values in commercial forests are protected in many different ways. The Forest Act, for example, defines a number of habitats of special importance (read more here). The special qualities of these sites, often small in size, may not be deteriorated by forestry operations. In practice this means that they may not be interfered with. One type of these habitats are springs  with their vicinities, which are spared from logging.

The Best Practices for Sustainable Forest Management recommendations in commercial forests by the Tapio company are even stricter than the Act as regards the protection of nature values.

In 2014, an extension of the Forest Biodiversity Programme for Southern Finland, Metso for short, was adopted, and it will now run until 2025. Despite the name it is mainly aimed at improving the biodiversity of forests in south-west Lapland, Kainuu and areas south of them. The programme is based on protection that is voluntary for the forest owners.

Nature management is also included in forest certification. Almost 90 percent of Finnish commercial forests are certified under the PEFC system (Programme for the Endorsement of Forest certification) system. The certification criteria are clearly stricter than those included in legislation, and so it is safe to say that it is certification that determines the level of Finnish forestry in practice.

Among other things, forest certification improves the state of forest ecology in many ways. It is forest certification that requires the leaving of retention trees on regeneration sites.

Despite being voluntary for the forest owner in principle, forest certification is necessary in practice, if the timber is to be sold anywhere.
Some Finnish forests are also certified under another international system, the FSC (Forest Stewardship Council). Their area is about six percent of the total area of commercial forests.

Sources: Natural Resources Institute Finland, Ministry for Agriculture and Forestry, Ministry for the Environment

Updated: June, 2019

Hannes Mäntyranta

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