Photo: Jami Suojanen

Forests

The city of Riihimäki owns a total of approximately 1049 hectares of forest, of which 449 hectares are classified as urban forest and approximately 600 hectares as economic forest. A new forest plan was completed for the city in 2021, which is valid until 2031. The plan guides the management of forests and it contains management recommendations by forest pattern for forests owned by the city.

Forests are managed with biodiversity, safety and recreational and landscape values in mind, regardless of whether the forest is classified as a recreational or commercial forest. We try to avoid clear-cutting, but for example, there is no other option in a forest badly destroyed by a book printer.

We react to forest destruction

The bookworm is a spruce pest, the damage it causes has become more common in Finland in recent years. In the forests of the city of Riihimäki, a letterpress has also been observed, and measures have been taken and will be taken to combat it. For example, in Räätykänmäki, south of Koppelintie, a 2023-hectare forest had to be cleared in the spring winter of 3,2 due to the destruction of the typewriter.

Decaying trees are left for the sake of biodiversity

In connection with forest management activities, the city of Riihimäki tries to leave rotting wood in the forest, either on the forest floor as ground wood or as artificial beech trees as vertical rotting wood. Depending on the location, either whole trees, crowns, branches or parts of the trunk can be left as rotten wood. Wood material of all sizes, such as rotting wood, is important for biodiversity. Different species of fungi begin to rot the wood left in the forest, insects use mushroom mycelium for food, and birds in turn peck insects for food.

Continuous cover forestry

In the next few years, we aim to implement the forest management plan in order of urgency. Picking, thinning and small-hole felling will be carried out, thus ensuring the birth of a new generation of trees in the forests. In this way, forests can be managed with continuous cover and clear cutting can be avoided. The aim is to diversify forests by planting and replanting different tree species, breaking one-sided tree species structures.

Tell us your wishes in the feedback service

The city of Riihimäki's goal is to manage forests openly, taking into account the needs and wishes of the municipalities in the management of forests. The best way to influence and give feedback on forest management is In the feedback service of the city of Riihimäki.

The city of Riihimäki does not sell or give firewood.

The City of Riihimäki is carrying out forest management measures in accordance with the forest management plan in the area demarcated on the map, forest blocks 300, 303, 277, 276, 302, 304, 281, 279, 280 and 232. The measures have a valid landscape work permit (694-2025-36).

Forest pattern 303: Spruce-dominated mature forest stand on a hill. Printer's block. Picking/thinning is being carried out. The purpose of the measure is to improve the vitality of the forest and remove trees that pose a danger.

Forest patterns 300 and 276: Narrow strips of young nursery forest along the new Karhintie road. The strips will be thinned out to create a neat growth space.

Forest pattern 277: Small young birch-dominated nursery forest. Thinning is being carried out on the pattern.

Forest pattern 302: Spruce-dominated mature nursery stand. Clearing/thinning is carried out, the purpose of which is to remove trees in poor condition and dangerous, and to create growth space.

Forest patterns 304, 281, 279 and 280: Small patterns among settlements. Check the patterns for trees in poor condition and fell them if necessary. Selective felling/removal of individual trees.

Forest patterns 232: Young birch-dominated nursery stand. Thinning is being carried out to create growth space in the forest.

In connection with the measure, native trees will be left in the forest to promote biodiversity.

The construction site will be completed in early 2026.
The City of Riihimäki is carrying out forest management measures in accordance with the forest management plan in the area demarcated on the map, forest blocks 688, 704 and 703. The measures have a valid landscape work permit (694-2025-36).

Thinning will be carried out in accordance with the forest management plan for three young birch-dominated nursery stands.

In connection with the measure, native trees will be left in the forest to promote biodiversity.

The construction site will be carried out during the winter season 25-26 and will begin in the autumn with preliminary excavation.

See the location of the construction site on the Riihimäki map service (kartta.riihimaki.fi).

The City of Riihimäki is carrying out forest management measures in accordance with the forest management plan in the area demarcated on the map, forest blocks 375, 377, 380, 379 and 378. The measures have a valid landscape work permit (694-2025-36).

Light selective felling and small tree maintenance will be carried out on the figures. The figures are affected by bookworm damage, especially figure 375. The purpose of the measure is to remove trees that pose a danger and create growth space for a new generation of trees.

In connection with the measure, native trees will be left in the forest to promote biodiversity.

The construction site will be carried out during the winter season 25-26 and will begin in the autumn with preliminary excavation.

See the location of the construction site on the Riihimäki map service (kartta.riihimaki.fi).
The City of Riihimäki is carrying out forest management measures in accordance with the forest management plan in the area demarcated on the map, forest block 169. The measures have a valid landscape work permit (694-2025-36).

The small trees in the pattern are being maintained and trees in poor condition are being removed. The pattern includes spruces killed by the printer. The purpose of the measures is to create growth space for vigorous individuals in the understory, and to remove trees that pose a danger.

In connection with the measure, native trees will be left in the forest to promote biodiversity.

The construction site will be carried out during the winter season 25-26 and will begin in the autumn with preliminary excavation.

See the location of the construction site on the Riihimäki map service (kartta.riihimaki.fi).
The City of Riihimäki is carrying out forest management measures in accordance with the forest management plan in the area demarcated on the map, forest blocks 198, 197 and 199. The measures have a valid landscape work permit (694-2025-36).

The small trees in the patterns are managed and light harvesting/thinning is carried out. The purpose of the measures is to loosen the dense forest and create space for younger trees to ensure continuous cover.

In connection with the measure, native trees will be left in the forest to promote biodiversity.

The construction site will be carried out during the winter season 25-26 and will begin in the autumn with preliminary excavation.

See the location of the construction site on the Riihimäki map service (kartta.riihimaki.fi).
The City of Riihimäki is carrying out forest management measures in accordance with the forest management plan in the area demarcated on the map, forest block 460. The measures have a valid landscape work permit (694-2025-36).

Light selective felling and small tree maintenance will be carried out on the pattern. The purpose of the measures is to improve the vitality of the stand and create space for a new generation of trees.

In connection with the measure, native trees will be left in the forest to promote biodiversity.

The construction site will be carried out during the winter season 25-26 and will begin in the autumn with preliminary excavation.

See the location of the construction site on the Riihimäki map service (kartta.riihimaki.fi).
The City of Riihimäki is carrying out forest management measures in accordance with the forest management plan in the area demarcated on the map, forest block 558. The measures have a valid landscape work permit (694-2025-36).

Thinning and small tree management are carried out in dense forests. The purpose of the measure is to create growth space for a new generation of trees and promote the vitality of the forest.

In connection with the measure, native trees will be left in the forest to promote biodiversity.

The construction site will be carried out during the winter season 25-26 and will begin in the autumn with preliminary excavation.

See the location of the construction site on the Riihimäki map service (kartta.riihimaki.fi).
The City of Riihimäki is carrying out forest management measures in accordance with the forest management plan in the area delimited on the map, forest block 619. The measures have a valid landscape work permit (694-2025-81).

The small trees in the pattern are being managed and large trees in poor condition are being removed. The pattern has a few dead spruces and aspens. The purpose of the measures is to fell dangerous trees and at the same time manage the forest with light selective felling and small tree management, creating growth space for a new generation of trees.

In connection with the measure, native trees will be left in the forest to promote biodiversity.

The construction site will be completed in early 2026.
The City of Riihimäki is carrying out forest management measures in accordance with the forest management plan in the area demarcated on the map, forest blocks 108, 225, 110 and 110.1. The measures have a valid landscape work permit (694-2025-36).

Figure 108, dense young birch-dominated forest, Figure 110, young aspen-dominated forest, Figure 225, dense spruce-dominated forest and Figure 110.1, dense mixed forest. Thinning and small-tree management are carried out on the figures, with the aim of creating growth space in the forest and removing trees in poor condition.

In connection with the measure, native trees will be left in the forest to promote biodiversity.

The construction site will be completed in early 2026.