Holmen views its own forests as a strategically important resource. Forest growth and removals of wood may increase by around 25% over the next 30 years, according to an extensive study.

The need for forest raw material is increasing. More and more wood is being used as building material and energy raw material. Holmen is meeting the increased need for forest raw material by increasing wood production in its own forests. An extensive study we have conducted in cooperation with Skogforsk (the Forestry Research Institute of Sweden) shows that growth may increase by 25% over the next 30 years. A number of different measures make this possible. 


  • Plant improved seedlings

Crossing trees with positive characteristics results in improved seeds that provide seedlings with the favourable characteristics of the parent trees. Growth effect: 3.5% per year


  • Clean out forest ditches

Sludge builds up in forest ditches over the course of time, so that they lose their original function. Cleaning out forest ditches is a simple and effective way of increasing growth in the forests. Ditches should be cleaned out every 30 years. Growth effect: 2.5% per year


  • Fertilise suitable stands

When you fertilise the forest, the mean stem volume of the tree increases, which results in higher wood value and lower felling costs. The increase in growth after forest fertilisation is around 13–20 cubic metres standing volume per hectare over a period of ten years. Growth effect: 2.0% per year


  • Treat stumps against root rot

Root rot, particularly in spruce, affects forestry throughout Sweden. The damage can be prevented by winter-felling or treating the stumps with the biocontrol agent Phlebiopsis gigantea during other seasons. Growth effect: 2.0% per year


  • Plant more lodgepole pine

Lodgepole pine may be planted north of 60 degrees latitude under current rules. Regardless of soil quality, lodgepole pine produces approximately 20% more than improved Scots pine. The difference compared with unimproved Scots pine is approximately 36%. Growth effect: 3.5% per year


  • Keep the elk population at a reasonable level

Elk damage accumulates over 10-20 years. The damage means that the quality of the wood is reduced and growth decreases. Keeping the elk population at a reasonable level contributes to forests with greater growth potential. Growth effect: 2.5% per year


  • Carry out cleaning early

Cleaning a good investment. Although it constitutes a cost today, it leads to a better net result in the future. This is already apparent in the first thinning, but it is particularly evident the day clear-cutting is carried out in the forest. Growth effect: 0.5% per year


  • Be sure to regenerate

Shorter period of bare ground. By shortening the period of bare ground (from felling to planting), production is increased by 2.5–5 m3 standing volume per hectare over a cycle. Improved soil treatment gives better results as a result of improved plant survival. Pine weevil damage. Rapid establishment reduces the damage caused by pine weevils. The right seedlings mean that initial growth increases. Growth effect: 5.0% per year


  • SE seedlings in the longer term

SE seedlings are seedlings bred by somatic embryogenesis. Commercial seedlings may be available at the earliest in ten years. Growth effect: 3.0% per year

Increased forest growth in 40 years

More wood replacing products
with adverse climate impact

Holmen AB, P.O. Box 5407, SE-114 84 Stockholm, Sweden.

Visiting address: Strandvägen 1, Stockholm.

Tel: +46 8 666 21 00   E-mail: info@holmen.com

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