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Securing the Sustainability Forest Soil Functions via Optimized Harvesting Technologies

Project Leader
Katzensteiner Klaus, Project Leader
Waldfonds - DAFNE 90 - Maßnahme 8
Type of Research
Applied Research
Project partners
Federal Forest Office (BFW), Seckendorff-Gudent-Weg 8, 1131 Wien, Austria.
Contact person: Barbara Kitzler;
Function of the Project Partner: Partner
Scheidl Christian, Sub Projectleader
Kühmaier Martin, Sub Projectleader
Rewald Boris, Sub Projectleader
Behringer Maximilian, Project Staff
Gasser Lisa Theresa, Project Staff
Fitz Maximilian, Project Staff
BOKU Research Units
Institute of Forest Ecology
Institute of Forest Engineering
Institute of Mountain Risk Engineering
Forest management in climate change — Interaction between timber harvesting and soil functions (HoBo)
HoBo - Function of the soil in the water balance - Soil physics and soil hydrology (HoBo-AP3)
Funded by
Federal Ministry of Agriculture, Regions and Tourism, Stubenring 1, 1010 Wien, Austria
The mechanisation of forest managementis of great importance for the sustainable provision of the renewable raw material wood. The coordination of the technology with the ecological framework conditions is decisive for the care of the utilisation. The particularly productive, often ‘heavy’ soils of the flysch and molasse zone are susceptible to compaction and therefore pose a challenge for mechanisation. Soil compaction by driving changes the soil structure and thus the infiltration capacity, the plant-available water storage capacity, the water balance of the ecosystem and the soil air balance. Site properties such as rootability, tree species suitability, productivity, but also other soil functions such as the source and sink effect of the soil for greenhouse gases or the habitatfunction for soil organisms are closely related to the soil structure. A site-adapted use of technology is therefore a basis for forest management on soils susceptible to compaction. The aim of this projectis to create a database for the assessment of the effects of different wood harvesting technologies on forest sites with compaction-prone soils for the currently prevailing and expected future climatic conditions. On the basis of documented timber harvesting operations of the lastten years and the utilisations carried out under controlled conditions during the project period, the effects of differenttechnologies used (type, design) under defined soil conditions (water content, soil frozen or not, etc.) are examined. The indicators allow a statement on the impact of different harvesting measures on soil
functions, the remaining stand as well as regeneration. Water availability, controlled by the ratio of surface runoff to infiltration, water storage capacity and root penetration of the soil, is of particular importance for the following stand. This comparison is intended to provide forest managers with a practical decision matrix that clarifies the opportunities and risks of the various technologies in additi‐
on to the expected harvesting costs. The aim is to derive recommendations for the choice of the most suitable harvesting technology depending on location and weather conditions. Demonstration plots will be established for education and further raining.
Forest ecology; Soil science;
biodiversity; soil gas exchange; soil compaction; ecophysiology; water budget;

Kühmaier, M; Grünberg, J; Schranz, T (2023): Standortgerechte Holzernte im Klimawandel.

Tagung der Forstlichen Arbeitslehrenden Österreichs, 05.10.2023 - 06.10.2023, Wien

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