Utveckling av kostnadseffektiv skogsföryngring
Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
According to 5§ in Swedish forestry act a new forest has to be established when the area’s tree production is on not acceptable levels. Site preparation is normally made after final felling in order to create a better regeneration environment. Today there are three leading ways to regenerate forests in Sweden: Natural regeneration with seed trees, seeding combined with site preparation and planting preceded by site preparation. Sveaskog Förvaltnings AB and SweTree Technologies AB have together developed a device named SeedPADTM to reduce the cost for reforestation. SeedPADTM is a unit where a highly germinated seed is placed together with nutrient rich substrate in a thin, cylindrical disc with paper on top and bottom. The advantage with SeedPADTM is primarily the reduced evaporation from the soil creating a moist environment for the seed. SeedPADTM could primarily replace direct seeding but could also replace the natural regeneration and planting. By developing a tool to that streamlines the task of placing SeedPADTM on forest lands, productivity can increase from today’s rate of 5 500/day to 14 000 pieces correctly placed per day. In addition, the new tools allows for placing of SeedPADTM in any weather condition. Compared to today’s cost of placing SeedPADTM at afforested sites, the developed tool provides a reduced labor cost of a minimum of 1 100 SEK ($130) per day.
Place, publisher, year, edition, pages
2015. , 55 p.
Teknik, skogsföryngring, seedpad, skogsplantering
IdentifiersURN: urn:nbn:se:ltu:diva-47328Local ID: 4e26ed9b-b0f2-4316-814f-3372792d34f0OAI: oai:DiVA.org:ltu-47328DiVA: diva2:1020648
Subject / course
Student thesis, at least 30 credits
Mechanical Engineering, master's level
Validerat; 20150616 (global_studentproject_submitter)2016-10-042016-10-04Bibliographically approved