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Målbildsuppfyllelse vid ungskogsröjning i kantzoner mot sjöar och vattendrag i Västra Götalands Jönköpings och Hallands län
Linnaeus University, Faculty of Technology, Department of Forestry and Wood Technology.
Linnaeus University, Faculty of Technology, Department of Forestry and Wood Technology.
2018 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Goal fulfillment, in edge zones along rivers and lakes in pre-commercial thinning in the counties of Västra Götaland, Jönköping and Halland (English)
Abstract [en]

The study examined the goal fulfillment in edge zones along rivers and lakes in precommercial thinning stands based on national targets which is the basis for Swedish forestry. Pre-commercial thinning has a major impact on the future forest, as it determines how the tree species distribution will turn out. The study was conducted as a field study in February 2018 based on 30 precommercial thinning sites, aged 5–15 years, in connection to rivers and / or lakes. Of these, 25 rivers and five lakes were surveyed. 22 of the surveyed stands were privately owned and 8 were company-owned forests. The edge zones had between 0–100% shadowing of the water surface. Few sites with soil damage were detected and also a varying amount of tree species and deadwood. The most common deadwood was standing and lying dead wood with a diameter of 10 cm for both company and privately-owned forests. The percentage of number of stems per ha of deciduous trees in the edge zones was 52%, Norway spruce 41% and Scots pine 7% respectively. Within the edge zones, the sample areas closest to rivers and lakes had 55% of number of stems per ha deciduous trees, 40% spruce and 6% pine. In the sample areas closest to the stand, the number of deciduous trees was 48%, spruce 44% and pine 9%. Company-owned forests had more spruce (59%) along the waterfront compared to privately owned forests, who had a significantly higher proportion of deciduous trees (61%). By actively working with the composition of the edge zones, creating deadwood, saving trees for shadow and by thinning dense areas, particularly spruce-dominated, increased biodiversity can be achieved. Dense, spruce-dominated areas are those areas where the goal fulfillment is insufficient in many places.

Place, publisher, year, edition, pages
2018. , p. 34
Keywords [en]
Edgezones, Pre-commercial thinning, Deciduous trees, Deadwood
National Category
Forest Science
Identifiers
URN: urn:nbn:se:lnu:diva-76621OAI: oai:DiVA.org:lnu-76621DiVA, id: diva2:1230325
External cooperation
Skogsstyrelsen Borås
Subject / course
Skogs- och träteknik
Educational program
Forest Production and Wood utilization Programme, 180 credits
Presentation
2018-05-31, M1051, Linneuniversitetet, Växjö, 12:51 (Swedish)
Supervisors
Examiners
Available from: 2018-07-04 Created: 2018-07-03 Last updated: 2018-07-04Bibliographically approved

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CiteExportLink to record
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