Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2008
Authors
Anders Lunnan Lelde Vilkriste Gunnar Wilhelmsen Diana Mizaraite Antti Asikainen Dominik RöserAbstract
Bioenergy projects must be economically viable for the different actors in the value chain. Economic studies can contribute to the understanding of the competitive situation of bioenergy. Sustainability aspects, supply and demand aspects, regional cooperation and impacts and external effects are discussed. Recommendations for bioenergy policy to promote a more integrated market for biofuels in the Baltic Sea region is given
Authors
Hallvard Jensen Kimmo K. Kahilainen Per-Arne Amundsen Karl øystein Gjelland Anti Tuomaala Tommy Malinen Thomas BøhnAbstract
No abstract has been registered
Authors
Per Otto Flæte Kjell VadlaAbstract
Concern about environmental impacts of chemical wood preservatives has resulted in increased interest for natural wood durability. The natural durability of sapwood of most species is generally low, while heartwood can be more resistant to biodeterioration. For the sawmill industry various lumber products require certain diameters and lengths of the logs in addition to requirements for wood properties. When utilising the heartwood, it is therefore important to acquire information already in the forest about which trees that can be suitable for logs with a predefined heartwood diameter and length. The main objectives of this work was to study the variation in heartwood diameter along the stem of Scots pines (Pinus sylvestris L.), and to develop a model for predicting heartwood diameter profiles based on variables that can easily be measured in the forest.....
Abstract
No abstract has been registered
Authors
Peder GjerdrumAbstract
Cost and revenue related to kiln drying are described. A calculation model compatible with a sawmill\"s profit and loss account is suggested. Typical cost items for a Scandinavian sawmill and from European litterature are reported. Cost for shrinkage/distortion/quality losses and investment/depriciation and maintenance for kilns and other technical equipment. It is claimed that better models and intensified calculation will improve sawmill profitability.
Authors
Shaochen Xing Clarke Jihong LiuAbstract
No abstract has been registered
Authors
Tore SkrøppaAbstract
No abstract has been registered
Authors
Vegard Gundersen Lars Helge FrivoldAbstract
We reviewed 53 studies of forest landscape preferences carried out as quantitative surveys in Finland, Sweden and Norway and published between 1972 and 2006. Most of them were related to boreal coniferous forests in which even-aged forestry had been the rule. There was a great diversity in survey designs, ranging from nation-wide or regional surveys where target populations and sampling frames were clearly defined, to studies where neither a target population nor a sampling frame could be identified. The latter type of surveys, however, often had a high validity, with measurements made either in the forest or indoors by use of colour slides or advanced digital imaging. A common feature was that people¿s preferences for a forest stand increased with increasing tree size and advancing stage of stand development. Some surveys indicated that the public tended to give high scores to irregular stands with a mixture of trees of different sizes, but on the other hand, a feeling of accessibility and provision of a view was also very important. Large clear-cuts and obvious traces from forest operations were little appreciated. Trained foresters were more positive to clear-cuts than the general population. Few studies included virgin stands, and those that did mostly found low scores for unmanaged forests. Preferences appeared to be fairly stable over time. Elderly or handicapped people, and children and young adolescents, were strongly underrepresented in the surveys.
Authors
Nicholas Clarke Nathalie Cools John Derome Kirsti Derome Bruno De Vos Alfred Fuerst Anna Kowalska Rosario Mosello Gabriele A. Tartari Erwin Ulrich Nils KönigAbstract
Over the past years considerable efforts have been made to improve the quality of laboratory analyses in the various monitoring programmes within the framework of the ICP Forests programme. The Soil and Soil Solution, Deposition and Foliage and Litterfall expert panels have carried out a number of ring tests and held discussions on quality control. The expert panels’ subgroup, \"Working Group on QA/QC in Laboratories\", has extended its activities from the quality control of water analyses to encompass all forms of laboratory analysis, and now also includes experts in the fields of soil, foliage and litterfall. This paper presents all the quality control methods that have been devised for the relevant fields of analytical chemistry. The aim is to provide those laboratories carrying out analyses within the ICP Forests programme with a complete overview of the possibilities of applying quality control in their laboratories.
Authors
Hui Liu Sarah J. Coulthurst Leighton Pritchard Peter E. Hedley Michael Ravensdale Sonia Humphris Tom Burr Gunnhild Takle May Bente Brurberg Paul R.J. Birch George P.C. Salmond Ian K. TothAbstract
No abstract has been registered