Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
2007
Forfattere
Ole Risbøl Arnt Kristian Gjertsen Kjetil SkareSammendrag
A lidar (light detection and ranging) airborne laser scanning project was initiated in 2005, and the results of phase two of this project are presented in this report. The main objective was to test, develop and gradually implement lidar as a method for surveying and monitoring cultural remains in forest areas. As part of the project, a test area comprising 10 square kilometres containing cultural remains, mainly in the form of slag heaps and charcoal pits, was scanned. One of our goals in phase two was to test visual as well as the automatic detection of cultural remains on our terrain models. The visual approach was conducted by means of a simple study of the relief maps and by an approach using the analysis software QT-reader. Generally speaking, a good level of accuracy was achieved by exclusively visual study of the maps. However, results were improved when QT-reader was taken into use. Tests using the pattern recognition methods template matching and Hough-transformation were less successful, and the results suggest that further development is necessary if these, or other pattern recognition methods, are to be successfully used in connection with the survey of cultural remains. At present, lidar is not a satisfactory substitute for field-work if the purpose is to map the total prehistoric use of an area, but it is very suitable where a more large-meshed overview is sufficient. The project will continue to focus on the challenges and limitations associated with this method.
Forfattere
Klaus Mittenzwei Wendy Fjellstad Wenche E. Dramstad Ola Flaten Arnt Kristian Gjertsen Maria Loureiro Sjur Spildo PrestegardSammendrag
In recent years the objectives of agricultural policy have shifted from a principal focus on production and income towards agriculture\"s provision of public goods summarized by the term ‘multifunctionality\". Agricultural sector models, which are important tools for policy advice, need to be adjusted in order to maintain their relevance and reliability in accordance with policy changes. This paper investigates the strengths and limitations of incorporating multifunctionality indicators in the agricultural sector model Common Agricultural Policy Regional Impact Analysis (CAPRI) by reviewing the existing literature and incorporating such indicators in the model. Multifunctionality indicators are developed and implemented for four selected aspects of multifunctionality: food security, landscape, environmental concerns and rural viability. By running different policy reform scenarios, it is shown that indicators closely related to the underlying economic variables of the sector model may provide useful to describe the effects of policy reforms on agriculture\"s multifunctionality. However, these indicators do not completely cover the selected aspects of multifunctionality. In order to yield a broader coverage, this paper proposes to strengthen interdisciplinary research by linking agricultural sector models with other model systems like farm-based economical-ecological models, regional economic models or landscape information systems.
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Forfattere
Volkmar TimmermannSammendrag
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Isabella Børja Holger Lange Arne Steffenrem Roman Gebauer Slawomir Gluszek Hooshang MajdiSammendrag
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Forfattere
Leena Finér Heljä-Sisko Helmisaari Krista Lõhmus Hooshang Majdi Ivano Brunner Isabella Børja Toril Drabløs Eldhuset Douglas Lawrence Godbold Tine Grebenc Bohdan Konôpka Hojka Kraigher M.-R. Möttönen J. Oleksyn Ivika Ostonen V. Uri Elena Iordanova VanguelovaSammendrag
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