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.
2014
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Klaus Mittenzwei Wolfgang Britz Christine WieckSammendrag
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Forfattere
Sølvi Wehn Sverre Lundemo Jarle Inge HoltenSammendrag
Det er ikke registrert sammendrag
Forfattere
Alexander Kopatz Hans Geir Eiken Jouni Aspi Ilpo Kojola Camilla Tobiassen Konstantin F. Tirronen Pjotr I. Danilov Snorre HagenSammendrag
Det er ikke registrert sammendrag
Forfattere
Blas Mola Yudego Ioannis Dimitriou Sara Gonzalez-Garcia David Gritten Pär AronssonSammendrag
Det er ikke registrert sammendrag
Forfattere
Javier Arevalo Robert Ochieng Blas Mola Yudego David GrittenSammendrag
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Sammendrag
Det er ikke registrert sammendrag
Sammendrag
This study presents the analysis of panel data on steep terrain logging productivity in Norway. Given the specification of a Cobb Douglas stochastic frontier production function in which the technical inefficiency is a function of six different environmental factors, it was found that only one (terrain hindrance) decreased the efficiency significantly. The estimated efficiencies for the sample crews ranged from 0.43 to 0.99. Because of the nature of the inefficiency factors, one way to improve the efficiency could be to train the crews for working on steep slopes. This would also improve the safety when exposing workers to these types of environmental hazards.
Forfattere
Maria Magdalena Estevez Roar Linjordet Svein Jarle Horn John MorkenSammendrag
Det er ikke registrert sammendrag
Sammendrag
Variable retention harvesting is acknowledged as a cost-effective conservation measure, but previous studies have focused on the environmental value and planning cost. In this study, a model is presented for optimizing harvesting cost using a high resolution map generated from airborne laser scanning data. The harvesting cost optimization model is used to calculate the objective value of different scenarios. By comparing the objective values, better estimates of the opportunity cost of woodland key habitats are found. The model can be used by a forest manager when evaluating what silvicultural treatments to implement or as an input for improving the nature reserve selection problem for woodland key habitats or retention patches. The model was tested on four real-world cases, and the results indicate that terrain transportation costs vary more than reported in the literature and that it may be worthwhile to divide the opportunity cost into its direct and indirect components.