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.
2016
Forfattere
Svein SolbergSammendrag
Det er ikke registrert sammendrag
Forfattere
Svein SolbergSammendrag
Det er ikke registrert sammendrag
Forfattere
Svein SolbergSammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
The present study aims to develop biologically sound and parsimonious site index models for Norway to predict changes in site index (SI) under different climatic conditions. The models are constructed using data from the Norwegian National Forest Inventory and climate data from the Norwegian meteorological institute. Site index was modeled using the potential modifier functional form, with a potential component (POT) depending on site quality classes and two modifier components (MOD): temperature and moisture. Each of these modifiers was based on a portfolio of candidate variables. The best model for spruce-dominated stands included temperature as modifier (R2 = 0.56). In the case of pine- and deciduous-dominated stands, the best models included both modifiers (R2 = 0.40 and 0.54 for temperature and moisture, respectively). We illustrate the use of the models by analyzing the possible shift in SI for year 2100 under one (RCP4.5) of the benchmark scenarios adopted by the Intergovernmental Panel on Climate Change for its fifth assessment report. The models presented can be valuable for evaluating the effect of climate change scenarios in Norwegian forests.
Sammendrag
Feeding by pine weevil (Hylobius abietis L.) causes severe damage to newly planted conifer seedlings in most parts of Scandinavia. We investigated the effect of planting time and insecticide treatment on pine weevil damage and seedling growth. The main objective was to study if planting in early autumn on fresh clear-cuts would promote seedling establishment and reduce the amount of damage caused by pine weevil the following season. The experiment was conducted in southern Sweden and in south-eastern Norway with an identical experimental design at three sites in each country. On each site, Norway spruce seedlings with or without insecticide treatment were planted at four different planting times: August, September, November and May the following year. In Sweden, the proportion of untreated seedlings that were killed by pine weevils was reduced when seedlings were planted at the earliest time (August/September) compared to late planting in November, or May the following year. This pattern was not found in Norway. The average length of leading shoot, diameter growth and biomass were clearly benefited by planting in August in both countries. Insecticide treatment decreased the number of seedlings killed or severely damaged in both Norway and Sweden.
Forfattere
Signe Nybø Bård Pedersen Olav Skarpaas Iulie Aslaksen Jarle W. Bjerke Gregoire Certain Hanne Edvardsen Erik Framstad Per Arild Garnåsjordet Aksel Granhus Hege Gundersen Snorre Henriksen Knut Anders Hovstad Anders Jelmert Margaret McBride Ann Norderhaug Geir Ottersen Eivind Oug Hans-Christian Pedersen Ann Kristin Schartau Ken Olaf Storaunet Gro Ingleid van der MeerenSammendrag
Det er ikke registrert sammendrag
Forfattere
Signe Nybø Bård Pedersen Olav Skarpaas Iulie Aslaksen Jarle W. Bjerke Gregoire Certain Hanne Edvardsen Erik Framstad Per Arild Garnåsjordet Aksel Granhus Hege Gundersen Snorre Henriksen Knut Anders Hovstad Anders Jelmert Margaret McBride Ann Norderhaug Geir Ottersen Eivind Oug Hans-Christian Pedersen Ann Kristin Schartau Ken Olaf Storaunet Gro Ingleid van der MeerenSammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag