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.
2010
Forfattere
Kristin Kaspersen Therese With Berge Steve Goldberg Jan Netland Øyvind Overskeid Trygve StølanSammendrag
Det er ikke registrert sammendrag
Forfattere
Tron Eid Andreas Brunner Gunnhild Søgaard Rasmus Astrup Stein Tomter Øyvind Løken Rune EriksenSammendrag
Ambitious targets for renewable energy production in Norway draw attention to biomass potent-ials. The objective of this report is to review the state of the art regarding research on estimation methods, the availability and production of tree biomass resources for energy purposes in Norway in order to indentify knowledge gaps and thus facilitate appropriate focus, development and priorities regarding research for the coming years. The review focuses on biomass from pri-mary forest production with emphasis on Norwegian conditions, but also considers international research, especially from the other Nordic countries. Three main subject areas are considered: - biomass estimation - biomass resources and availability - biomass production. The first part of this report comprises an overview of existing biomass equations and associated inventory methods applied for estimating biomass in Norway. The overview includes a description of the Norwegian National Forest Inventory data as a basis for large-scale biomass assessments. The second part of the report comprises an overview of previous Norwegian assessments of biomass as an energy supplier as well as suggestions for improvements in such assessments. Improvement possibilities regarding the impacts of environmentally oriented restrictions, appropriate models for productivity and cost calculations regarding biomass harvesting systems, and implementation of biomass-related features in existing decisions support systems to facilitate analyses, where timber production and biomass production for energy purposes are equally important, are identified. The final part of the review focuses on silvi-cultural options aiming at optimizing the value of total biomass instead of the conventional approach to silviculture where the main focus is timber values.
Forfattere
Arne EriksenSammendrag
Intervju med prosjektleder Jihong Liu Clarke, seksjonsleder Sonja Klemsdal, og avd. ing. Even Sannes Riiser.
Forfattere
Eva SkarbøvikSammendrag
Foredrag i Norsk Vannforening 15. oktober 2010. Fagtreff om Overvåking i forbindelse med implementeringen av Vanndirektivet.
Forfattere
Arne HermansenSammendrag
Det er ikke registrert sammendrag
Forfattere
Agnar KvalbeinSammendrag
Om naturgitte forutsetninger for plantevekst, drenering, konstruksjon av baner med hengende vannspeil, etableringsmetoder og inngroing.
Forfattere
Paul Andreas AakerøySammendrag
Etter anmodning fra grunneier Ole Chr. Rosed har Bioforsk foretatt en vurdering av hydrogeologiske forhold på Veståsen i Søndre Land kommune. Området er regulert til hyttefelt, og det er for den delen av hyttefeltet som denne rapporten omhandler ikke opparbeidet vannforsyning. Det er her ønskelig med en felles borebrønn. Det er i denne rapporten gitt en vurdering av hydrogeologisk vurdering av lokaliteten og med utgangspunkt i denne oppgitt to anbefalte lokaliteter for anleggelse av felles brønn.
Forfattere
Paul AakerøySammendrag
Det er ikke registrert sammendrag
Forfattere
Trygve S. AamlidSammendrag
Foredraget oppsummerer de viktigste forsøksreusltater med bruk av dekkvekst til engsvingel, rødsvingel, engrapp, bladfaks og kvitkløver, og gir dessuten råd om etablering av frøeng i falskt såbed.
Forfattere
Trygve S. Aamlid Line Rosef Per Anker Pedersen Anne A. SteensohnSammendrag
A factorial trial comparing various subsoils (mineral, organic, and 50/50 (v/v) mineral/organic mixture), no liming vs. liming (1100 kg CaO/ha), and no sowing vs. sowing of an imported seed mixture or a mixture based on Norwegian mountain ecotypes, was established on 9 July 2008 in Bitdalen, Telemark. The establishment of vegetation from seed was faster on the organic and mixed soils than on the mineral soil. Although the initial pH(H2O) was higher in the mineral soil (5.8) than in the organic and mixed soils (4.9-5.0), the greatest relative effect of liming on plant cover was found on the former soil type. The imported seed mixture, mostly consisting of Danish and Dutch varieties, resulted in faster establishment than the seed mixture consisting of Norwegian ecotypes. One year later, the difference in ground cover was less conspicuous, but total above-ground plant biomass was almost three times higher after use of the imported seed mixture (77 vs. 29 g DM/m2). The imported seed also had a much greener appearance than the Norwegian ecotypes and the local vegetation. On average for soil types and liming treatments, the ground cover on unseeded plots increased from 1% six weeks after sowing to 24% after fourteen months; this cover mostly consisted of Agrostis spp. and mosses. It is concluded (1) that soil organic matter is a valuable resource that should be well preserved during restoration projects; (2) that the use of imported / unadapted seed mixtures must be avoided; and (3) that the use of a well adapted seed mixture from alpine ecotypes may be a good alternative to leaving the ground unseeded especially where there is a poor seed bank, where there is a need for rapid development of vegetation cover, or where a cover of grasses is wanted for functional reasons.