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.
2026
Sammendrag
Energy-efficient greenhouse climate control is important in high-latitude regions, where heating demand is high and minimizing environmental impacts is increasingly necessary. In this study, a novel centralized environmental control system (ECS) was implemented in a semi-closed tomato greenhouse under Norwegian conditions. The ECS integrates heating, cooling, dehumidification, and heat recovery through air-to water heat exchangers, a heat pump, and thermal energy storage system to support climate control and energy management. The ECS was monitored across three tomato production experiments conducted during summer and winter seasons, and its operational performance was evaluated based on greenhouse climate, tomato yield, and energy use. The experiments included variations in temperature setpoints and cooling capacity. The ECS maintained greenhouse climate that was suitable for tomato production across all experiments. Changes in temperature setpoints and cooling capacity affected ECS electricity consumption and influenced the balance between recovered heat and boiler heating, while having limited effects on tomato yield. The results indicate the potential of centralized ECS technology to sustain tomato production while reducing reliance on fossil-energy, supporting the transition towards energy-efficient and emission-free smart greenhouse production.
Sammendrag
Greenhouse tomato production at high latitudes requires substantial inputs of supplemental lighting, heating and climate control. (Semi-) closed greenhouses can improve heat, water and CO₂ retention, but require additional electricity, climate control system capacities and investment. Crop productivity and resource use must therefore be evaluated jointly. This paper presents the EFREE-Green systems framework for integrating local production conditions, greenhouse environmental control, crop physiological responses, resource flows, and economic and environmental performance. The framework is implemented in two experimental greenhouse compartments operating at a semi-commercial scale at NIBIO Særheim, Norway, connected to a centralized environmental control system (ECS). Measurements at leaf, canopy and greenhouse scale link environmental control with crop carbon gain, biomass partitioning, marketable yield and resource use. Illustrative observations demonstrate that crop responses to supplemental lighting depend on interactions among light availability, CO₂ supply and climate management. Experimental measurements, modelling, techno-economic assessment and life-cycle assessment are combined to evaluate crop productivity, energy efficiency, resource recovery, production costs and greenhouse gas emissions. The framework is transferable to other climatic and production settings, but optimal technologies, capacities and control strategies remain location-specific.
Forfattere
Trond MæhlumSammendrag
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Sammendrag
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Forfattere
Nicolas CattaneoSammendrag
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Forfattere
Liv Guri VelleSammendrag
Kronikk om at arealnøytralitet blir et viktig verktøy for å få kommunene til å se på arealbruken mer samlet. Kommunene trenger kunnskap og oversikt over naturen de forvalter.
Forfattere
Liv Guri VelleSammendrag
Foredrag om de semi-naturlige naturtypene, hva som beskriver disse typene og hvilke verdier de har, statusen de har i den siste rødlista for naturtyper, samt norsk og internasjonal forvaltning av denne naturen med vekt på økologisk tilstand og naturrestaurering.
Forfattere
Marta Vergarechea Ignacio Sevillano Arne Steffenrem A. Ahtikoski H. Holmström C. Antón-FernándezSammendrag
Balancing wood production, biodiversity, and climate regulation is increasingly challenging for forest management, particularly as societal demands intensify. Despite growing interest in genetic improvement to enhance forest productivity, its implications for multiple ecosystem services (FES) remain poorly quantified. To address this gap, we assessed how genetically improved regeneration material, combined with alternative management regimes, influences FES provision in Norway. Using National Forest Inventory data, a climate-sensitive single-tree simulator, and multi-objective optimization, we projected 100-year outcomes under three strategies: no genetic gain, growth-focused improvement, and combined improvement in growth and wood quality. The strongest responses occurred when genetic improvement targeted both growth and wood quality. Under this scenario, harvest net value increased, ecological hotspot areas expanded, and larger set-aside areas were maintained while meeting national harvest demands. Carbon storage in harvested wood products also increased, whereas carbon sequestration in living biomass showed no consistent trend. Genetic gain reinforced positive interactions between bioenergy and climate regulation but left most other FES relationships broadly unchanged. Varying genetic gain levels produced only minor differences across most indicators, suggesting that long-term outcomes depend more on how improved material is integrated within a flexible management portfolio than on the exact magnitude of genetic gain. Positive responses in the structural biodiversity indicators should be interpreted cautiously, as these proxies capture only a limited subset of ecological dimensions and likely underestimate broader biodiversity trade-offs. Overall, genetically improved material represents a complementary tool for enhancing forest multifunctionality when integrated with adaptive, landscape-scale management.
Forfattere
Jorunn BørveSammendrag
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Forfattere
Jorunn BørveSammendrag
Det er ikke registrert sammendrag