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.
2008
Sammendrag
Carbon from complex and structural plant molecules has long been considered more efficiently retained in soils than that of soluble molecules. This dominant paradigm is now being challenged by data emerging from recent isotopic-labeling and compoundspecific isotopic studies. We recently demonstrated that large proportions of plantresidue lignin decompose within a year of incorporation to soils, and that soilextracted lignin has a turnover time of about 20 years (Rasse et al, 2006). In contrast, turnover time of soil-extracted polysaccharides can reach 40 years (Gleixner et al., 2002). Long-term incubation studies have shown that C from labeled glucose is better conserved in certain soil types than C from more complex molecules such as cellulose (e.g. Vinten et al, 2002). These studies suggest that the initial decomposability of plant molecules has limited impact on the long-term fate of their constitutive C in soils. Here we will present a new model where soluble molecules have a competitive advantage over structural molecules for the long-term preservation of their constitutive C in soils. Implementation of compound-specific data in quantitative soil models will also be discussed.
Sammendrag
Carbon dioxide and methane -besides water vapor the most powerful greenhouse gases - have been increasing rapidly in recent decades. A huge reservoir of both gases is stored in boreal soils including permafrost, and a major change in the carbon balance of this reservoir might have dramatic impacts on future climate change. So far, Norway has lacked any infrastructure to assess fluxes of both gases from unique boreal ecosystems, e.g., sub-arctic peatlands exposed to oceanic climate. In spring 2008, Bioforsk, SERC and NILU started an initiative to fill this gap by establishing a flux tower station in the Dverberg peatlands on the island of Andøya in Northern Norway. The site is especially suited for such studies, because it extends an existing flux measurement infrastructure in Abisko, N-Sweden and Sodankylä, N-Finland to include an ecosystem with comparatively mild climate, compared to the Alpine Arctic climate of Abisko and the continental- subarctic climate of Sodankylä.
Forfattere
Eva SkarbøvikSammendrag
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Sammendrag
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Sammendrag
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Sammendrag
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Forfattere
Eva SkarbøvikSammendrag
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Forfattere
Eva SkarbøvikSammendrag
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Forfattere
Eva SkarbøvikSammendrag
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Konferansebidrag og faglig presentasjon – Rammedirektivet for vann i landbruksområder.
Eva Skarbøvik
Forfattere
Eva SkarbøvikSammendrag
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