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.
2017
Forfattere
Norbert Pirk Mikhail Mastepanov Efrén López-Blanco Louise H. Christensen Hanne H Christiansen Birger Ulf Hansen Magnus Lund Frans-Jan W. Parmentier Kirstine Skov Torben R. ChristensenSammendrag
Methane (CH4) emissions from arctic tundra typically follow relations with soil temperature and water table depth, but these process-based descriptions can be difficult to apply to areas where no measurements exist. We formulated a description of the broader temporal flux pattern in the growing season based on two distinct CH4 source components from slow and fast-turnover carbon. We used automatic closed chamber flux measurements from NE Greenland (74°N), W Greenland (64°N), and Svalbard (78°N) to identify and discuss these components. The temporal separation was well-suited in NE Greenland, where the hypothesized slow-turnover carbon peaked at a time significantly related to the timing of snowmelt. The temporally wider component from fast-turnover carbon dominated the emissions in W Greenland and Svalbard. Altogether, we found no dependence of the total seasonal CH4 budget to the timing of snowmelt, and warmer sites and years tended to yield higher CH4 emissions.
Forfattere
Luis Samaniego Rohini Kumar Stephan Thober Oldrich Rakovec Matthias Zink Niko Wanders Stephanie Eisner Hannes Müller Schmied Edwin Sutanudjaja Kirsten Warrach-Sagi Sabine AttingerSammendrag
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Sammendrag
In this paper, we apply grounded innovation platforms (GRIPs) as a tool for inclusive innovation in relation to forest-based bioenergy in Norway. We use cases studied in the Triple Bottom Line Outcomes for Bioenergy Development and Innovation in Rural Norway research project. We review the notion of GRIPs and classify them. We analyse forms of GRIPs and the hypothesis that forms of GRIP affect ‘triple bottom line’ outcomes of sustainable development. We relate our findings to the debates on inclusive innovation, which we argue is not simply an issue for ‘developing countries’. Development, being understood to be different from economic growth, is concerned with inclusion and exclusion, and, in a world of growing inequalities, is a universal issue everywhere.
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Hvordan påvirker traktorkjøring ulike jordtyper og plantesammensetninger? Det har forskerne i NIBIO sett nærmere på.
Sammendrag
Hvordan påvirker traktorkjøring ulike jordtyper og plantesammensetninger? Det har forskerne i Nibio sett nærmere på.
Forfattere
Diego Faustolo Alves Bispo Marx Leandro Naves Silva Joao Jose Granate de Sa e Melo Marques Marianne Bechmann Pedro Velloso Gomes Batista Nilton CuriSammendrag
Phosphorus transfer at a small catchment in southeastern Brazil: distributed modelling in different land use scenarios
Sammendrag
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Sammendrag
Conversion from agriculture to forestry is considered a measure for mitigation of atmospheric CO2 but the impacts on soil C and N processes remain still unclear. We investigated heterotrophic respiration (RH), specific carbon mineralization (CMIN) and nitrogen mineralization (NMIN) in Norway spruce (Picea abies (Karst.) L.) and oak (Quercus robur L.) chronosequences on former cropland by laboratory incubation. The RH was estimated as the release of C per gram soil and CMIN as the release of C per gram of soil organic matter (SOM). Seven Norway spruce stands (16–44 years), eight oak stands (4–43 years), a cropland, a 35 years old permanent pasture and a 200-year-old oak-dominated forest were sampled (0–5 cm and 5–15 cm soil layers) in early spring. The SOM content gradually increased with stand age in 0–5 cm but remained the same in the 5–15 cm soil layer. The RH in the 0–5 cm layer gradually increased with time since afforestation in both tree species while there was no change in CMIN. In 5–15 cm, neither RH nor CMIN changed significantly after afforestation, but oak stands had significantly higher RH than Norway spruce. The NMIN and nitrification in 0–5 cm significantly increased with stand age and only nitrification was higher in oak. In 5–15 cm, only NMIN in oak increased with stand age, but both NMIN and nitrification were significantly higher in oak than spruce. Cropland RH, CMIN and NMIN rates were comparable to those found within the first decades of afforestation, whereas the 200-year-old forest and the pasture generally had RH and NMIN rates similar to the older chronosequence stands. We conclude that potential RH and soil N mineralization increased with time since afforestation and were tree species specific. Soil organic C stock gains observed in this area during the first 45 years after afforestation were not driven by decreased SOM decomposability, leaving increased litter C inputs as a more likely explanation. The lower CMIN in the 200-year-old forest suggests that future studies should include older forests to assess if the stability of C and the retention of N may increase in a longer term perspective.
Sammendrag
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