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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.

2007

Sammendrag

For instance in France, the number of vertical flow constructed wetland has increased from 0 to more than 400 units between 1992 and 2005. There is a lack of relevant tools for monitoring their functionality and detecting potential failures in the systems. Electrical Resistivity Tomography (ERT) combined with Induced Polarization (IP) could potentially provide such a tool. Preliminary field studies have indicated that spatial variability in the flow pattern can be revealed by time-lapse measurements of electrical resistivity, however the interpretation of these results require better knowledge about the constitutive relationship between electrical properties and water content, water conductivity and biological clogging in typical filter media. A laboratory experiment was conducted using a four-electrode arrangement in soil sampling cylinders. Under controlled water contents the electrical resistivity and IP was measured for different levels of water conductivity and biofilm development. Finally, results were compared with empirical and theoretical relationships

Sammendrag

Artikkelen omhandel sprøyting mot overvintringssopp i høstkorn, hva som påvirker angrep og lønnsomheten ved behandling. Faktorer som tilsier sprøyting er: Områder med langvarig snødekke Store planter/mye bladmasse ved innvintring Redusert jordarbeiding/mye spillkorn Rug Nordvent/skyggefullt areal Anstrengt vekstskifte

Sammendrag

Hvordan skal man beregne økonomien i grønnsaksdyrking på en gard? Tiltak som gjøres ett år påvirker resultatene i påfølgende år. Dårlig jordstruktur på grunn av kjøreskader, eller oppformering av ugras påvirker avlingene, og dermed økonomien.

Sammendrag

Laminaria has been known in Asia, first as kunbu ("large cloth") and, more recently, as haidai ("sea ribbon"). Internationally, "kelp" is generally used. The main extracted products are alginate, iodine and mannitol, which are used in textile, printing, medical and food manufacturing industries. Laminaria in its whole is also used in a huge variety of products for human consumption. In Europe, the exploited species have been L. digitata, hyperborea and saccharina. Mostly harvested as source of saltworth and iodine, wild thallus have also been used as fertizers in agriculture. In 2005, Laminaria is still harvested as alginates sources in Norway (L. hyperborea : 153 906 t) and France (L. digitata : 74 778 t). No cultivation is actually in place. In the late 1920s, the commercial seaweed Laminaria japonica was introduced into China from Hokkaido (Japan). Although commercial production of kelp harvested from its natural habitat has been carried out in Japan for over a century, mariculture of this cold water species on a very large commercial scale has been realized in China in the 1950s. Since, the Chinese kelp production increased from about 60 000 t annually to over 4 millions tones in 2005, making China the world largest producer of Laminaria. The Chinese success of the kelp cultivation in Asia has mainly depended on the adoption of three important techniques: the floating raft method, low temperature cultivation of summer seedlings, and  application of nitrogen fertilizer in the open sea. The Chinese methods that have made Laminaria production successful are shortly described in this poster.

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Sammendrag

Markslagsinstruksen er hovuddokumetasjonen på arealklassifikasjonssystemet som er nytta i Økonomisk kartverk. Den inneheld ein komplett oversikt over alle markslagsklasser, definisjonar, prinsippa for klassifikasjonen og reglar for praktisk kartlegging i felt. Instruksen har vore nytta heilt sidan oppstarten av markslagskartlegging, men har gjennomgått mange større og mindre revisjonar. Denne utgåva vert den siste sidan ein frå 2007 går over til å nytte AR5 i staden for DMK. Men markslagsinstruksen vil også vere det viktigaste kjeldematerialet til dette nye klassifikasjonssystemet.