Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2019
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Abstract
The measurement network Integrated Carbon Observation System (ICOS) is dedicated to the quantification of fluxes of CO2, H2O, N2O and CH4 at the boundary between vegetation surfaces and the lower atmosphere. The implementation of observations sites follows strict protocols and a challenging labelling process to ensure standardized intercomparable observations. We report on our experiences in attempting to establish the only Norwegian ICOS Ecosystem site thus far, NO-Hur, located in an old-growth spruce forest at Hurdal in Southeast Norway. NOHur is planned as a class 2 site, with the option to an upgrade to class 1 later. The instrumentation and sensors needed, the requirements for spatial homogeneity and a detailed analysis of a digital terrain model are presented. The current status of the tower construction, the preliminary measurements obtained with the existing ICOScertified equipment at a test site, and the plans for integrating the measurements operationally into the network are shown
Authors
Ralf RautenbergerAbstract
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Authors
Bjørn Økland Daniel Flø Martin Schroeder Peter Zach Dragos Cocos Petri Martikainen Juha Siitonen Michail Y. Mandelshtam Dmitry L. Musolin Seppo Neuvonen Jozef Vakula Christo Nikolov Åke Lindelöw Kaljo VoolmaAbstract
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Authors
Bente FøreidAbstract
Biofertilizers, fertilizers made from organic residues, could replace some mineral fertilizers, reducing energy consumption and resource mining. The main treatment options are composting, anaerobic digestion, drying, pyrolysis and combustion, they can be used alone or in combination. The quality of biofertilizers depend both on the original residue and on the treatment, but in most cases not all the nutrients are immediately available to plants. It is difficult to predict how available the nutrients are, and when they will become available. The methods to assess and predict nutrient availability are reviewed. Furthermore, the effect of biofertilizers on the environment in the form of nutrient losses and greenhouse gas emissions are reviewed and compared to mineral fertilizers. There is a need to produce biofertilizers with better and more predictable qualities, and also to understand their effects over multiple seasons.
Authors
Mark R. Bakker Ivano Brunner Francis Ashwood Brynhildur Bjarnadottir Tom Bolger Isabella Børja Monique Carnol Pavel Cudlin Lise Dalsgaard Amandine Erktan Douglas Godbold Hojka Kraigher Ina C. Meier Luis Merino-Martín Jurga Motiejunaite Tanja Mrak Edda S. Oddsdóttir Ivika Ostonen Taina L. Pennanen Ülle Püttsepp Laura M. Suz Elena I. Vanguelova Lars Vesterdal Nadejda A. SoudzilovskaiaAbstract
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Authors
Tatsiana EspevigAbstract
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