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
Authors
Bjørn Egil FløAbstract
No abstract has been registered
Abstract
Humic substances are important indicators of soil fertility. The fluorescence properties of humic acids from black soils in Harbin, northeast China, were investigated, after long-term fertilization using treatments with or without mineral fertilizer (NPK) and organic manure. Excitation and emission matrices combined with parallel factor analysis were used to investigate the structure of the humic acid. Principal component analysis was performed to select the most suitable parameters for the description of humic acid. The dimension reduction for the original fluorescence parameters extracted two principal components. By using the two principal component scores as a new index for clustering, it was concluded that long-term fertilization treatments in black soil in Harbin clustered into three groups of manure + NPK and organic manure treatments, NPK treatment, and soil without any fertilization. Manure + NPK fertilization and manure fertilization alone led to a higher degree of humification than NPK only or the control. We conclude that long-term fertilization with organic matter with or without NPK could increase the humification degree of these soils.
Abstract
No abstract has been registered
Authors
R. Ioos P. Chrétien J. Perrault C. Jeandel C. Dutech P. Gonthier F. Sillo Ari Hietala Halvor Solheim J. HubertAbstract
No abstract has been registered
Authors
Hanno Sandvik Dag Dolmen Reidar Elven Tone Falkenhaug Elisabet Forsgren Haakon Hansen Kristian Hassel Vivian Husa Gaute Kjærstad Frode Ødegaard Hans Christian Pedersen Halvor Solheim Bård Gunnar Stokke Per Arvid Åsen Sandra Åström Tor Erik Brandrud Hallvard Elven Anders Endrestøl Anders Gravbrøt Finstad Stein Fredriksen Øivind Gammelmo Jan Ove Gjershaug Bjørn Gulliksen Inger Hamnes Bjørn Arild Hatteland Hanne Hegre Trygve Hesthagen Anders Jelmert Thomas C Jensen Stein Ivar Johnsen Egil Karlsbakk Christer Magnusson Kjell Nedreaas Björn Nordén Eivind Oug Oddvar Pedersen Per Anker Pedersen Kjersti Sjøtun Jon Kristian Skei Heidi Solstad Leif Sundheim Jon E Swenson Per Ole Syvertsen Venche Talgø Vigdis Vandvik Kristine B Westergaard Rupert Wienerroither Bjørnar Ytrehus Olga Hilmo Snorre Henriksen Lisbeth GederaasAbstract
This is a post-peer-review, pre-copyedit version of an article published in [Biological Invasions] Locked until 3.8.2020 due to copyright restrictions. The final authenticated version is available online at: https://doi.org/10.1007/s10530-019-02058-x
Authors
Line JohansenAbstract
No abstract has been registered
Abstract
No abstract has been registered
Authors
Line Johansen Anna Westin Sølvi Wehn Anamaria Iuga Cosmin Marius Ivascu Eveliina Kallioniemi Tommy LennartssonAbstract
No abstract has been registered
Authors
Sølvi Wehn Anna Westin Line Johansen Anamaria Iuga Cosmin Marius Ivascu Eveliina Kallioniemi Tommy LennartssonAbstract
No abstract has been registered
Authors
Inger Skrede Monica Hongrø Solbakken Jaqueline Hess Carl Gunnar Fossdal Olav Aaseth Hegnar Gry AlfredsenAbstract
No abstract has been registered