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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

Cornelya Klutsch

Abstract

No abstract has been registered

Authors

Cornelya Klutsch

Abstract

No abstract has been registered

Authors

Bente Føreid Enoksen Anders Thorsten Heidorn Trond Mæhlum

Abstract

No abstract has been registered

Authors

Trond Mæhlum

Abstract

No abstract has been registered

Authors

Trond Mæhlum

Abstract

No abstract has been registered

To document

Authors

Heidi Knutsen Trond Mæhlum Ketil Haarstad Gøril Aasen Slinde Hans Peter Arp

Abstract

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence

Authors

Daniel Rasse

Abstract

No abstract has been registered

Authors

Daniel Rasse

Abstract

No abstract has been registered

To document

Authors

Adam Paruch Trond Mæhlum Ragnar Eltun Emanuel Tapu Ovidiu Spinu

Abstract

No abstract has been registered

To document

Authors

Dan Wei Yan Li Shan-shan Cai Liang Jin Yu-mei Li Wei Wang Yang Bai Yu Hu Nicholas Clarke

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.