To the top

Page Manager: Webmaster
Last update: 9/11/2012 3:13 PM

Tell a friend about this page
Print version

Soil organic matter conte… - University of Gothenburg, Sweden Till startsida
To content Read more about how we use cookies on

Soil organic matter content controls gross nitrogen dynamics and N2O production in riparian and upland boreal soil

Journal article
Authors V. Figueiredo
A. Enrich-Prast
Tobias Rütting
Published in European Journal of Soil Science
Volume 67
Pages 782-791
ISSN 1351-0754
Publication year 2016
Published at Department of Earth Sciences
Pages 782-791
Language en
Subject categories Terrestrial ecology, Other Earth and Related Environmental Sciences, Soil Science, Soil biology


© 2016 British Society of Soil ScienceWe investigated the pathways of gross soil nitrogen (N) transformations and nitrous oxide (N2O) production with 15N enrichment techniques in a boreal forest landscape by comparing organic (riparian) and mineral (upland) soil within two catchments in northern Sweden. The values of all soil properties evaluated for the riparin and upland zones were statistically different (P < 0.05). The rates of gross N transformation were larger in the riparian than in the upland soil (P < 0.05), which can be explained by the larger soil organic matter (SOM) content that provides energy and mineral N as a substrate for other processes. The riparian soil at one site shows a decoupling of nitrification from mineralization; the largest gross mineralization occurred in the soil at this site, but gross nitrification was relatively small. This was probably because of the low pH (2.7 ± 0.1), which inhibits the activity of autotrophic nitrifiers. Oxidation of organic N was the main source of N2O in the soil at all sites, probably because of low soil pH and large organic carbon content, which favours heterotrophic nitrification. The results of our study confirm that organic matter is the main regulating factor for gross N mineralization and nitrification; the latter are markedly different in the organic-rich riparian soil and the upland soil in the boreal forest landscape. Highlights: Which soil properties control gross N transformations and N2O production pathways in boreal soil? Examined nitrogen dynamics in two boreal forest soils with 15N. Considerable oxidation of organic N in boreal soil is the main source of N2O. Soil organic matter is the main regulator of N transformations in boreal forest soil.

Page Manager: Webmaster|Last update: 9/11/2012

The University of Gothenburg uses cookies to provide you with the best possible user experience. By continuing on this website, you approve of our use of cookies.  What are cookies?