Publication Details

Reference Category Journals
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Title (Primary) Char amendments impact soil nitrous oxide production during ammonia oxidation
Author Wells, N.S.; Baggs, E.M.;
Journal Soil Science Society of America Journal
Year 2014
Department CATHYD;
Volume 78
Issue 5
Language englisch;
POF III (all) T31;
UFZ wide themes RU2;
Abstract

Biochar (char) soil amendments are speculated to be able to lower emission of the greenhouse gas N2O, yet the mechanism through which chars might control soil N cycling is not understood. To disentangle the role of N2O production and reduction pathways, we incubated fallow soils containing either woody charcoal or activated C with single and double 15N labelled NH4NO3. This revealed a systemic oversight in conventional thought on char’s impact on N2O emissions: Although char additions did influence soil N2O emissions, this influence came primarily via ammonia oxidation and not from changes in production or reduction of N2O during denitrification. The direction and magnitude of this impact was char dependent, and based on the 27% increase in N2O emissions with woody charcoal additions, we conclude that the net emissions factor for chars could potentially be positive.

ID 15357
Persistent UFZ Identifier http://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=15357
Wells, N.S., Baggs, E.M. (2014):
Char amendments impact soil nitrous oxide production during ammonia oxidation
Soil Sci. Soc. Am. J. 78 (5), 1656 - 1660