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Emission und Aufnahme von Lachgas und Methan durch Ackerböden in der Fruchtfolgesequenz Kunstwiese – Silomais unter konventioneller und biologischer Bewirtschaftung

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Skinner, Colin; Krauss, Maike; Conen, Franz; Hansen, Sissel; Mayer, Jochen; Neftel, Albrecht; Mäder, Paul and Gattinger, Andreas (2015) Emission und Aufnahme von Lachgas und Methan durch Ackerböden in der Fruchtfolgesequenz Kunstwiese – Silomais unter konventioneller und biologischer Bewirtschaftung. [Sources and sinks of greenhouse gases in agricultural soils under organic and non-organic cultivation: GHG-emissions from a grass-clover corn crop-sequence.] Paper at: 13. Wissenschaftstagung Ökologischer Landbau, Hochschule für nachhaltige Entwicklung Eberswalde, 17. - 20. März 2015.

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Summary

Organic farming systems provide multiple environmental benefits. Concerning climate change they have a substantial mitigation potential. Skinner et al. (2014) evaluated with Meta-Analysis the global dataset on comparative field measurements of soil greenhouse gas (GHG) fluxes under organic and non-organic agricultural management that have been published by the end of 2012. They showed that for arable land-use under organic management compared to non-organic 1) the cumulated area-scaled N2O emissions are about 15 % lower, 2) yield-scaled N2O emissions are slightly higher and 3) CH4 uptake is higher. However, this database is thin and further field measurements covering whole crop rotations are needed to close knowledge gaps. Therefore soil GHG fluxes are measured since August 2012 in the DOK long-term experiment. Thereby the findings of the Meta-Analysis serve as hypotheses. The measurement results from a grass-clover - maize crop sequence confirm the hypotheses one and three. However hypothesis two was significantly rejected by the biodynamic system compared to the conventional system with farmyard manure.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:GHG, soil, organic, non-organic, DOK
Agrovoc keywords:
LanguageValueURI
EnglishUNSPECIFIEDUNSPECIFIED
Subjects: Soil
Research affiliation: Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Soil Sciences
Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Sustainability > Climate Change
International Conferences > 2015: Scientific Conference of the German Speaking Countries > Pflanze & Boden
ISBN:978-3-89574-885-1
DOI:26920
Related Links:http://www.wissenschaftstagung.de/
Deposited By: Skinner, Colin
ID Code:26920
Deposited On:22 Jun 2015 14:26
Last Modified:13 Jan 2016 10:41
Document Language:German/Deutsch
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:Dieser Beitrag ist im Tagungsband der 13. Wissenschaftstagung erschienen.

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