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Auswirkungen des langfristigen ökologischen Landbaus auf bodenbürtige Treibhausgasemissionen

Gattinger, Andreas; Skinner, Colin; Krauss, Maike and Mäder, Paul (2019) Auswirkungen des langfristigen ökologischen Landbaus auf bodenbürtige Treibhausgasemissionen. [The impact of long-term organic farming on soil-derived greenhouse gas emissions.] In: Mühlrath, Daniel; Albrecht, Joana; Finckh, Maria R.; Hamm, Ulrich; Heß, Jürgen; Knierim, Ute and Möller, Detlev (Eds.) Innovatives Denken für eine nachhaltige Land- und Ernährungswirtschaft. Beiträge zur 15. Wissenschaftstagung Ökologischer Landbau, Kassel, 5. bis 8. März 2019, Verlag Dr. Köster, Berlin.

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Summary

Despite the increase in organic cropland, knowledge on the impact of organic farming on soil-derived nitrous oxide (N2O) and methane (CH4) emissions is rather limited. To improve the knowledge base, N2O and CH4 fluxes were investigated in a 571 day lasting cropping sequence in the “DOK” field trial. Two organic and two non-organic farming systems and an unfertilized control were chosen. For the whole monitoring, the two organic systems combined emitted 40% less N2O than the two non-organic ones cumulated on area-scale. Yield-scaled cumulated N2O emissions were nearly 10% lower for the organic systems combined, despite the yield gap of 27%. We found that besides N input, management induced soil quality properties drive differences in N2O emissions between farming systems as well. This supports the effort to invest in soil quality by ecological intensification not only to lower the environmental burden of agriculture but also to mitigate greenhouse gases

Summary translation

Despite the increase in organic cropland, knowledge on the impact of organic farming on soil-derived nitrous oxide (N2O) and methane (CH4) emissions is rather limited. To improve the knowledge base, N2O and CH4 fluxes were investigated in a 571 day lasting cropping sequence in the “DOK” field trial. Two organic and two non-organic farming systems and an unfertilized control were chosen. For the whole monitoring, the two organic systems combined emitted 40% less N2O than the two non-organic ones cumulated on area-scale. Yield-scaled cumulated N2O emissions were nearly 10% lower for the organic systems combined, despite the yield gap of 27%. We found that besides N input, management induced soil quality properties drive differences in N2O emissions between farming systems as well. This supports the effort to invest in soil quality by ecological intensification not only to lower the environmental burden of agriculture but also to mitigate greenhouse gases

EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Anbausysteme, Treibhausgase, DOK-Versuch
Subjects: Soil > Soil quality
Soil > Nutrient turnover
Environmental aspects > Air and water emissions
Research affiliation: Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Soil Sciences
Germany > University of Gießen
Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland
International Conferences > 2019: Scientific Conference German Speaking Countrie
ISBN:978-3-89574-955-163
Deposited By: Mühlrath, Daniel
ID Code:36205
Deposited On:29 Aug 2019 07:07
Last Modified:30 Aug 2019 10:10
Document Language:German/Deutsch
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:Dieser Beitrag ist im Tagungsband der 15. Wissenschaftstagung Ökologischer Landbau 2019 in Kassel erschienen. This conference paper is published in the proceedings of the 15th scientific conference on organic agriculture 2019 in Kassel. D. Mühlrath, J. Albrecht, M. R. Finckh, U. Hamm, J. Heß, U. Knierim, D. Möller (2019) Innovatives Denken für eine nachhaltige Land- und Ernährungswirtschaft. Beiträge zur 15. Wissenschaftstagung Ökologischer Landbau, Kassel, 5. bis 8. März 2019, Verlag Dr. Köster, Berlin.

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