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Erfassung gasförmiger Emissionen vom Auslauf eines Jungviehstalles mittels aktiver Probenahmehaube

Winter, T. and Linke, Stefan (2017) Erfassung gasförmiger Emissionen vom Auslauf eines Jungviehstalles mittels aktiver Probenahmehaube. In: Wolfrum, Sebastian; Heuwinkel, Hauke; Wiesinger, Klaus; Reents, Hans Jürgen and Hülsbergen, Kurt-Jürgen (Eds.) Ökologischen Landbau weiterdenken: Verantwortung übernehmen, Vertrauen stärken, Verlag Dr. Köster, Berlin, pp. 492-495.

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Open stable systems with outdoor yards are used in organic cattle farming. Until now there are no emission factors in Germany for outdoor yards of dairy barns or of cattle
barns generally. The measuring of the emission potential of gaseous substances (NH3, CO2, N2O and CH4) is difficult because of the size of the outdoor yards and the direct access by climate. One possibility to measure those emissions is the use of an active sampling hood. The sampling hood provides defined laminar exhaust airflow.
The product of flow rate and concentration results in the emission mass flow. In a preliminary study six cattle in calf with a total of 7.19 GV had access to an outdoor
yard. This was divided virtually in a 9 x 11 à 1 m² grid. To each m² a dirt level (clean, slightly, medium and heavily soiled) has been assigned. The grid area was sampled
randomly. The influence of a scraper was investigated, too. The levels of dirtiness were allocated to the NH3 emission mass flows. Based on the rating the results of the
random samples were transferred on the partial area of the entire outdoor yard. The outcome of this is an emission factor for NH3 of 3.02 kg/GV*a for the outdoor yard
before the scraper was used and 2.79 kg/GV*a afterwards. The preliminary results show that measuring NH3 emissions by an active sampling hood is practicable for the use at outdoor yards of cattle barns.

EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:Emission, Milchvieh, aktive Probenahmehaube
Agrovoc keywords:
active sampling hood
Subjects: Animal husbandry > Production systems > Dairy cattle
Environmental aspects > Air and water emissions
Research affiliation: Germany > Federal Research Institute for Rural Areas, Forestry and Fisheries - VTI
Germany > Federal Research Institute for Rural Areas, Forestry and Fisheries - VTI > Institute of Organic Farming - OEL
International Conferences > 2017: Scientific Conference German Speaking Countries > Animal husbandry
Deposited By: Hasreiter, Anna
ID Code:31608
Deposited On:22 Jul 2017 09:34
Last Modified:22 Jul 2017 09:34
Document Language:German/Deutsch
Refereed:Peer-reviewed and accepted
Additional Publishing Information:Dieser Beitrag ist im Tagungsband der 14. Wissenschaftstagung erschienen.
S. Wolfrum, H. Heuwinkel, H.J. Reents, u.a. (Hrsg.) (2017): Ökologischen Landbau weiterdenken - Verantwortung übernehmen - Vertrauen stärken. Beiträge der 14. Wissenschaftstagung Ökologischer Landbau, Freising-Weihenstephan, 7.-10. März 2017
Verlag Dr. Köster, Berlin

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