An estimate of the contribution of outdoor concrete yards used by livestock to the UK inventories of ammonia, nitrous oxide and methane期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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An estimate of the contribution of outdoor concrete yards used by livestock to the UK inventories of ammonia, nitrous oxide and methane

Authors:	J Webb T Misselbrook B F Pain J Crabb S Ellis

Institution:	1. ADAS Research, Wergs Road, Wolverhampton WV6 8TQ, UK;2. IGER North Wyke, Okehampton, Devon EX20 2SB, UK;3. ADAS Market and Policy Research, Wergs Road, Wolverhampton WV6 8TQ,UK;4. ADAS Boxworth, Battlegate Lane, Boxworth, Cambridge CB2 3NN, UK;1. Department of Bioorganic Chemistry, Faculty of Chemistry, Wroc?aw University of Science and Technology, Wybrze?e Wyspiańskiego 27, 50-370, Wroc?aw, Poland;2. Department of Chemistry, University of Opole, ul. Oleska 48, 45-052, Opole, Poland;1. Department of Physics, Jadavpur University, Kolkata 700032, India;2. Fuel Cell and Battery Division, Central Glass and Ceramic Research Institute, Kolkata 700032, India;3. Clay and Traditional Ceramics Division, Central Glass and Ceramic Research Institute, Kolkata 700032, India;1. Departament of Animal Science, Federal Rural University of Pernambuco, Dom Manoel de Medeiros St, Recife, 52171-900, Brazil;2. Forage and Animal Science, Texas A&M AgriLife Research, 1229 N US Hwy 281, Stephenville, TX, 76401, USA;3. Departament of Animal Science, Iowa State University, 313 H Kildee Hall, Ames, IA, 50011, USA

Abstract:	Many farms have unroofed concrete yards used by livestock. These concrete yards have received little attention as sources of gaseous emissions. From 1997 to 1999 measurements were made of emissions of ammonia (NH₃), nitrous oxide (N₂O) and methane (CH₄) from 11 concrete yards used by livestock. A postal survey was carried out to assess the areas of yards on farms in England and Wales to enable the measurements to be scaled up to estimate national emissions. Using the results of this study NH₃-N emissions from farm concrete yards were calculated to be ca. 35×10³ t annually. This is 13% of the current estimated total NH₃-N emission from UK livestock. Concrete yards were an insignificant source of N₂O and CH₄ which were both <0.01% of current estimates of agricultural emissions.

Keywords:	Ammonia emission Nitrous oxide Methane Concrete yards Inventories
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