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Agricultural ammonia emissions inventory and spatial distribution in the North China Plain

By Y. Zhang, A.J. Dore, L. Ma, X.J. Liu, W.Q. Ma, J.N. Cape and F.S. Zhang

Abstract

An agricultural ammonia (NH3) emission inventory in the North China Plain (NCP) on a prefecture level for the year 2004, and a 5 × 5 km resolution spatial distribution map, have been calculated for the first time. The census database from China’s statistics datasets, and emission factors re-calculated by the RAINS model supported total emissions of 3071 kt NH3-N yr-1 for the NCP, accounting for 27% of the total emissions in China. NH3 emission from mineral fertilizer application contributed 1620 kt NH3-N yr-1, 54% of the total emission, while livestock emissions accounted for the remaining 46% of the total emissions, including 7%, 27%, 7% and 5% from cattle, pigs, sheep and goats, and poultry, respectively. A high-resolution spatial NH3 emissions map was developed based on 1 × 1 km land use database and aggregated to a 5 × 5 km grid resolution. The highest emission density value was up to 198 kg N ha-1 yr-1

Topics: Atmospheric Sciences
Publisher: Elsevier
Year: 2010
DOI identifier: 10.1016/j.envpol.2009.08.033
OAI identifier: oai:nora.nerc.ac.uk:9367

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