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Agricultural ammonia emissions inventory and spatial distribution in the North China Plain |
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| Authors: | Y Zhang AJ Dore XJ Liu WQ Ma JN Cape |
| Institution: | a College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China b Centre for Ecology and Hydrology Edinburgh, Bush Estate, Penicuik, Midlothian EH26 0QB, UK c College of Resources and Environmental Sciences, Agricultural University of Hebei, Baoding 071001, China |
| 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 km2 resolution spatial distribution map, has 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 198 kg N ha−1 yr−1. |
| Keywords: | Ammonia Emission inventory Livestock emission Mineral fertilizer application Spatial distribution |
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