Abstract:  Based on the activity data of agricultural ammonia emission sources， an agricultural ammonia emission inventory of Shanghai in 2011 was developed by analyzing emission factors in the literature and model. It was shown that the total agricultural NH3 emission in Shanghai was 54.53×103 t in 2011. Livestock and poultry breeding and N fertilizer application were main contributors of agricultural NH3 sources， accounting for 61.2% and 34.3% of total NH3 emission， respectively. Hog was the largest contributor among the livestock and poultry sources， accounting for 56.9% of total livestock and poultry emission， followed by poultry， with a contribution of 34.2%. For spatial distribution， Pudong， Jinshan， Fengxian and Chongming districts were the top four NH3 emissions contributors， which accounted for 66.2% altogether of total NH3 emission in Shanghai. Fengxin was the largest NH3 emission town for livestock and poultry breeding sources， while Liantang Town was the largest contributor for NH3 emission of N fertilizer application. In general， Pudong， Jinshan， Fengxian and Chongming were four key districts for ammonia emission control， while hog， poultry and application of N fertilizer were vital sources for reducing NH3 emissions.

Key words: NH3, emission inventory, agricultural emission sources, distribution characteristics； Shanghai