Ammonia (NH3) is considered to be an important precursor in the formation ofsecondary aerosols and thus particulate matter. As a consequence, negative impacts onecosystems due to Acidification and Eutrophication result. The main emission sourcesof ammonia are agriculture (especially livestock), road traffic, industry and powergeneration.In this work a NH3 emission cadastre has been created for the IMOS-U study areaFeldbach, and for the city of Graz. The emissions of the main sources of agriculture androad traffic were captured, integrated into a geographic information system and theresults were visualized. Traffic emissions were collected on the basis of current trafficstatistics and a traffic model. A literature research provided the basis for selecting anappropriate model and developing methodology to collect and allocate NH3 emissionsfrom agriculture to a raster with 500 m cell size. Due to the inhomogeneous structure ofthe survey data a special approach for was necessary in cadastral boundary areas.For the agricultural area of Feldbach total emissions amounted to 1.716 t of NH3 peryear, of which 1.716 t originated from agriculture, just 0.1% (2,7 t) from road transport.Within the agricultural sector, animal husbandry and manure management accounted for90% and fertilizer application for 10% of the NH3 emissions. Within the category ofanimal husbandry and manure management emissions were distributed as follows: 57%pigs, 32% poultry, 10% cattle and 1% other animals.For the city of Graz annual NH3 emissions amounted to 51.2 t, 77% (39.6 t) of whichoriginated from agriculture and 23% (11.5 t) from road traffic. Regarding thedistribution of emissions among animal categories for the city of Graz, cattle accountedfor 73% (19.3 t), pigs for 16% (4.3 t), poultry for 3% (0.6 t) and other Animals for 8%(2.1 t).