Ammonia emissions: Acidification and eutrophication

This chapter reviews the environmental performances of agriculture in OECD countries related to ammonia emissions. It provides a description of the policy context (issues and main challenges), definitions for the agri-environmental indicators presented, and elements related to concepts, interpretations, links to other indicators, as well as measurability and data quality. The chapter then describes the main trends of the agri-environmental indicators, using available data covering the period 1990-2010 and based on a set of tables and figures.