Gestion foncière des excédents azotés et marché implicite de droits à polluer : application aux élevages intensifs

摘要

Agricultural Management of Nitrogen Surpluses and Implicit in Pollution Rights Market: Application to Intensive Livestock Farming by Pierre Rainelli and Dominique Vermersch The problem of pollution originating from intensive rearing is analysed through a general welfare economics model. The policy option chosen to avoid this situation relies chiefly on command and control measures, with a limited amount of livestock manure which can be applied to the land (170 kg of nitrogen in the 1991 EC directive). When the standards are defined, the producers will maximise their profit under this constraint. This leads to a market of manure spreading rights, between farmers having land available for spreading manure and farmers having a high disposal rate per unit of land. An empirical illustration concerning Brittany is presented.