Costs and values of wetlands for nitrogen abatement in Sweden

azote baltic sea carga contaminante charge polluante costos costs econometria econometrics econometrie eutrophication eutrophisation leaching lessivage du sol lutte antipollution mar baltico mer baltique modele modelos models nitrogen nonpoint pollution pollutant load pollution by agriculture pollution control pollution des mers pollution diffuse pollution par l'agriculture sea pollution terre humide wetlands