Reactive nitrogen in the Spanish agri-food sector: environmental impact on atmosphere, soils, water and resources.

Soler Rovira, José; Soler Rovira, Pedro y Arroyo Sanz, Juan Manuel (2009). Reactive nitrogen in the Spanish agri-food sector: environmental impact on atmosphere, soils, water and resources.. En: "16th Nitrogen Workshop", 28 June - 1 July 2009, Turin (Italy).

Descripción

Título: Reactive nitrogen in the Spanish agri-food sector: environmental impact on atmosphere, soils, water and resources.
Autor/es:
  • Soler Rovira, José
  • Soler Rovira, Pedro
  • Arroyo Sanz, Juan Manuel
Tipo de Documento: Ponencia en Congreso o Jornada (Lectura)
Título del Evento: 16th Nitrogen Workshop
Fechas del Evento: 28 June - 1 July 2009
Lugar del Evento: Turin (Italy)
Título del Libro: Proceedings of the 16th Nitrogen Workshop. Connecting different scales of nitrogen use in agriculture.
Fecha: 2009
Materias:
Palabras Clave Informales: ecoefficiency, efficiency, nitrogen balance, reactive nitrogen, substance flow analysis.
Escuela: E.U.I.T. Agrícolas (UPM)
Departamento: Producción Vegetal: Fitotecnia [hasta 2014]
Licencias Creative Commons: Reconocimiento - No comercial - Compartir igual

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Resumen

The presence of reactive species of nitrogen (N) in the biosphere might cause environmental impacts at local, regional and global scales. Nowadays the N flows generated by human activities greatly exceed natural processes, thus a necessity exists of identifying and quantifying the current state of environmental N loads. The aim of this work is to quantify the amount of reactive N used in the Spanish agri-food sector, assessing the related potential environmental impacts and potential uses of resources. Data from a previously calculated N flow analysis in the Spanish agricultural and food production system for the 1996-2000 time period were used. Total anthropogenic N inputs to the systems were calculated. Input and output flows were considered in each economic compartment in order to calculate use efficiency (ratio of useful outputs to total inputs), eco-efficiency (ratio of useful outputs to outputs to the environment) and recycling rate (ratio of flow recycled to an earlier life-cycle compartment divided by total outputs). Environmental impacts were assessed by quantifying the N balance between the economic and the environmental subsystems: water, atmosphere, ecosystems soils and other soils. In this case agricultural soils were also considered an environmental compartment, since they are an important intermediate path to the environment. The impact on resources was evaluated considering the net N imports into the system and legume fixing crops, pastures and forages versus feed and fertilizers within the system. Anthropogenic N inputs are relatively high in Spain, which is a net importer of nitrogen, mainly in fertilizers and food and feed commodities. Environmental compartments receive relative high amounts of reactive nitrogen, especially soils. Furthermore, there was a relative low use of domestic resources, with a low proportion of N recycled within the system.

Más información

ID de Registro: 2504
Identificador DC: http://oa.upm.es/2504/
Identificador OAI: oai:oa.upm.es:2504
Depositado por: Profesor J. Soler Rovira
Depositado el: 08 Mar 2010 07:34
Ultima Modificación: 20 Abr 2016 12:10
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