Estimation of nitrogen budgets for contrasting catchments at the landscape scale.

Vogt, Esther; Braban, Christine F.; Dragosits, U.; Theobald, Mark Richard; Billet, M. F.; Dore, Anthony J.; Sim Tang, Y.; Van Dijk, N.; Rees, Robert M.; MacDonald, Chris; Murray, Scott; Skiba, Ute M y Sutton, Mark A. (2013). Estimation of nitrogen budgets for contrasting catchments at the landscape scale.. "Biogeosciences" (n. 10); pp. 119-133. ISSN 1726-4170. https://doi.org/10.5194/bg-10-119-2013.

Descripción

Título: Estimation of nitrogen budgets for contrasting catchments at the landscape scale.
Autor/es:
  • Vogt, Esther
  • Braban, Christine F.
  • Dragosits, U.
  • Theobald, Mark Richard
  • Billet, M. F.
  • Dore, Anthony J.
  • Sim Tang, Y.
  • Van Dijk, N.
  • Rees, Robert M.
  • MacDonald, Chris
  • Murray, Scott
  • Skiba, Ute M
  • Sutton, Mark A.
Tipo de Documento: Artículo
Título de Revista/Publicación: Biogeosciences
Fecha: Enero 2013
Materias:
Escuela: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Departamento: Química y Análisis Agrícola [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

Texto completo

[img]
Vista Previa
PDF (Document Portable Format) - Se necesita un visor de ficheros PDF, como GSview, Xpdf o Adobe Acrobat Reader
Descargar (16MB)

Resumen

A comprehensive assessment of nitrogen (N) flows at the landscape scale is fundamental to understand spatial interactions in the N cascade and to inform the development of locally optimised N management strategies. To explore these interactions, complete N budgets were estimated for two contrasting hydrological catchments (dominated by agricultural grassland vs. semi-natural peat-dominated moorland), forming part of an intensively studied landscape in southern Scotland. Local scale atmospheric dispersion modelling and detailed farm and field inventories provided high resolution estimations of input fluxes. Direct agricultural inputs (i.e. grazing excreta, N2 fixation, organic and synthetic fertiliser) accounted for most of the catchment N inputs, representing 82% in the grassland and 62% in the moorland catchment, while atmospheric deposition made a significant contribution, particularly in the moorland catchment, contributing 38% of the N inputs. The estimated catchment N budgets highlighted areas of key uncertainty, particularly N2 exchange and stream N export. The resulting N balances suggest that the study catchments have a limited capacity to store N within soils, vegetation and groundwater. The "catchment N retention", i.e. the amount of N which is either stored within the catchment or lost through atmospheric emissions, was estimated to be 13% of the net anthropogenic input in the moorland and 61% in the grassland catchment. These values contrast with regional scale estimates: Catchment retentions of net anthropogenic input estimated within Europe at the regional scale range from 50% to 90%, with an average of 82% (Billen et al., 2011). This study emphasises the need for detailed budget analyses to identify the N status of European landscapes.

Más información

ID de Registro: 25902
Identificador DC: http://oa.upm.es/25902/
Identificador OAI: oai:oa.upm.es:25902
Identificador DOI: 10.5194/bg-10-119-2013
URL Oficial: http://www.biogeosciences.net/10/119/2013/bg-10-119-2013.html
Depositado por: Memoria Investigacion
Depositado el: 24 Jun 2014 17:03
Ultima Modificación: 23 Feb 2015 15:46
  • Open Access
  • Open Access
  • Sherpa-Romeo
    Compruebe si la revista anglosajona en la que ha publicado un artículo permite también su publicación en abierto.
  • Dulcinea
    Compruebe si la revista española en la que ha publicado un artículo permite también su publicación en abierto.
  • Recolecta
  • e-ciencia
  • Observatorio I+D+i UPM
  • OpenCourseWare UPM