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

Vogt, Esther and Braban, Christine F. and Dragosits, U. and Theobald, Mark Richard and Billet, M. F. and Dore, Anthony J. and Sim Tang, Y. and Van Dijk, N. and Rees, Robert M. and MacDonald, Chris and Murray, Scott and Skiba, Ute M and 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.

Description

Title: Estimation of nitrogen budgets for contrasting catchments at the landscape scale.
Author/s:
  • 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.
Item Type: Article
Título de Revista/Publicación: Biogeosciences
Date: January 2013
ISSN: 1726-4170
Subjects:
Faculty: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Department: Química y Análisis Agrícola [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (16MB)

Abstract

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.

More information

Item ID: 25902
DC Identifier: http://oa.upm.es/25902/
OAI Identifier: oai:oa.upm.es:25902
DOI: 10.5194/bg-10-119-2013
Official URL: http://www.biogeosciences.net/10/119/2013/bg-10-119-2013.html
Deposited by: Memoria Investigacion
Deposited on: 24 Jun 2014 17:03
Last Modified: 23 Feb 2015 15:46
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM