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NitroScape: a model to integrate nitrogen transfers and transformations in rural landscapes

Duretz, S.; Drouet, J.L.; Durand, P.; Hutchings, N.J.; Theobald, M.R.; Salmon-Monviola, J.; Dragosits, U.; Maury, O.; Sutton, M.A.; Cellier, P.. 2011 NitroScape: a model to integrate nitrogen transfers and transformations in rural landscapes. Environmental Pollution, 159 (11). 3162-3170. 10.1016/j.envpol.2011.05.005

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Abstract/Summary

Modelling nitrogen transfer and transformation at the landscape scale is relevant to estimate the mobility of the reactive forms of nitrogen (Nr) and the associated threats to the environment. Here we describe the development of a spatially and temporally explicit model to integrate Nr transfer and transformation at the landscape scale. The model couples four existing models, to simulate atmospheric, farm, agro-ecosystem and hydrological Nr fluxes and transformations within a landscape. Simulations were carried out on a theoretical landscape consisting of pig-crop farms interspersed with unmanaged ecosystems. Simulation results illustrated the effect of spatial interactions between landscape elements on Nr fluxes and losses to the environment. More than 10% of the total N2O emissions were due to indirect emissions. The nitrogen budgets and transformations of the unmanaged ecosystems varied considerably, depending on their location within the landscape. The model represents a new tool for assessing the effect of changes in landscape structure on Nr fluxes.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1016/j.envpol.2011.05.005
Programmes: CEH Topics & Objectives 2009 - 2012 > Biogeochemistry
CEH Sections: Billett (to 30 Nov 2013)
ISSN: 0269-7491
Additional Keywords: reactive N fluxes, N cascade, integrated model, dynamic model, spatially distributed model, landscape scale,
NORA Subject Terms: Agriculture and Soil Science
Date made live: 09 Jan 2012 14:11
URI: http://nora.nerc.ac.uk/id/eprint/16259

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