Skip to Main content Skip to Navigation
Journal articles

The role of water nitrogen retention in integrated nutrient management: assessment in a large basin using different modelling approaches

Abstract : Assessing the removal of nitrogen (temporary and permanent) in large river basins is complex due to the dependency on climate, hydrological and physical characteristics, and ecosystems functioning. Measurements are generally limited in number and do not account for the full integration of all processes contributing to nitrogen retention in the river basin. However, the estimation of nitrogen retention by the ecosystems is crucial to understanding the nitrate water pollution and the N 2 O emissions to the atmosphere, as well as the lag time between the implementation of agri-environmental measures to reduce nitrogen pollution and the improvement of water quality. Models have often been used to understand the dynamics of the river basin system. The objective of this study was to assess nitrogen retention in a large river basin, the Seine basin (∼65 000 km 2 , in France), through the application of three models with different levels of complexity developed for different specific purposes: the GREEN, SWAT and RiverStrahler models. The study analyses the different modelling approaches and compares their estimates of water nitrogen retention over an 11-year period. Then reflexions on the role played by nitrogen retention by aquatic ecosystems in integrated nutrient management are presented. The results of this study are relevant for the understanding of nitrogen retention processes at the large river basin scale and for the analysis of mitigation measure scenarios designed to reduce nitrogen impacts on aquatic ecosystems and climate.
Document type :
Journal articles
Complete list of metadata

Cited literature [13 references]  Display  Hide  Download

https://hal.sorbonne-universite.fr/hal-01263707
Contributor : Gestionnaire Hal-Upmc <>
Submitted on : Thursday, January 28, 2016 - 10:26:29 AM
Last modification on : Tuesday, December 29, 2020 - 2:08:02 PM
Long-term archiving on: : Friday, November 11, 2016 - 5:56:35 PM

File

pdf.pdf
Publication funded by an institution

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Citation

Bruna Grizzetti, Paul Passy, Gilles Billen, Fayçal Bouraoui, Josette Garnier, et al.. The role of water nitrogen retention in integrated nutrient management: assessment in a large basin using different modelling approaches . Environmental Research Letters, IOP Publishing, 2015, 10 (6), pp.065008. ⟨10.1088/1748-9326/10/6/065008⟩. ⟨hal-01263707⟩

Share

Metrics

Record views

659

Files downloads

397