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Research article - Peer-reviewed, 2004

A dual-porosity model for nitrogen leaching from a watershed

Vassiljev A, Grimvall A, Larsson M


The MASONW (MACRO + SOILN + Watershed) model describing nitrogen leaching in watersheds was developed and tested. The model is based on the MACRO and SOILN models. The dual-porosity model MACRO simulates water flow on the field scale. The SOILN model describes turnover and leaching of nitrogen. Two main features of a watershed have been added into these two models: (a) the existence of a river system, and (b) variable thickness of the aeration zone within a watershed. Good agreement between the output of the MASONW model and observed data for water discharge and nitrate concentrations were achieved in the Odense watershed (496 km(2)) in Denmark

Published in

Hydrological Sciences Journal
2004, Volume: 49, number: 2, pages: 313-322

      SLU Authors

    • Larsson, Martin

      • Department of Soil Sciences, Swedish University of Agricultural Sciences

    UKÄ Subject classification

    Agricultural Science

    Publication Identifiers


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