Author(s)

E Wendland, R. Kunkel, A. Grimvall, B. Kronvang & D.I. Muller- Wohlfeil

Abstract

Model system for the management of nitrogen leaching at the scale of river basin and regions F. Wendland', R. Kunkel', A. Grimvatf, B. Kronvang* & D.I. Miiller-Wohlfei^ ' Research Centre Julich, Programme Group Systems Analysis and Tech- nology Evaluation (STE), Germany. * Department of Mathematics, Division of Statistics, Linkoping Univer- sity, Sweden. * National Environmental Research Institute (NERI), Denmark. Abstract The SoilN/WEKU model system was developed to estimate groundwater-borne nitrogen inputs into river systems. The core of this model system is composed of a soil nitrogen leaching model (SoilN) and a groundwater residence time/denitrification model (WEKU). The application of the model system was carried out in the framework of the EU-project RANK (Regional analysis of subsurface nitrogen retention and its impact on the nitrogen export from land to sea) for a macroscale study river basin in Germany (the Uecker basin, ca. 2400 o

Keywords