Abstract
The Integrated Nitrogen in CAtchments model (INCA) was applied to the River Dee, Aberdeenshire, NE Scotland. To a first approximation the model was able to simulate the annual mean streamwater NO3-N concentrations observed along the length of the main channel. This provided the basis for using INCA to subsequently explore the effects of N deposition and land use management on streamwater NO3-N concentrations and loads. On an annual timescale, the model predictions suggest that NO3-N concentrations will decrease by 5% following a 20% reduction in fertiliser application. Furthermore, model results also suggest that a 50% increase in N deposition will cause a 15% increase in the streamwater NO3-N concentrations. The utility of INCA as a tool for catchment management is discussed, current limitations are highlighted and possible improvements are suggested. (C) 2001 Elsevier Science B.V. All rights reserved.
Original language | English |
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Pages (from-to) | 229-252 |
Number of pages | 24 |
Journal | Science of the Total Environment |
Volume | 265 |
Issue number | 1-3 |
DOIs | |
Publication status | Published - 29 Jan 2001 |
Keywords
- basin management
- hydrochemistry
- scale models
- nitrogen
- INCA model
- land ocean interaction
- multiple source assessment
- surface waters
- Scottish catchment
- critical loads
- Great-Britain
- river basins
- North-Sea
- management
- deposition