Application of a conceptual catchment scale nitrate transport model on two rural river basins

Y. Van Herpe, Peter A Troch, L. Callewier, P. F. Quinn

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

A conceptual catchment scale model for simulating nitrate transport in rural river basins has been developed. The model consists of a hydrological part based on the TOPMODEL and a nitrate-leaching module. This module consists of two functions: the SLIM-concept controlling the release of nitrate from the soil root zone and second, a transfer function based on the 'flushing hypothesis' controlling the appearance of nitrate in the stream channel network. The SLIM-concept divides the soil into layers with mobile and immobile categories of water and dissolved solids. Movement of water and dissolved solids between the different layers occurs in response to effective rainfall. The transfer function defines a proportional relation between the decline in catchment mean groundwater table and the nitrate concentrations in the stream channel network. Comparison with field data shows reliable simulation results for two different rural catchments, although improvements can be expected when topographical data and field data on the nitrate content in the soil profile at the onset of winter drainage are taken into account.

Original languageEnglish (US)
Pages (from-to)569-577
Number of pages9
JournalEnvironmental Pollution
Volume102
Issue numberSUPPL. 1
DOIs
StatePublished - 1998
Externally publishedYes

Fingerprint

Rivers
Nitrates
Catchments
river basin
catchment
nitrate
Soil
stream channel
transfer function
Soils
Transfer functions
Water Movements
Water
Groundwater
flushing
Leaching
Drainage
Rain
soil profile
rhizosphere

Keywords

  • Agriculture
  • Catchment scale
  • Conceptual model
  • Nitrate transport
  • Soil-water interactions

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry
  • Pollution

Cite this

Application of a conceptual catchment scale nitrate transport model on two rural river basins. / Van Herpe, Y.; Troch, Peter A; Callewier, L.; Quinn, P. F.

In: Environmental Pollution, Vol. 102, No. SUPPL. 1, 1998, p. 569-577.

Research output: Contribution to journalArticle

Van Herpe, Y. ; Troch, Peter A ; Callewier, L. ; Quinn, P. F. / Application of a conceptual catchment scale nitrate transport model on two rural river basins. In: Environmental Pollution. 1998 ; Vol. 102, No. SUPPL. 1. pp. 569-577.
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