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| Titel |
Modelling of long term nitrogen retention in surface waters |
| VerfasserIn |
S. Halbfaß, M. Gebel, S. Bürger |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrologic Modelling for the Assessment of Ecosystem Services and Landscape Functions ; Nr. 27 (2010-12-09), S.145-148 |
| Datensatznummer |
250016351
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| Publikation (Nr.) |
 copernicus.org/adgeo-27-145-2010.pdf |
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| Zusammenfassung |
| In order to derive measures to reduce nutrient loadings into waters in
Saxony, we calculated nitrogen inputs with the model STOFFBILANZ on the
regional scale. Thereby we have to compare our modelling results to measured
loadings at the river basin outlets, considering long term nutrient retention
in surface waters. The most important mechanism of nitrogen retention is the
denitrification in the contact zone of water and sediment, being controlled
by hydraulic and micro-biological processes. Retention capacity is derived on
the basis of the nutrient spiralling concept, using water residence time
(hydraulic aspect) and time-specific N-uptake by microorganisms (biological
aspect). Short time related processes of mobilization and immobilization are
neglected, because they are of minor importance for the derivation of
measures on the regional scale. |
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