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| Titel |
Effects of watershed and riparian zone characteristics on nutrient concentrations in the River Scheldt Basin |
| VerfasserIn |
J. Meynendonckx, G. Heuvelmans, B. Muys, J. Feyen |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 10, no. 6 ; Nr. 10, no. 6 (2006-11-28), S.913-922 |
| Datensatznummer |
250008292
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| Publikation (Nr.) |
 copernicus.org/hess-10-913-2006.pdf |
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| Zusammenfassung |
| The relative influence of a set of watershed characteristics on surface
water nutrient concentrations was examined in 173 watersheds within two
subcatchments (Upper-Scheldt and Nete) of the River Scheldt Basin (Flanders,
Belgium). Each watershed was described by seasonal rainfall, discharge
loading of point sources, morphological characteristics (area, average
slope, drainage density, elongation), land use and soil properties (soil
texture and drainage). Partial regression analysis revealed that soil
drainage variables had the strongest influence on nutrient concentrations.
Additional influence was exerted by land use and point source loading
variables. Nitrate concentrations were positively correlated with effluent
loadings coming from wastewater treatment plants and with the area of
agricultural land. Phosphate concentrations were best explained by effluent
loadings of industrial point sources and by the area of urban land. Land use
close to the river was not a better predictor of nitrate and phosphate
concentrations than land use away from the river. This suggests that the
mediating impact of riparian zones is rather explained by the hydrologic
pathways within the buffer strip. |
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