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| Titel |
Uncertainties of soil parameterisation in process-based simulation of distributed flood control measures |
| VerfasserIn |
W. Rieger, F. Winter, M. Disse |
| 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 (2010-10-08), S.121-129 |
| Datensatznummer |
250016348
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| Publikation (Nr.) |
 copernicus.org/adgeo-27-121-2010.pdf |
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| Zusammenfassung |
| Distributed flood control measures such as land-use changes or differing soil
tillage practices which affect the runoff generation process, are hard to
simulate physically based due to a high degree of uncertainty with regard to
soil parameterisation. In this study the physically based rainfall runoff
model WaSiM-ETH (Version 8.4.2) was used with a multi-layered vegetation and
soil parameterisation. The modelling area was the meso-scaled and rurally
characterised Windach catchment. In addition, soil measurement datasets were
compared to demonstrate the uncertainties in soil parameterisation of
physically based models. The datasets were gained from the hillslope scale at
the Scheyern research farm with similar soil conditions to the Windach
catchment. While parameterising and calibrating the model, seven different
pedotransfer functions were used with strong influence on the simulated
hydrographs. The differing bulk densities of soils depending on land-use and
soil tillage must be taken into consideration due to their high impact on
modelling results, and they also offer a comprehensive way to model
distributed flood control measures. These measures have noticeable effects on
flood events under HQ10, especially if the land-use type which is
affected by the distributed flood control measure is the dominating land-use
form in the catchment area. To account for the variability of soils in the
investigation area of Scheyern, different approaches were applied to estimate
soil hydraulic properties and saturated hydraulic conductivity, and were
compared to field measurements. |
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