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| Titel |
Modelling historical and current irrigation water demand on the continental scale: Europe |
| VerfasserIn |
T. Aus der Beek, M. Flörke, D. M. Lapola, R. Schaldach, F. Voß, E. Teichert |
| 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 (2010-09-07), S.79-85 |
| Datensatznummer |
250016343
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| Publikation (Nr.) |
 copernicus.org/adgeo-27-79-2010.pdf |
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| Zusammenfassung |
| Water abstractions for irrigation purposes are higher than for any other
pan-European water use sector and have a large influence on river runoff
regimes. This modelling experiment assesses historic and current irrigation
water demands for different crops in five arc minute spatial resolution for
pan-Europe. Two different modelling frameworks have been applied in this
study. First, soft-coupling the dynamic vegetation model LPJmL with the land
use model LandSHIFT leads to overestimations of national irrigation water
demands, which are rather high in the southern Mediterranean countries. This
can be explained by unlimited water supply in the model structure and illegal
or not gauged water abstractions in the reported data sets. The second
modelling framework is WaterGAP3, which has an integrated conceptual crop
specific irrigation module. Irrigation water requirements as modelled with
WaterGAP3 feature a more realistic representation of pan-European water
withdrawals. However, in colder humid regions, irrigation water demands are
often underestimated. Additionally, a national database on crop-specific
irrigated area and water withdrawal for all 42 countries within pan-Europe
has been set up and integrated in both model frameworks. |
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