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| Titel |
Predicting land-use change and its impact on the groundwater system of the Kleine Nete catchment, Belgium |
| VerfasserIn |
J. Dams, S. T. Woldeamlak, O. Batelaan |
| 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 ; 12, no. 6 ; Nr. 12, no. 6 (2008-12-15), S.1369-1385 |
| Datensatznummer |
250010963
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| Publikation (Nr.) |
 copernicus.org/hess-12-1369-2008.pdf |
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| Zusammenfassung |
| Land-use changes are frequently indicated to be one of the main human-induced
factors influencing the groundwater system. For land-use change, groundwater
research has mainly focused on the change in water quality thereby neglecting
changes in quantity. The objective of this paper is to assess the impact of
land-use changes, from 2000 until 2020, on the hydrological balance and in
particular on groundwater quantity, as results from a case study in the Kleine
Nete basin, Belgium. New is that this study tests a methodology, which couples
a land-use change model with a water balance and a steady-state groundwater model.
Four future land-use scenarios (A1, A2, B1 and B2) based on the Special Report on
Emission Scenarios (SRES) are modelled with the CLUE-S model. Water balance
components, groundwater level and baseflow are simulated using the WetSpass
model in conjunction with a steady-state MODFLOW groundwater flow model.
Results show that the average recharge decreases with 2.9, 1.6, 1.8 and 0.8%
for scenario A1, A2, B1 and B2, respectively, over the 20 covered years. The
predicted reduction in recharge results in a small decrease of the average
groundwater level in the basin, ranging from 2.5 cm for scenario A1 to 0.9 cm
for scenario B2, and a reduction of the baseflow with maximum 2.3% and
minimum 0.7% for scenario A1 and B2, respectively. Although these averages
appear to indicate small changes in the groundwater system, spatial analysis
shows that much larger changes are located near the major cities in the study
area. Hence, spatial planning should take better account of effects of land-use
change on the groundwater system and define mitigating actions for reducing
the negative impacts of land-use change. |
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