Wetland Management in Recharge Regions of Regional Groundwater Flow Systems with Water Shortage, Nyírség Region, Hungary
Climate change and increasing human impacts are more emphasised in recharge regions, where the main flow direction is downward, resulting in negative water balance. Two wetlands located in the recharge position of regional groundwater flow systems were investigated in the Nyírség region, Hungary, as...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/15/20/3589 |
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| author | Szilvia Simon Judit Déri-Takács Márk Szijártó László Szél Judit Mádl-Szőnyi |
| author_facet | Szilvia Simon Judit Déri-Takács Márk Szijártó László Szél Judit Mádl-Szőnyi |
| author_sort | Szilvia Simon |
| collection | DOAJ |
| description | Climate change and increasing human impacts are more emphasised in recharge regions, where the main flow direction is downward, resulting in negative water balance. Two wetlands located in the recharge position of regional groundwater flow systems were investigated in the Nyírség region, Hungary, as pilot areas for representing wetlands in similar hydraulic positions. Hydraulic data processes, chemical data evaluations, and numerical simulations revealed that the wetlands are fed via local flow systems, superimposing regional-scale recharge conditions in the area. The wetlands are discharge and flow-through types in connection with local flow systems. Nevertheless, in the case of significant regional water table decline—due to the high vulnerability of recharge areas to climate change—local flows are degraded, so they are not able to sustain the wetlands. To preserve the groundwater-dependent ecosystems in the areas, water retention at the local recharge areas of the wetlands may help in the mitigation of water level decline under present-day conditions. If the regional water table continues to decline, comprehensive water retention solutions are needed in the whole region. The results highlight that understanding the natural wetland–groundwater interactions at different scales is crucial for the preservation of wetlands and for successful water retention planning. |
| first_indexed | 2024-03-10T20:48:29Z |
| format | Article |
| id | doaj.art-0c54650ca9a249b7a1a2e8001d1ba038 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T20:48:29Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-0c54650ca9a249b7a1a2e8001d1ba0382023-11-19T18:29:52ZengMDPI AGWater2073-44412023-10-011520358910.3390/w15203589Wetland Management in Recharge Regions of Regional Groundwater Flow Systems with Water Shortage, Nyírség Region, HungarySzilvia Simon0Judit Déri-Takács1Márk Szijártó2László Szél3Judit Mádl-Szőnyi4József and Erzsébet Tóth Endowed Hydrogeology Chair, Department of Geology, Institute of Geography and Earth Sciences, ELTE Eötvös Loránd University, 1117 Budapest, HungaryJózsef and Erzsébet Tóth Endowed Hydrogeology Chair, Department of Geology, Institute of Geography and Earth Sciences, ELTE Eötvös Loránd University, 1117 Budapest, HungaryDepartment of Geophysics and Space Science, Institute of Geography and Earth Sciences, ELTE Eötvös Loránd University, 1117 Budapest, HungaryHortobágy National Park Directorate, 4024 Debrecen, HungaryJózsef and Erzsébet Tóth Endowed Hydrogeology Chair, Department of Geology, Institute of Geography and Earth Sciences, ELTE Eötvös Loránd University, 1117 Budapest, HungaryClimate change and increasing human impacts are more emphasised in recharge regions, where the main flow direction is downward, resulting in negative water balance. Two wetlands located in the recharge position of regional groundwater flow systems were investigated in the Nyírség region, Hungary, as pilot areas for representing wetlands in similar hydraulic positions. Hydraulic data processes, chemical data evaluations, and numerical simulations revealed that the wetlands are fed via local flow systems, superimposing regional-scale recharge conditions in the area. The wetlands are discharge and flow-through types in connection with local flow systems. Nevertheless, in the case of significant regional water table decline—due to the high vulnerability of recharge areas to climate change—local flows are degraded, so they are not able to sustain the wetlands. To preserve the groundwater-dependent ecosystems in the areas, water retention at the local recharge areas of the wetlands may help in the mitigation of water level decline under present-day conditions. If the regional water table continues to decline, comprehensive water retention solutions are needed in the whole region. The results highlight that understanding the natural wetland–groundwater interactions at different scales is crucial for the preservation of wetlands and for successful water retention planning.https://www.mdpi.com/2073-4441/15/20/3589wetlandregional groundwater flow systemwater retentionwater shortage |
| spellingShingle | Szilvia Simon Judit Déri-Takács Márk Szijártó László Szél Judit Mádl-Szőnyi Wetland Management in Recharge Regions of Regional Groundwater Flow Systems with Water Shortage, Nyírség Region, Hungary Water wetland regional groundwater flow system water retention water shortage |
| title | Wetland Management in Recharge Regions of Regional Groundwater Flow Systems with Water Shortage, Nyírség Region, Hungary |
| title_full | Wetland Management in Recharge Regions of Regional Groundwater Flow Systems with Water Shortage, Nyírség Region, Hungary |
| title_fullStr | Wetland Management in Recharge Regions of Regional Groundwater Flow Systems with Water Shortage, Nyírség Region, Hungary |
| title_full_unstemmed | Wetland Management in Recharge Regions of Regional Groundwater Flow Systems with Water Shortage, Nyírség Region, Hungary |
| title_short | Wetland Management in Recharge Regions of Regional Groundwater Flow Systems with Water Shortage, Nyírség Region, Hungary |
| title_sort | wetland management in recharge regions of regional groundwater flow systems with water shortage nyirseg region hungary |
| topic | wetland regional groundwater flow system water retention water shortage |
| url | https://www.mdpi.com/2073-4441/15/20/3589 |
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