Evaluating the Impacts of Rice-Based Protection Dykes on Floodwater Dynamics in the Vietnamese Mekong Delta Using Geographical Impact Factor (GIF)
This study aims at evaluating the geographical influences of rice-based protection dykes on floodwater regimes along the main rivers, namely the Mekong and the Bassac, in the Vietnamese Mekong Delta (VMD). Specifically, numerous low dykes and high dykes have been constructed particularly in the uppe...
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| Language: | English |
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MDPI AG
2021-04-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/13/9/1144 |
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| author | Hoang Thai Duong Vu Van Cong Trinh Dung Duc Tran Peter Oberle Stefan Hinz Franz Nestmann |
| author_facet | Hoang Thai Duong Vu Van Cong Trinh Dung Duc Tran Peter Oberle Stefan Hinz Franz Nestmann |
| author_sort | Hoang Thai Duong Vu |
| collection | DOAJ |
| description | This study aims at evaluating the geographical influences of rice-based protection dykes on floodwater regimes along the main rivers, namely the Mekong and the Bassac, in the Vietnamese Mekong Delta (VMD). Specifically, numerous low dykes and high dykes have been constructed particularly in the upper delta’s floodplains to protect the double and triple rice cropping against the annual flooding. For the whole deltaic domain, a 1D-quasi-2D hydrodynamic model setup was used to simulate seventy-two (72) scenarios of dyke construction development in the context of low, medium, and high floods that occurred in the VMD to examine the effects of different flood magnitudes on a certain dyke construction area. Based on the model simulation results, we established an evaluation indicator, the so-called Geographical Impact Factor (GIF), to evaluate the impacts of zone-based dyke compartments on the floodwater regimes along the main rivers for different kinds of floods. Our findings revealed different rates of influences on the floodwater levels along the Mekong and Bassac Rivers under different scenarios of zone-based high-dyke developments. GIF is a useful index for scientists and decision-makers in land use planning, especially in rice intensification, in conjunction with flood management for the VMD and for similar deltas worldwide. |
| first_indexed | 2024-03-10T12:07:01Z |
| format | Article |
| id | doaj.art-c5116dc1033c4c3e992796907f6d7f8e |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T12:07:01Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-c5116dc1033c4c3e992796907f6d7f8e2023-11-21T16:31:08ZengMDPI AGWater2073-44412021-04-01139114410.3390/w13091144Evaluating the Impacts of Rice-Based Protection Dykes on Floodwater Dynamics in the Vietnamese Mekong Delta Using Geographical Impact Factor (GIF)Hoang Thai Duong Vu0Van Cong Trinh1Dung Duc Tran2Peter Oberle3Stefan Hinz4Franz Nestmann5Karlsruhe Institute of Technology, Kaiserstraße 12, 76131 Karlsruhe, GermanyMekong Water Technology Innovation Institute, 72 Tran Van Danh, Ward 13, Tan Binh dist., Ho Chi Minh City 700000, VietnamCenter of Water Management and Climate Change, Institute for Environment and Resources, Vietnam National University Ho Chi Minh City (VNU-HCM), Ho Chi Minh City 700000, VietnamKarlsruhe Institute of Technology, Kaiserstraße 12, 76131 Karlsruhe, GermanyKarlsruhe Institute of Technology, Kaiserstraße 12, 76131 Karlsruhe, GermanyKarlsruhe Institute of Technology, Kaiserstraße 12, 76131 Karlsruhe, GermanyThis study aims at evaluating the geographical influences of rice-based protection dykes on floodwater regimes along the main rivers, namely the Mekong and the Bassac, in the Vietnamese Mekong Delta (VMD). Specifically, numerous low dykes and high dykes have been constructed particularly in the upper delta’s floodplains to protect the double and triple rice cropping against the annual flooding. For the whole deltaic domain, a 1D-quasi-2D hydrodynamic model setup was used to simulate seventy-two (72) scenarios of dyke construction development in the context of low, medium, and high floods that occurred in the VMD to examine the effects of different flood magnitudes on a certain dyke construction area. Based on the model simulation results, we established an evaluation indicator, the so-called Geographical Impact Factor (GIF), to evaluate the impacts of zone-based dyke compartments on the floodwater regimes along the main rivers for different kinds of floods. Our findings revealed different rates of influences on the floodwater levels along the Mekong and Bassac Rivers under different scenarios of zone-based high-dyke developments. GIF is a useful index for scientists and decision-makers in land use planning, especially in rice intensification, in conjunction with flood management for the VMD and for similar deltas worldwide.https://www.mdpi.com/2073-4441/13/9/1144Mekong Deltaricedyke systemhydrodynamic modelgeographical impact factor |
| spellingShingle | Hoang Thai Duong Vu Van Cong Trinh Dung Duc Tran Peter Oberle Stefan Hinz Franz Nestmann Evaluating the Impacts of Rice-Based Protection Dykes on Floodwater Dynamics in the Vietnamese Mekong Delta Using Geographical Impact Factor (GIF) Water Mekong Delta rice dyke system hydrodynamic model geographical impact factor |
| title | Evaluating the Impacts of Rice-Based Protection Dykes on Floodwater Dynamics in the Vietnamese Mekong Delta Using Geographical Impact Factor (GIF) |
| title_full | Evaluating the Impacts of Rice-Based Protection Dykes on Floodwater Dynamics in the Vietnamese Mekong Delta Using Geographical Impact Factor (GIF) |
| title_fullStr | Evaluating the Impacts of Rice-Based Protection Dykes on Floodwater Dynamics in the Vietnamese Mekong Delta Using Geographical Impact Factor (GIF) |
| title_full_unstemmed | Evaluating the Impacts of Rice-Based Protection Dykes on Floodwater Dynamics in the Vietnamese Mekong Delta Using Geographical Impact Factor (GIF) |
| title_short | Evaluating the Impacts of Rice-Based Protection Dykes on Floodwater Dynamics in the Vietnamese Mekong Delta Using Geographical Impact Factor (GIF) |
| title_sort | evaluating the impacts of rice based protection dykes on floodwater dynamics in the vietnamese mekong delta using geographical impact factor gif |
| topic | Mekong Delta rice dyke system hydrodynamic model geographical impact factor |
| url | https://www.mdpi.com/2073-4441/13/9/1144 |
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