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Assessing the effect of urbanization on regional-scale surface water-groundwater interaction and nitrate transport
Identifying regional-scale surface water-groundwater interactions (SGI) is vital for predicting anthropogenic effects on surface water bodies and underlying aquifers. However, large-scale water and nutrient flux studies rely on surface water or groundwater-focused models. This study aims to model th...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9307516/ https://www.ncbi.nlm.nih.gov/pubmed/35869141 http://dx.doi.org/10.1038/s41598-022-16134-1 |
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author | Yifru, Bisrat Ayalew Chung, Il-Moon Kim, Min-Gyu Chang, Sun Woo |
author_facet | Yifru, Bisrat Ayalew Chung, Il-Moon Kim, Min-Gyu Chang, Sun Woo |
author_sort | Yifru, Bisrat Ayalew |
collection | PubMed |
description | Identifying regional-scale surface water-groundwater interactions (SGI) is vital for predicting anthropogenic effects on surface water bodies and underlying aquifers. However, large-scale water and nutrient flux studies rely on surface water or groundwater-focused models. This study aims to model the effect of urbanization, which is usually accompanied by high groundwater abstraction and surface water pollution, particularly in the developing world, on a regional-scale SGI and nitrate loading. In the study area, the urban expansion increased by over 3% in the last decade. The integrated SWAT-MODFLOW model, Soil and Water Assessment Tool (SWAT) and Modular Finite-Difference Groundwater Flow (MODFLOW) coupling code, was used to assess SGI. By coupling SWAT-MODFLOW with Reactive Transport in 3-Dimensions, the nutrient loading to the river from point and non-point sources was also modeled. Basin average annual results show that groundwater discharge declined with increasing groundwater abstraction and increased with Land use/Land cover (LULC) changes. Groundwater recharge decreased significantly in the Belge season (February to May), and the river seepage and groundwater discharge decreased correspondingly. High spatiotemporal changes in SGI and nitrate loading were found under the combined LULC and groundwater abstraction scenarios. The water yield decreased by 15%. In a large part of the region, the nitrate loading increased by 17–250%. Seasonally controlled groundwater abstraction and water quality monitoring are essential in this region. |
format | Online Article Text |
id | pubmed-9307516 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-93075162022-07-24 Assessing the effect of urbanization on regional-scale surface water-groundwater interaction and nitrate transport Yifru, Bisrat Ayalew Chung, Il-Moon Kim, Min-Gyu Chang, Sun Woo Sci Rep Article Identifying regional-scale surface water-groundwater interactions (SGI) is vital for predicting anthropogenic effects on surface water bodies and underlying aquifers. However, large-scale water and nutrient flux studies rely on surface water or groundwater-focused models. This study aims to model the effect of urbanization, which is usually accompanied by high groundwater abstraction and surface water pollution, particularly in the developing world, on a regional-scale SGI and nitrate loading. In the study area, the urban expansion increased by over 3% in the last decade. The integrated SWAT-MODFLOW model, Soil and Water Assessment Tool (SWAT) and Modular Finite-Difference Groundwater Flow (MODFLOW) coupling code, was used to assess SGI. By coupling SWAT-MODFLOW with Reactive Transport in 3-Dimensions, the nutrient loading to the river from point and non-point sources was also modeled. Basin average annual results show that groundwater discharge declined with increasing groundwater abstraction and increased with Land use/Land cover (LULC) changes. Groundwater recharge decreased significantly in the Belge season (February to May), and the river seepage and groundwater discharge decreased correspondingly. High spatiotemporal changes in SGI and nitrate loading were found under the combined LULC and groundwater abstraction scenarios. The water yield decreased by 15%. In a large part of the region, the nitrate loading increased by 17–250%. Seasonally controlled groundwater abstraction and water quality monitoring are essential in this region. Nature Publishing Group UK 2022-07-22 /pmc/articles/PMC9307516/ /pubmed/35869141 http://dx.doi.org/10.1038/s41598-022-16134-1 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Yifru, Bisrat Ayalew Chung, Il-Moon Kim, Min-Gyu Chang, Sun Woo Assessing the effect of urbanization on regional-scale surface water-groundwater interaction and nitrate transport |
title | Assessing the effect of urbanization on regional-scale surface water-groundwater interaction and nitrate transport |
title_full | Assessing the effect of urbanization on regional-scale surface water-groundwater interaction and nitrate transport |
title_fullStr | Assessing the effect of urbanization on regional-scale surface water-groundwater interaction and nitrate transport |
title_full_unstemmed | Assessing the effect of urbanization on regional-scale surface water-groundwater interaction and nitrate transport |
title_short | Assessing the effect of urbanization on regional-scale surface water-groundwater interaction and nitrate transport |
title_sort | assessing the effect of urbanization on regional-scale surface water-groundwater interaction and nitrate transport |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9307516/ https://www.ncbi.nlm.nih.gov/pubmed/35869141 http://dx.doi.org/10.1038/s41598-022-16134-1 |
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