Water quality management could cost-effectively halve future water scarcity considering the Pearl River Basin
[EN] Reducing water scarcity requires both mitigation of the increasing water pollution and adaptation to the changing availability and demand of water resources under global change. However, state-of-the-art water scarcity modeling efforts often ignore water quality and associated biogeochemical pr...
| Autores: | , , , , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2024 |
| País: | España |
| Recursos: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/224391 |
| Acesso em linha: | https://riunet.upv.es/handle/10251/224391 |
| Access Level: | acceso abierto |
| Palavra-chave: | Water scarcity MARINA-cost optimization modeling RCP-SSP climate scenarios |
| Resumo: | [EN] Reducing water scarcity requires both mitigation of the increasing water pollution and adaptation to the changing availability and demand of water resources under global change. However, state-of-the-art water scarcity modeling efforts often ignore water quality and associated biogeochemical processesinthedesignofwaterscarcityreductionmeasures.Here,weidentify cost-effective options for reducing future water scarcity by accounting for waterquantity andqualityinthehighlywaterstressedandpollutedPearlRiver BasininChinaundervarioussocio-economic and climatic change scenarios based on the Shared Socio-economic Pathways (SSPs) and Representative Concentration Pathways (RCPs). Our modeling approach integrates a nutrient model (MARINA-Nutrients) with a cost-optimization procedure, considering biogeochemistry and human activities on land in a spatially explicit way. Results indicate that future water scarcity is expected to increase by a factor of four in most parts of the Pearl River Basin by 2050 under the RCP8.5-SSP5 scenario. Results also show that water quality management options could half future water scarcity in a cost-effective way. Our analysis could serve as an example of water scarcity assessment for other highly water stressed and polluted river basins around the world and inform the design of cost-effective measures to reduce water scarcity. |
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