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- Title
Evaluation of the Best Management Practices for Reducing Phosphorus Load in a Watershed in Terms of Cost and Greenhouse Gas Emissions.
- Authors
Jeong, Dae Seong; Kim, Joon Ha; Kim, Jin Hwi; Park, Yongeun
- Abstract
Effective management of water quality in watersheds is crucial because it is directly linked to the sustainability of aquatic ecosystems. In conventional watershed management, best management practices (BMPs) have been instrumental in addressing deteriorating water quality issues caused by non-point source pollution. Greenhouse gas (GHG) emissions have emerged as a global concern, necessitating immediate and diverse environmental actions to mitigate their impacts. This study aims to explore BMPs that maximize total phosphorus (TP) load removal efficiencies, while minimizing costs and GHG emissions within watersheds, using the Soil and Water Assessment Tool (SWAT) and non-dominated sorting genetic algorithm III (NSGA-III). The Yeongsan River Watershed between 2012 and 2021 was selected as the study area. Hydrological and BMP data were analyzed. Applying identical BMPs to the watershed showed that the BMPs with high TP removal efficiency may not be effective in terms of cost and GHG emissions. Therefore, the optimal combination of BMPs for the Yeongsan River Watershed was determined using NSGA-III considering TP removal efficiency, cost, and GHG emissions. This study is the first to consider GHG emissions at the watershed level when applying BMPs and is expected to contribute to the development of BMP implementation incorporating GHG emissions.
- Subjects
GREENHOUSE gases; BEST management practices (Pollution prevention); WATER quality management; NONPOINT source pollution; WATERSHEDS; BEST practices; WATERSHED management; TOTAL maximum daily load for water pollutants
- Publication
Agronomy, 2024, Vol 14, Issue 5, p906
- ISSN
2073-4395
- Publication type
Article
- DOI
10.3390/agronomy14050906