Climate Change Impacts on Soil Erosion and Sediment Yield in a Watershed
| Autor: | Ching-Nuo Chen, Samkele S. Tfwala, Chih-Heng Tsai |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Hydrology
lcsh:TD201-500 geography soil erosion lcsh:Hydraulic engineering geography.geographical_feature_category Watershed Geography Planning and Development Drainage basin Climate change Sediment Aquatic Science Biochemistry sediment yield Deposition (geology) climate change lcsh:Water supply for domestic and industrial purposes lcsh:TC1-978 Climate change scenario PSED Model Erosion Environmental science Sediment transport Water Science and Technology |
| Zdroj: | Water, Vol 12, Iss 2247, p 2247 (2020) Water Volume 12 Issue 8 |
| ISSN: | 2073-4441 |
| DOI: | 10.3390/w12082247 |
| Popis: | This study analyzed the influence of climate change on sediment yield variation, sediment transport and erosion deposition distribution at the watershed scale. The study was based on Gaoping River basin, which is among the largest basins in southern Taiwan. To carry out this analysis, the Physiographic Soil Erosion Deposition (PSED) model was utilized. Model results showed a general increase in soil erosion and deposition volume under the A1B-S climate change scenario. The situation is even worsened with increasing return periods. Total erosion volume and total sediment yield in the watershed were increased by 4&ndash 25% and 8&ndash 65%, respectively, and deposition volumes increased by 2&ndash 23%. The study showed how climate change variability would influence the watershed through increased sediment yields, which might even worsen the impacts of natural disasters. It has further illustrated the importance of incorporating climate change into river management projects. |
| Databáze: | OpenAIRE |
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