Mapping soil erosion potential and risk for slope land in a watershed
Abstract The physiographic soil erosion–deposition (PSED) Model was used to simulate and measure soil erosion dynamics in the Gaoping River Basin, analysing 215 rainfall events from 1996 to 2020. Soil erosion potential and risk maps were generated, illustrating a positive correlation between soil er...
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Springer
2025-03-01
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| Series: | Terrestrial, Atmospheric and Oceanic Sciences |
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| Online Access: | https://doi.org/10.1007/s44195-025-00089-7 |
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| author | Ching-Nuo Chen |
| author_facet | Ching-Nuo Chen |
| author_sort | Ching-Nuo Chen |
| collection | DOAJ |
| description | Abstract The physiographic soil erosion–deposition (PSED) Model was used to simulate and measure soil erosion dynamics in the Gaoping River Basin, analysing 215 rainfall events from 1996 to 2020. Soil erosion potential and risk maps were generated, illustrating a positive correlation between soil erosion amounts and cumulative rainfall. Notably, when accumulated rainfall exceeds 1000 mm, there is a significant increase in severe and extremely severe erosion, with average soil erosion rates markedly higher than at lower rainfall levels. Our results indicate that on slopes > 35°, areas experiencing severe and extremely severe erosion increase with rainfall. Specifically, the ratios of extremely severe and severely eroded areas to slopes exceeding 35° for accumulated rainfall over 1000 mm are 15.97% and 8.41%, respectively. Locations prone to landslides are particularly vulnerable to severe and extremely severe erosion, with the extent of such erosion intensifying as rainfall increases. Conversely, for rainfall events with accumulated totals below 500 mm, occurrences of severe or extremely severe erosion at high-risk levels barely exist. However, when cumulative rainfall exceeds 500 mm, there is a significant development of high-risk and extremely high-risk erosion zones, with erosion severity increasing alongside increased rainfall amounts. The erosion potential and risk maps developed in this study provide critical insights for identifying high-risk areas within the watershed, which are essential for effective watershed management strategies. |
| format | Article |
| id | doaj-art-3204a090ffb5487c80f88bb421eedafd |
| institution | DOAJ |
| issn | 1017-0839 2311-7680 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Springer |
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| series | Terrestrial, Atmospheric and Oceanic Sciences |
| spelling | doaj-art-3204a090ffb5487c80f88bb421eedafd2025-08-20T02:56:06ZengSpringerTerrestrial, Atmospheric and Oceanic Sciences1017-08392311-76802025-03-0136112410.1007/s44195-025-00089-7Mapping soil erosion potential and risk for slope land in a watershedChing-Nuo Chen0Department of Civil Engineering, National Pingtung University of Science and TechnologyAbstract The physiographic soil erosion–deposition (PSED) Model was used to simulate and measure soil erosion dynamics in the Gaoping River Basin, analysing 215 rainfall events from 1996 to 2020. Soil erosion potential and risk maps were generated, illustrating a positive correlation between soil erosion amounts and cumulative rainfall. Notably, when accumulated rainfall exceeds 1000 mm, there is a significant increase in severe and extremely severe erosion, with average soil erosion rates markedly higher than at lower rainfall levels. Our results indicate that on slopes > 35°, areas experiencing severe and extremely severe erosion increase with rainfall. Specifically, the ratios of extremely severe and severely eroded areas to slopes exceeding 35° for accumulated rainfall over 1000 mm are 15.97% and 8.41%, respectively. Locations prone to landslides are particularly vulnerable to severe and extremely severe erosion, with the extent of such erosion intensifying as rainfall increases. Conversely, for rainfall events with accumulated totals below 500 mm, occurrences of severe or extremely severe erosion at high-risk levels barely exist. However, when cumulative rainfall exceeds 500 mm, there is a significant development of high-risk and extremely high-risk erosion zones, with erosion severity increasing alongside increased rainfall amounts. The erosion potential and risk maps developed in this study provide critical insights for identifying high-risk areas within the watershed, which are essential for effective watershed management strategies.https://doi.org/10.1007/s44195-025-00089-7Physiographic soil erosion–deposition model (PSED model)Erosion potential mapErosion risk map |
| spellingShingle | Ching-Nuo Chen Mapping soil erosion potential and risk for slope land in a watershed Terrestrial, Atmospheric and Oceanic Sciences Physiographic soil erosion–deposition model (PSED model) Erosion potential map Erosion risk map |
| title | Mapping soil erosion potential and risk for slope land in a watershed |
| title_full | Mapping soil erosion potential and risk for slope land in a watershed |
| title_fullStr | Mapping soil erosion potential and risk for slope land in a watershed |
| title_full_unstemmed | Mapping soil erosion potential and risk for slope land in a watershed |
| title_short | Mapping soil erosion potential and risk for slope land in a watershed |
| title_sort | mapping soil erosion potential and risk for slope land in a watershed |
| topic | Physiographic soil erosion–deposition model (PSED model) Erosion potential map Erosion risk map |
| url | https://doi.org/10.1007/s44195-025-00089-7 |
| work_keys_str_mv | AT chingnuochen mappingsoilerosionpotentialandriskforslopelandinawatershed |