Soil Erosion Potential Model in Tropical Catchment
<p id="p1">Soil erosion is a significant environmental challenge, especially in tropical regions where heavy rainfall and land use changes accelerate soil degradation. Effective land management and conservation strategies require understanding and predicting soil erosion potential. This study presen...
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| Autores principales: | , , |
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| Formato: | Capítulo de libro |
| Lenguaje: | inglés |
| Publicado: |
IntechOpen
2025
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| Materias: | |
| Acceso en línea: | https://www.intechopen.com/chapters/1201774 |
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| Sumario: | <p id="p1">Soil erosion is a significant environmental challenge, especially in tropical regions where heavy rainfall and land use changes accelerate soil degradation. Effective land management and conservation strategies require understanding and predicting soil erosion potential. This study presents a Soil Erosion Potential Model (SEPM) tailored for tropical catchments, integrating remote sensing and Geographic Information Systems (GIS) with the Revised Universal Soil Loss Equation (RUSLE). The Ulu Kinta Catchment in Malaysia, spanning 30,752 hectares and linked to the Ulu Kinta Dam in Ipoh, serves as a case study. To estimate the Rainfall (R) factor, rainfall data was correlated with topographical variables using rain gauge data and the downscaled tropical rainfall measuring mission (TRMM) 3B43 dataset over 11 years. Fieldwork involved soil sampling to determine the Soil Erodibility (K) factor. Shuttle radar topography mission (SRTM) data assessed topographical effects through Digital Elevation Models (DEMs), and Normalized Different Vegetation Index (NDVI) alongside Land Use/Land Cover (LULC) data from SPOT5 imagery was used to estimate the Cover (C) and Support Practice (P) factors. The annual soil erosion map indicated a mean erosion rate of 34.72 tons per hectare per year, peaking at 150 tons per hectare per year, associated with steep slopes, high rainfall, and insufficient support practices. Alarmingly, 19.98% of the catchment experienced severe to extremely severe erosion rates. The SEPM model was validated against previous studies, achieving a validation rate of 71.9%, demonstrating a reasonable correlation with similar research.</p> |
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| ISBN: | 978-0-85466-260-9 |
| DOI: | 10.5772/intechopen.1008237 |