K, Sujay and Hegde, Venkatraman S. (2024) Assessment of sub-watershed for soil erosion threat in a semi-arid region watershed (Bennihalla) of North Karnataka using morphometric analysis and geo-computational approach. Journal of Tianjin University Science and Technology, 57 (10). pp. 136-157. ISSN 0493-2137
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ASSESSMENT_ OF _SUB_WATERSHED_FOR SOIL _EROSION.pdf - Published Version Restricted to Registered users only Download (1MB) |
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| Abstract: | Understanding the risks associated with soil erosion and drainage patterns is essential for agricultural output. In the research 9 sub-watersheds of the Bennihalla catchment located in semi-arid regions is studied to priorities for soil erosion-threat through morphometric investigation with the help of Geospatial methods and weighted sum approaches (WSA). ArcGIS was used to build drainage networks; SRTM DEM to delineate sub-watersheds and morphometric parameters (linear, relief and area) following standard formulas. The said parameters used to rank and prioritize sub-watersheds. A weighted sum approach (WSA) and cross-correlation of 18 morphometric parameters were used to approximate the compound factor. The compound factors for various sub-watersheds ranged from 0.0052 to 4.412. Lowest compound factor was given the highest priority. Sub-watersheds were classified as very good, good, moderate, low, and very low according to their compound factor value. The results indicated that, SW1 and SW 9 are influenced by respectively lowest and highest soil erosion threats, the other sub watershed that also need. Soil conservation measures include. SW7, and SW5 (1980.67 km2 area). |
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| Item Type: | Journal Paper |
| Subjects: | School of Natural and Engineering Sciences > Others |
| Divisions: | Schools > Natural Sciences and Engineering |
| Date Deposited: | 30 Jan 2026 09:25 |
| Last Modified: | 30 Jan 2026 09:25 |
| Official URL: | https://tianjindaxuexuebao.com/dashboard/uploads/9... |
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| Funders: | * |
| Projects: | * |
| DOI: | 10.5281/zenodo.15016601 |
| URI: | http://eprints.nias.res.in/id/eprint/3068 |
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