Assessment of the effect of land use /land cover changes on total runoff from Ofu River catchment in Nigeria
| Autor: | O. J. Mudiare, M.I. Alfa, D. B. Adie, M. A. Ajibike |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Soil map
Hydrology geography Ofu river catchment geography.geographical_feature_category Land use Runoff lcsh:Environmental effects of industries and plants Geography Planning and Development Drainage basin Land cover Soil type Management Monitoring Policy and Law Runoff curve number Pollution Curve number lcsh:TD194-195 Environmental science LULC Surface runoff River catchment Nature and Landscape Conservation |
| Zdroj: | Journal of Degraded and Mining Lands Management, Vol 5, Iss 3, Pp 1161-1169 (2018) |
| ISSN: | 2502-2458 2339-076X |
| DOI: | 10.15243/jdmlm.2018.053.1161 |
| Popis: | The total runoff from a catchment is dependednt on both the soil characteristics and the land use/land cover (LULC) type. This study was conducted to examine the effect of changes in land cover on the total runoff from Ofu River Catchment in Nigeria. Classified Landsat imageries of 1987, 2001 and 2016 in combination with the soil map extracted from the Digital Soil Map of the World was used to estimate the runoff curve number for 1987, 2001 and 2016. The runoff depth for 35 years daily rainfall data was estimated using Natura Resource Conservation Services Curve Number (NRCS-CN) method. The runoff depths obtained for the respective years were subjected to a one-way analysis of variance at 95% level of significance. P - value < 0.05 was taken as statistically significant. Runoff curve numbers obtained for 1987, 2001 and 2016 were 61.83, 63.26 and 62.79 respectively. The effects of the changes in LULC for 1987-2001, 2001-2016 and 1987-2016 were statistically significant (P |
| Databáze: | OpenAIRE |
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