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http://ir.library.ui.edu.ng/handle/123456789/8533
Title: | Hydrological responses to climate and land use changes: the paradox of regional and local climate effect in the Pra River Basin of Ghana |
Authors: | Bessah, E. Raji, A. O. Taiwo, O. J. Agodzo, S. K. Ololade, O. O. Strapasson, A. |
Keywords: | Climate change InVEST model Land use land cover change Regional climate models Pra River Basin SDSM-DC Water yield |
Issue Date: | 2020 |
Publisher: | Elsevier Ltd. |
Abstract: | Study Region: Pra River Basin, Ghana. Study Focus: The study modelled the changes in water yield using regional, sub-regional and local climate conditions from modelling outputs at spatial resolutions of 44 km, 12 km and 0.002 km respectively to drive the Integrated Valuation of Ecosystem Services and Trade-offs model at three time periods of land use land cover (LULC). Changes in historical water yield (simulated for 1986, 2002 & 2018 LULC using the mean climatic parameters from 1981-2010) and future scenario (simulated for 2018 LULC using the mean climatic parameters from 2020-2049) for annual, seasonal and monthly periods were assessed. New Hydrological Insights for the Region: The results show that future annual water yield could change by -46%, -48%, +44% and -35% under the regional, sub-regional, local and ensemble mean of the climate scenarios respectively. Seasonal water yield from the ensemble mean of the future climate scenario was projected to decrease between 2-16 mm, with a mean decrease of 33.39% during the December–February season. There was no directional effect of spatial resolution on water yield. The future period could be impacted by both drought and flood. We recommend that re/afforestation should be encouraged to improve infiltration and reduce deforestation which was 2.27% per annum in the assessed period to prevent flood causing runoffs, while irrigation technology will help to improve resilience to drought. |
URI: | http://ir.library.ui.edu.ng/handle/123456789/8533 |
ISSN: | 2214-5818 |
Appears in Collections: | scholarly works |
Files in This Item:
File | Description | Size | Format | |
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(35) ui_art_bessah_hydrological_2020.pdf | 3.75 MB | Adobe PDF | View/Open |
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