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Impact of Climate and Land Use/Land Cover Change on the Water Resources of a Tropical Inland Valley Catchment in Uganda, East Africa

Gabiri, Geofrey; Diekkrüger, Bernd; Näschen, Kristian; Leemhuis, Constanze; Linden, Roderick van der; Majaliwa, Jackson-Gilbert Mwanjalolo; Obando, Joy Apiyo

Abstract (englisch):
The impact of climate and land use/land cover (LULC) change continues to threaten water resources availability for the agriculturally used inland valley wetlands and their catchments in East Africa. This study assessed climate and LULC change impacts on the hydrological processes of a tropical headwater inland valley catchment in Uganda. The hydrological model Soil and Water Assessment Tool (SWAT) was applied to analyze climate and LULC change impacts on the hydrological processes. An ensemble of six regional climate models (RCMs) from the Coordinated Regional Downscaling Experiment for two Representative Concentration Pathways (RCPs), RCP4.5 and RCP8.5, were used for climate change assessment for historical (1976-2005) and future climate (2021-2050). Four LULC scenarios defined as exploitation, total conservation, slope conservation, and protection of headwater catchment were considered. The results indicate an increase in precipitation by 7.4% and 21.8% of the annual averages in the future under RCP4.5 and RCP8.5, respectively. Future wet conditions are more pronounced in the short rainy season than in the long rainy season. Flooding intensity is likely to increase during the rainy season with low flows more pronounced in the dry season. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000120969
Veröffentlicht am 06.07.2020
Originalveröffentlichung
DOI: 10.3390/cli8070083
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Forschungsbereich Troposphäre (IMK-TRO)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 2225-1154
KITopen-ID: 1000120969
HGF-Programm 12.01.02 (POF III, LK 01)
Proc.res.f.multisc.predictab.of weather
Erschienen in Climate
Band 8
Heft 7
Seiten Article No.83
Vorab online veröffentlicht am 29.06.2020
Schlagwörter water resources; wetland-catchment nexus; SWAT model; climate change impacts; land use/land cover management
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