Integrating GIS and remote sensing for land use/land cover mapping and groundwater potential assessment for climate-smart cocoa irrigation in Ghana

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cg.contributor.affiliationInternational Water Management Institute
cg.contributor.affiliationCenter for Earth Observation and Environmental Research, Ghana
cg.contributor.affiliationCouncil for Scientific and Industrial Research, Ghana
cg.contributor.affiliationUniversity of KwaZulu-Natal
cg.contributor.crpWater, Land and Ecosystems
cg.contributor.donorCGIAR Trust Fund
cg.contributor.initiativeWest and Central African Food Systems Transformation
cg.coverage.countryGhana
cg.coverage.iso3166-alpha2GH
cg.coverage.regionWestern Africa
cg.creator.identifierDr Akpoti Komlavi: 0000-0001-6435-5116
cg.creator.identifierMoctar Dembélé: 0000-0002-0689-2033
cg.creator.identifierMabhaudhi T: 0000-0002-9323-8127
cg.creator.identifierOlufunke Cofie: 0000-0002-2092-4679
cg.identifier.doihttps://doi.org/10.1038/s41598-023-43286-5
cg.identifier.iwmilibraryH052236
cg.isijournalISI Journal
cg.issn2045-2322
cg.issue1
cg.journalScientific Reports
cg.number16025
cg.reviewStatusPeer Review
cg.volume13
dc.contributor.authorAkpoti, Komlavi
dc.contributor.authorDembélé, Moctar
dc.contributor.authorForkuor, G.
dc.contributor.authorObuobie, E.
dc.contributor.authorMabhaudhi, Tafadzwanashe
dc.contributor.authorCofie, Olufunke O.
dc.date.accessioned2023-09-30T06:50:03Zen
dc.date.available2023-09-30T06:50:03Zen
dc.identifier.urihttps://hdl.handle.net/10568/132074
dc.titleIntegrating GIS and remote sensing for land use/land cover mapping and groundwater potential assessment for climate-smart cocoa irrigation in Ghanaen
dcterms.abstractAlthough Ghana is a leading global cocoa producer, its production and yield have experienced declines in recent years due to various factors, including long-term climate change such as increasing temperatures and changing rainfall patterns, as well as drought events. With the increasing exposure of cocoa-producing regions to extreme weather events, the vulnerability of cocoa production is also expected to rise. Supplemental irrigation for cocoa farmers has emerged as a viable adaptation strategy to ensure a consistent water supply and enhance yield. However, understanding the potential for surface and groundwater irrigation in the cocoa-growing belt remains limited. Consequently, this study aims to provide decision-support maps for surface and groundwater irrigation potential to aid planning and investment in climate-smart cocoa irrigation. Utilizing state-of-the-art geospatial and remote sensing tools, data, and methods, alongside in-situ groundwater data, we assess the irrigation potential within Ghana's cocoa-growing areas. Our analysis identified a total area of 22,126 km2 for cocoa plantations and 125.2 km2 for surface water bodies within the cocoa-growing regions. The multi-criteria analysis (MCA) revealed that approximately 80% of the study area exhibits moderate to very high groundwater availability potential. Comparing the MCA output with existing borehole locations demonstrated a reasonable correlation, with about 80% of existing boreholes located in areas with moderate to very high potential. Boreholes in very high potential areas had the highest mean yield of 90.7 l/min, while those in low groundwater availability potential areas registered the lowest mean yield of 58.2 l/min. Our study offers a comprehensive evaluation of water storage components and their implications for cocoa irrigation in Ghana. While groundwater availability shows a generally positive trend, soil moisture and surface water have been declining, particularly in the last decade. These findings underline the need for climate-smart cocoa irrigation strategies that make use of abundant groundwater resources during deficit periods. A balanced conjunctive use of surface and groundwater resources could thus serve as a sustainable solution for maintaining cocoa production in the face of climate change.en
dcterms.accessRightsOpen Access
dcterms.available2023-09-25
dcterms.bibliographicCitationAkpoti, Komlavi; Dembele, Moctar; Forkuor, G.; Obuobie, E.; Mabhaudhi, Tafadzwanashe; Cofie, Olufunke. 2023. Integrating GIS and remote sensing for land use/land cover mapping and groundwater potential assessment for climate-smart cocoa irrigation in Ghana. Scientific Reports, 13:16025. [doi: https://doi.org/10.1038/s41598-023-43286-5]en
dcterms.extent13:16025
dcterms.issued2023-09-25
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherSpringer
dcterms.subjectclimate-smart agricultureen
dcterms.subjectcocoaen
dcterms.subjectgroundwater irrigationen
dcterms.subjectland-use mappingen
dcterms.subjectland cover mappingen
dcterms.subjectgroundwater potentialen
dcterms.subjectgroundwater assessmenten
dcterms.subjectgeographical information systemsen
dcterms.subjectremote sensingen
dcterms.subjectsurface wateren
dcterms.subjectwater availabilityen
dcterms.subjectclimate changeen
dcterms.typeJournal Article

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