Browsing by Author "Chemura, Abel"

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    The impact of land-use/land cover changes on water balance of the heterogeneous Buzi sub-catchment, Zimbabwe
    (Elsevier, 2020) Chemura, Abel; Rwasoka, Donald Tendayi; Mutanga, Onisimo
    The nature of interactions between ecological, physical and hydrological characteristics that determine the effects of land cover change on surface and sub-surface hydrology is not well understood in both natural and disturbed environments. The spatiotemporal dynamics of water fluxes and their relationship with land cover changes between 2009 and 2017 in the headwater Buzi sub-catchment in Zimbabwe is evaluated. To achieve this, land cover dynamics for the area under study were characterised from the 30 m Landsat data, using the eXtreme Gradient Boosting (XGBoost) algorithm.
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    Landuse and landcover change assessment in the Upper Runde sub-catchment, Zimbabwe and possible impacts on reservoir sedimentation
    (Physics and Chemistry of the Earth, 2022) Dube, Timothy; Kusena, Winmore; Chemura, Abel; Nicolau, Melanie. D; Marambanyika, Thomas
    This work assesses land cover changes on the Upper Runde sub-catchment, Zimbabwe, and associated effects on sedimentation rates and risks. The model was implemented using the common Geographic Information Systems tools. To achieve this objective, mean annual and monthly rainfall, as well as sediment data, were used (December 2016 and April 2017). Land use and land cover changes were assessed using time-series Landsat data acquired between the years 2000 and 2016. The Revised Universal Soil Loss (RUSLE) model was used to model sedimentation rates in the catchment