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Now showing items 11-20 of 22
Determining optimal new generation satellite derived metrics for accurate C3 and C4 grass species aboveground biomass estimation in South Africa
(MDPI, 2018)
While satellite data has proved to be a powerful tool in estimating C3 and C4 grass species
Aboveground Biomass (AGB), finding an appropriate sensor that can accurately characterize the
inherent variations remains a ...
Near real time water quality monitoring of Chivero and Manyame lakes of Zimbabwe
(Copernicus Publications, 2018)
Zimbabwe’s water resources are under pressure from both point and non-point sources of pollution
hence the need for regular and synoptic assessment. In-situ and laboratory based methods of water quality monitoring
are ...
Transformation between phreatic water and soil water during freeze–thaw periods
(MDPI, 2018)
During freeze–thaw periods, the exchange between shallow groundwater and soil water is
unusually strong and bidirectional, which causes soil salinization and affects the accuracy of water
resources assessment. The ...
Effect of landcover/land-use changes on water availability in and around Ruti Dam in Nyazvidzi catchment, Zimbabwe
(Water Research Commission, 2018)
The aim of this study was to quantify the upstream land-use and landcover changes and assess their effect on Ruti Dam levels
and water availability in Nyazvidzi catchment. Remote-sensing techniques, hydrologic modelling ...
Water use dynamics of young and mature apple trees planted in South African orchards: a case study of the Golden Delicious and Cripps’ Pink cultivars
(Copernicus Publications, 2018)
Apple orchards have previously been bearing 60–80 t ha-1 at most. However in recent years yield
has increased to more than 100 t ha-1. There is need to understand the water requirements of the high yielding
orchards, ...
Developments in the remote sensing of soil erosion in the perspective of sub-Saharan Africa. Implications on future food security and biodiversity
(Elsevier, 2018)
The remote sensing of soil erosion has gained substantial consideration, with considerable scientific research work having been conducted in the past, due to technological improvements that have resulted in the release of ...
Understanding the spatial distribution of eroded areas in the former rural homelands of South Africa: Comparative evidence from two new non-commercial multispectral sensors
(Elsevier, 2018)
In this study, we determine the most suitable multispectral sensor that can accurately detect and map eroded areas from other land cover types in Sekhukhune rural district, Limpopo Province, South Africa. Specifically, the ...
Water futures and solutions: Options to enhance water security in sub-Saharan Africa
(Springer, Cham, 2018)
Water security is one of the greatest health, ecological, environmental, and human rights challenges of our time. Africa sits at the epicenter of this quandary, with the need to build resilience into already over allocated ...
Establishing the link between urban land cover change and the proliferation of aquatic hyacinth (Eichhornia crassipes) in Harare Metropolitan, Zimbabwe
(Elsevier, 2018)
Urbangrowthisakeyprocessaffectingthefunctioningofnaturalecosystems,andconsequentlythegloballand-surface process. This work aimed at establishing the link between land cover changes around HarareMetropolitancityandtheprol ...
Ecosystem engineering by hummock-building earthworms in seasonal wetlands of eastern South Africa: Insights into the mechanics of biomorphodynamic feedbacks in wetland ecosystems
(Wiley, 2018)
This paper resolves the origin of clay hummock micro-topography in seasonal wetlands of the Drakensberg Foothills,
providing a review and appraisal of previously-suggested mechanisms of hummock formation in the context ...