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Land Use Change Assessment and Water Quality of Ephemeral Ponds for Irrigation in the North West Province, South Africa

Author

Listed:
  • Frederick Asare

    (School of Geo and Spatial Sciences, Department of Geography and Environmental Sciences, North West University, Private Bag X2046, Mmabatho 2735, South Africa)

  • Lobina G. Palamuleni

    (School of Geo and Spatial Sciences, Department of Geography and Environmental Sciences, North West University, Private Bag X2046, Mmabatho 2735, South Africa)

  • Tabukeli Ruhiiga

    (School of Geo and Spatial Sciences, Department of Geography and Environmental Sciences, North West University, Private Bag X2046, Mmabatho 2735, South Africa)

Abstract

In the semi-arid environments of the North West province of South Africa the amount, timing, and distribution of rainfall is irregular, while water accessibility is a key factor in production. In line with this, a study was conducted to assess the impact of land use change on water quality and water depth within the sub-catchment areas of ephemeral ponds. To determine land use dynamics, 2004 and 2013 Landsat images were classified using maximum likelihood algorithm. Pond water quality was analysed for physical, chemical, and microbiological parameters using standard the American Public Health Association (APHA) methods. Multiple linear regression models were computed to determine relationships between land use changes and water quality parameters. Results revealed a reduction in grass cover, whereas built-up areas increased at the expense of bare land. All the values for the physical characteristics were higher than the recommended Department of Water Affairs (DWAF) and Food and Agriculture Organisation (FAO) limits, but chemical parameters, except cadmium, were within limits. Regression showed that bare areas have a positive effect on Escherichia coli ( E. coli ) in ephemeral pond water. The study highlights the suitability of pond water for irrigation to increase crop production and the effects of land use changes on ecosystems as critical for proper catchment planning, water resource management, and food security.

Suggested Citation

  • Frederick Asare & Lobina G. Palamuleni & Tabukeli Ruhiiga, 2018. "Land Use Change Assessment and Water Quality of Ephemeral Ponds for Irrigation in the North West Province, South Africa," IJERPH, MDPI, vol. 15(6), pages 1-16, June.
    • Handle: RePEc:gam:jijerp:v:15:y:2018:i:6:p:1175-:d:150690
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    References listed on IDEAS

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    1. Hughes, Andrew O. & Tanner, Chris C. & McKergow, Lucy A. & Sukias, James P.S., 2016. "Unrestricted dairy cattle grazing of a pastoral headwater wetland and its effect on water quality," Agricultural Water Management, Elsevier, vol. 165(C), pages 72-81.
    2. Bahman Amiri & Kaneyuki Nakane, 2009. "Modeling the Linkage Between River Water Quality and Landscape Metrics in the Chugoku District of Japan," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 23(5), pages 931-956, March.
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    Cited by:

    1. Le Zhang & Qinyi Gu & Chen Li & Yi Huang, 2022. "Characteristics and Spatial–Temporal Differences of Urban “Production, Living and Ecological” Environmental Quality in China," IJERPH, MDPI, vol. 19(22), pages 1-22, November.
    2. Xiaohong Chen & Guodong Yi & Jia Liu & Xiang Liu & Yang Chen, 2018. "Evaluating Economic Growth, Industrial Structure, and Water Quality of the Xiangjiang River Basin in China Based on a Spatial Econometric Approach," IJERPH, MDPI, vol. 15(10), pages 1-18, September.

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