Seasonal behavior and spatial fluctuations of groundwater levels in long-term irrigated agriculture: the case of a sugar estate

• Autorzy: Dinka M.O. , Loiskandl W. , Ndambuki J. M.
• Języki publikacji: EN

Abstrakty

EN

This paper presents results on the spatial and temporal fluctuations of the groundwater table depth (GWTD) at Wonji-Shoa Sugar Estate (WSSE). Accordingly, spatial maps of GWTD were produced in a GIS (ArcView 3.3) environment from 35 groundwater monitoring piezometers. Results of the study revealed that WSSE, after nearly 60 years of irrigation, is experiencing a serious waterlogging problem. The groundwater (GW) depth is extremely shallow (<1 m below ground) in most of the piezometers throughout the entire season and showed great spatio-seasonal variability. The rate of annual increment of GW rise, coupled with seasonal fluctuation, has obvious repercussions and grave consequences for the sustainability of WSSE in particular and to the region in general. Unless the potential causes for the rise of GWTD are identified soon and feasible corrective measures for mitigating GW rise are introduced, severe crises in the region are inevitable.

Słowa kluczowe

EN

seasonal behaviour; spatial fluctuation; ground water level; long-term irrigated agriculture; agriculture; sugar estate; groundwater monitoring; piezometer; mapping; groundwater fluctuation; water logging; water management

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2013
• Tom: 22
• Numer: 5
• Opis fizyczny: p.1325-1334,fig.,ref.

Twórcy

autor

Dinka M.O.

• Department of Civil Engineering, Faculty of Engineering and the Built Environment, Tshwane University of Technology, P/Bag X680 Pretoria 0001, Republic of South Africa

autor

Loiskandl W.

• Department of Water, Atmosphere and Environment, University of Natural Resources and Life Sciences (BOKU), Muthgasse A-1190, Vienna, Austria

autor

Ndambuki J. M.

• Department of Civil Engineering, Faculty of Engineering and the Built Environment, Tshwane University of Technology, P/Bag X680 Pretoria 0001, Republic of South Africa

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