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首页> 外文期刊>Open Journal of Modern Hydrology >The Influence of Land-Use on Water Quality in a Tropical Coastal Area: Case Study of the Keta Lagoon Complex, Ghana, West Africa
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The Influence of Land-Use on Water Quality in a Tropical Coastal Area: Case Study of the Keta Lagoon Complex, Ghana, West Africa

机译：土地利用对热带沿海地区水质的影响：以西非加纳的凯塔泻湖中心为例

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摘要

The Keta Lagoon and its catchment areas in Ghana are influenced by intensive agriculture and the use of agro-chemicals. It has therefore, become necessary to assess the quality of water in the lagoon and the surrounding fresh water aquifers. In this study, a water quality index (WQI), indicating the water quality has been adopted. The WQI was determined on a basis of various physico-chemical parameters like pH, conductivity, turbidity, dissolved oxygen, calcium, magnesium, chloride, nitrates, ammonium and sodium. The index was used both for tracking changes at one site over time, and for comparisons among sites. The WQI was also employed to wells used for irrigation on farms along the Keta Sand Spit as well as that of the Keta Lagoon Complex and its surrounding floodplains, in order to ascertain the quality of water for public and livestock consumption, irrigation, recreation and other purposes. The WQI of the wells, Keta lagoon and its floodplains showed various degrees of poor water quality and therefore considered unsuitable for drinking and recreation. By WHO standards, this calls for intensive physical and chemical treatment of the water for human consumption.
机译：加纳的科塔泻湖及其集水区受到集约化农业和农用化学品使用的影响。因此，有必要评估泻湖和周围的淡水含水层中的水质。在这项研究中，采用了指示水质的水质指数（WQI）。 WQI是根据各种物理化学参数（例如pH，电导率，浊度，溶解氧，钙，镁，氯化物，硝酸盐，铵和钠）确定的。该索引既可用于跟踪一个站点随时间的变化，也可用于站点之间的比较。 WQI还用于在Keta Sand Spit以及Keta Lagoon Complex及其周围的洪泛区的农场上用于灌溉的水井，以确定用于公共和牲畜消费，灌溉，娱乐和其他目的的水质目的。井，Keta泻湖及其洪泛区的水质指数显示出不同程度的水质差，因此被认为不适合饮用和娱乐。按照世卫组织的标准，这要求对人类用水进行深入的物理和化学处理。

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