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首页> 外文期刊>International Journal of Water Resources and Environmental Engineering >Mapping groundwater potential in Kitui District, Kenya using geospatial technologies
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Mapping groundwater potential in Kitui District, Kenya using geospatial technologies

机译：使用地理空间技术绘制肯尼亚Kitui区的地下水潜力图

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摘要

Kitui district is a semi-arid region characterized by erratic and unreliable rainfall. Despite this, the main economic activity is rain-fed agriculture, with irrigation agriculture taking place on small parcels adjoining riparian reserves. During the dry season, local people travel long distances in search of water, necessitating groundwater potential mapping to support exploitation and complementing other water sources in the district. In this study geospatial technologies are used to identify and map groundwater potential zones using climate, geophysical and geological data. These datasets were appropriately weighted in a modified DRASTIC based overlay scheme. Land-cover data was derived from landsat imagery classification, with lineament density obtained from the same satellite products. A groundwater potential zones map was generated which showed that the central and eastern regions of Kitui district are the most suitable for groundwater exploitation. Existing water points (which were not considered in the study) are situated in this region, hence validating the study.
机译：Kitui区是半干旱地区，降雨不稳定且不可靠。尽管如此，主要的经济活动还是雨养农业，灌溉农业是在毗邻河岸储备的小块土地上进行的。在干旱季节，当地人长途跋涉寻找水源，因此必须绘制地下水势图以支持开采并补充该地区的其他水源。在这项研究中，地理空间技术被用于使用气候，地球物理和地质数据来识别和绘制地下水潜在区域。这些数据集在改进的基于DRASTIC的覆盖方案中进行了适当的加权。土地覆盖数据来自陆地卫星图像分类，而线密度从同一卫星产品获得。生成了地下水潜在地带图，该图显示了Kitui地区的中部和东部地区最适合地下水开采。现有水位（研究中未考虑）位于该区域，因此可以验证研究。

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