Long-term detection and hydrochemistry of groundwater resources in Egypt: Case study of Siwa Oasis

Aly, Anwar A.; Kishk, Fawzy M.; Gaber, Hesham M.

doi:10.1016/j.jssas.2014.04.003

Cited by 28 publications

(20 citation statements)

References 3 publications

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“…-Poor irrigation is practised in the Al-Kharj (excessive irrigation system). The same finding was recorded in Siwa AE, located in an Egyptian arid environment, by Aly et al (2016). No agricultural drainage system in the Al-Kharj.…”

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confidence: 81%

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Vegetation cover change detection and assessment in arid environment using multi-temporal remote sensing images and ecosystem management approach

et al. 2016

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Abstract. Vegetation cover (VC) change detection is essential for a better understanding of the interactions and interrelationships between humans and their ecosystem. Remote sensing (RS) technology is one of the most beneficial tools to study spatial and temporal changes of VC. A case study has been conducted in the agro-ecosystem (AE) of Al-Kharj, in the center of Saudi Arabia. Characteristics and dynamics of total VC changes during a period of 26 years (1987–2013) were investigated. A multi-temporal set of images was processed using Landsat images from Landsat4 TM 1987, Landsat7 ETM+2000, and Landsat8 to investigate the drivers responsible for the total VC pattern and changes, which are linked to both natural and social processes. The analyses of the three satellite images concluded that the surface area of the total VC increased by 107.4 % between 1987 and 2000 and decreased by 27.5 % between years 2000 and 2013. The field study, review of secondary data, and community problem diagnosis using the participatory rural appraisal (PRA) method suggested that the drivers for this change are the deterioration and salinization of both soil and water resources. Ground truth data indicated that the deteriorated soils in the eastern part of the Al-Kharj AE are frequently subjected to sand dune encroachment, while the southwestern part is frequently subjected to soil and groundwater salinization. The groundwater in the western part of the ecosystem is highly saline, with a salinity ≥ 6 dS m−1. The ecosystem management approach applied in this study can be used to alike AE worldwide.

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supporting

confidence: 81%

“…The number of new wells that were recently drilled for irrigation has increased dramatically, causing depletion and deterioration of groundwater quality (Al-Omran et al, 2015;Aly et al, 2016).…”

mentioning

confidence: 99%

Vegetation cover change detection and assessment in arid environment using multi-temporal remote sensing images and ecosystem management approach

et al. 2016

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“…The predominance of chloride and sodium ions are evident by the proximity to the coast and are related to those obtained in other coastal aquifers by [46][47] to present similar results in the Piper diagram [13].…”

Section: Hydrochemistrysupporting

confidence: 86%

Geoelectrical and Geochemical Characterization of Groundwater in a Shallow Coastal Aquifer

Guevara-Torres

Peinado-Guevara²,

Delgado‐Rodríguez

et al. 2017

Pol. J. Environ. Stud.

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Playa Las Glorias is the main tourist destination for the inhabitants of the municipality of Guasave, Sinaloa, México, and it overlies a shallow coastal aquifer. In recent years, the momentum of the tourism industry in the region has brought a growing demand in the consumption of drinking water. Because of this, it is relevant to the precise knowledge of the interface of slightly brackish saltwater for an efficient planning of new wells by the municipal authorities. For efficient groundwater exploitation, it was taken into consideration the productivity of the aquifer and the environmental impact that would cause improper management of water resources. The electromagnetic profiling (EMP) method was applied in Playa Las Glorias, Sinaloa, Mexico. A total of 150 measurements of EMP distributed in 11 profiles were performed, of which 10 were perpendicular to the coast and one parallel to it, using an EM34 meter in horizontal polarization and separation between coils of 10 m and 20 m. The apparent conductivity maps show an anomaly of low conductivity, indicating the presence of fresh or slightly saline water. In this anomalous zone we performed an electric resistivity tomography (ERT) profile to determine the behavior of groundwater salinity finding a shallow layer of freshwater, and as it deepens the salinity increases due to the influence of the sea. In addition, electrical resistivity (R w ) values were measured in groundwater samples that, along with the resistivity values (R o ) for sandy formation obtained from ERT data, allowed us to determine a lineal relationship between both resistivities. A hydro geochemical study was conducted in the site through Piper diagrams and Chadha, indicating a predominance in the region of chlorinated water due to the influence

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“…Oases, which have greater productivity than the surrounding deserts, are a land type that is adequate for human settlement in arid areas because of the availability of fertile soil, fresh groundwater and surface runoff from nearby mountains (Luo et al, 2008). Since the 1950s, artificial oases have experienced remarkable expansion by large scale land reclamation, irrigation and cultivation in arid areas, such as North Africa (Aly et al, 2014;Mekki et al, 2013) and northwestern China (Luo et al, 2008;Wang, 2010). The expansion of oases has contributed to sufficient food production and economic growth in these areas.…”

Section: Introductionmentioning

confidence: 99%

Human Driving Forces of Oasis Expansion in Northwestern China During the Last Decade—A Case Study of the Heihe River Basin

2016

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Water scarcity is one of the most prominent issues worldwide in relation to sustainable development, especially in arid areas. To gain a better understanding of the trade-off between improving agricultural productivity and maintaining the stability of an oasis ecosystem in these areas, this study took the Heihe River Basin in northwestern China as a case to explore the changes in oasis dynamics and their human driving forces. The results showed that along with the 11·0% expansion of agricultural land, the total water demand for irrigation increased by 6·3% during 2000-2010. Although tremendous economic incentives for farmers spurred the oasis expansion and cropping system changes, the key driving force behind the oasis expansion in the study area was closely related to sufficient irrigation water guaranteed by new water sources (excessive consumption of groundwater and surface water) and water conservation efforts that were the results of the "water-saving society" project (cropping system adjustments and technological improvements in irrigation). This loose regulation of water resource management can be considered to be partially attributable to the ignorance of the ecological value of water resources. Sustainable land use in the study area can only be achieved through the strict regulation of the management of surface water and groundwater resources throughout the basin and the invisible water provided by the water conservation measures.

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Long-term detection and hydrochemistry of groundwater resources in Egypt: Case study of Siwa Oasis

Cited by 28 publications

References 3 publications

Vegetation cover change detection and assessment in arid environment using multi-temporal remote sensing images and ecosystem management approach

Vegetation cover change detection and assessment in arid environment using multi-temporal remote sensing images and ecosystem management approach

Geoelectrical and Geochemical Characterization of Groundwater in a Shallow Coastal Aquifer

Human Driving Forces of Oasis Expansion in Northwestern China During the Last Decade—A Case Study of the Heihe River Basin

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