Seawater intrusion impacts on groundwater and soil quality in the northern part of the Nile Delta, Egypt

Seawater intrusion impacts on groundwater and soil quality in the northern part of the Nile Delta, Egypt

Seawater intrusion (SI) is thought to be a significant threat to groundwater and soil quality in arid costal ecosystems, causing a reduction in freshwater availability and soil productivity. This study investigated the effects of seawater intrusion on soil and groundwater quality in the Nile Delta r...

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Bibliographic Details
Published in:Environmental earth sciences Vol. 79; no. 13
Main Authors: Ding, Zheli, Koriem, Mohamed A., Ibrahim, Shaaban M., Antar, Antar S., Ewis, Mohamed A., He, Zhenli, Kheir, Ahmed M. S.
Format: Journal Article
Language:English
Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-07-2020
Springer Nature B.V
Subjects:
Alkalinity
Aridity
Biogeosciences
Coastal aquifers
Correlation
Earth and Environmental Science
Earth Sciences
Environmental Science and Engineering
Freshwater
Freshwater ecosystems
Geochemistry
Geology
Groundwater
Groundwater quality
Hydrology/Water Resources
Inland water environment
Irrigated lands
Mixing ratio
Offshore
Original Article
Pore water
Quality
Saline water intrusion
Salinity
Salinity effects
Salt water intrusion
Seawater
Seawater intrusion
Soil
Soil investigations
Soil quality
Soil water
Soils
Terrestrial Pollution
Water quality
Groundwater depth
Soil properties
Offshore distance
Seawater intrusion (SI)
Salinity
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Summary:Seawater intrusion (SI) is thought to be a significant threat to groundwater and soil quality in arid costal ecosystems, causing a reduction in freshwater availability and soil productivity. This study investigated the effects of seawater intrusion on soil and groundwater quality in the Nile Delta region at 16 sites located at distances of 5–45 km from the coast. We found that groundwater and soil quality were significantly affected by seawater intrusion. Results from the investigations indicated that: (1) the salinity and alkalinity of groundwater and soil pore-water decreased with increasing distances towards the inland, and showed significant positive correlations for EC, SAR, Na + and Cl − by 0.80, 0.46, 0.78 and 0.66 respectively offshore (45 km); (2) there were significant positive correlations between salinity and alkalinity of both groundwater and soil pore-water inland up to 15 km distance from the coast;(3) mixing ratio values (F%) of seawater and groundwater were 9.30 to 37.56% in different sites, recording a maximum value close to the sea (5 km), while a minimum value was observed offshore (45 km); and (4) increasing seawater intrusion had negative impacts on the quality of groundwater and soil up to 15 km from the sea, providing the possibility of exploiting irrigated land in Nile delta up to 15 km from the Mediterranean sea.
ISSN:1866-6280
1866-6299
DOI:10.1007/s12665-020-09069-1