干旱区生态环境知识资源中心(Arid): Salinization of groundwater during 20 years of agricultural irrigation, Luxor, Egypt

Arid

DOI	10.1007/s10653-021-01135-2
	Salinization of groundwater during 20 years of agricultural irrigation, Luxor, Egypt
	Said, Ibrahim; Salman, Salman A.; Elnazer, Ahmed A.
通讯作者	Said, I (corresponding author), Natl Res Ctr, Dept Geol Sci, Cairo, Egypt. ; Said, I (corresponding author), Natl Res Ctr, Geol Sci Dept, 33 El Bohouth St,El Tahrir St,POB 12622, Giza, Egypt.
来源期刊	ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
ISSN	0269-4042
EISSN	1573-2983
出版年	2021-10
英文摘要	Groundwater salinization is a global problem accounting for 11-30% of the world's irrigated areas. Luxor region in Upper Egypt is one of such areas affected by salinity. Multivariate statistics indicate that groundwater is affected by intermixed processes; mineralization (salinization), fertilization, domestic wastes, and meteoric recharge. Temporal change in salinity and hydrochemical facies during 1997-2017 revealed aquifer salinization, due to the dissolution of salts from overlain saline soil and marine deposits underneath as well as up-coning of deep saline water. Increasing salinity over time was statistically documented, exhibited temporally high significant differences (P < 0.05), where salinization consumed a quarter of the aquifer during 20 years. Evolution of water facies from less mineralized Ca-Cl, Mg-Cl to highly mineralized Na-Cl species explains the salinization process over time. Elevated content of Na and Cl is associated with the dissolution of marine sediments and saltwater intrusion. The shift from silicate weathering into evaporation dominance confirmed the saltwater intrusion. As a result, groundwater has a high degree of salinity, is not suitable for domestic and other uses. On other hand, fertilization and domestic sewage are probably responsible for the high NO3- and Cd content. Over 80% of Cd exists in mobile species facilitates Cd-plant uptake indicating an alarming environmental situation. Cd mobility is closely related to elevated salinity and chlorinity, allowing competition with major ions and forming of soluble complexes. The present approach will improve the uncertainties of environmental interpretation, as an initial step for aquifers management in reclaimed lands.
英文关键词	Multivariate statistics Groundwater salinization Anthropogenic influences Desert reclamation Egypt
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000711288300001
WOS关键词	SEAWATER INTRUSION ; WATER ; RESOURCES ; EVOLUTION ; AQUIFER ; REGION ; SOHAG
WOS类目	Engineering, Environmental ; Environmental Sciences ; Public, Environmental & Occupational Health ; Water Resources
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Public, Environmental & Occupational Health ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/367607
作者单位	[Said, Ibrahim; Salman, Salman A.; Elnazer, Ahmed A.] Natl Res Ctr, Dept Geol Sci, Cairo, Egypt; [Said, Ibrahim; Salman, Salman A.; Elnazer, Ahmed A.] Natl Res Ctr, Geol Sci Dept, 33 El Bohouth St,El Tahrir St,POB 12622, Giza, Egypt
推荐引用方式 GB/T 7714	Said, Ibrahim,Salman, Salman A.,Elnazer, Ahmed A.. Salinization of groundwater during 20 years of agricultural irrigation, Luxor, Egypt[J],2021.
APA	Said, Ibrahim,Salman, Salman A.,&Elnazer, Ahmed A..(2021).Salinization of groundwater during 20 years of agricultural irrigation, Luxor, Egypt.ENVIRONMENTAL GEOCHEMISTRY AND HEALTH.
MLA	Said, Ibrahim,et al."Salinization of groundwater during 20 years of agricultural irrigation, Luxor, Egypt".ENVIRONMENTAL GEOCHEMISTRY AND HEALTH (2021).