NDLI: Hydrogeochemical processes in the groundwater environment of Heihe River Basin, northwest China

Content Provider	Springer Nature Link
Author	Gaofeng, Zhu Yonghong, Su Chunlin, Huang Qi, Feng Zhiguang, Liu
Copyright Year	2009
Abstract	The Heihe River Basin is a typical arid inland river basin for examining stress on groundwater resources in northwest China. The basin is composed of large volumes of unconsolidated Quaternary sediments of widely differing grain size, and during the past half century, rapid socio-economic development has created an increased demand for groundwater resources. Understanding the hydrogeochemical processes of groundwater and water quality is important for sustainable development and effective management of groundwater resources in the Heihe River basin. To this end, a total of 30 representative groundwater samples were collected from different wells to monitor the water chemistry of various ions and its quality for irrigation. Chemical analysis shows that water presents a large spatial variability of chemical facies (SO$_{4}$ $^{2−}$–HCO3−, SO$_{4}$ $^{2−}$–Cl$^{−}$, and Cl$^{−}$–SO$_{4}$ $^{2−}$) as groundwater flow from recharge area to discharge area. The ionic ratio indicates positive correlation between the flowing pairs of parameters: Cl$^{−}$ and Na$^{+}$(r = 0.95), SO$_{4}$ $^{2−}$ and Na$^{+}$ (r = 0.84), HCO$_{3}$ $^{−}$ and Mg$^{2+}$(r = 0.86), and SO$_{4}$ $^{2−}$ and Ca$^{2+}$ (r = 0.91). Dissolution of minerals, such as halite, gypsum, dolomite, silicate, and Mirabilite (Na$_{2}$SO$_{4}$·10H$_{2}$O) in the sediments results in the Cl$^{−}$, SO$_{4}$ $^{2−}$, HCO$_{3}$ $^{−}$, Na$^{+}$, Ca$^{2+}$ and Mg$^{2+}$ content in the groundwater. Other reactions, such as evaporation, ion exchange, and deposition also influence the water composition. The suitability of the groundwater for irrigation was assessed based on the US Salinity Laboratory salinity classification and the Wilcox diagram. The results show that most of the groundwater samples are suitable for irrigation uses barring a few locations in the dessert region in the northern sub-basin.
Starting Page	139
Ending Page	153
Page Count	15
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	60
Issue Number	1
e-ISSN	18666299
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-05-19
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Heihe River Basin Groundwater quality Hydrochemistry Arid regions Geology
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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