TY - JOUR
T1 - Coupling hydrochemistry and stable isotopes to identify the major factors affecting groundwater geochemical evolution in the Heilongdong Spring Basin, North China
AU - Liu, Fei
AU - Wang, Shou
AU - Wang, L.
AU - Shi, Liming
AU - Song, Xianfang
AU - Yeh, Tian Chyi Jim
AU - Zhen, P.
N1 - Funding Information:
This research was supported by the China Scholarship Council (Grant no. 201808130026); the Natural Science Foundation of Hebei Province (Grant no. D2019402045); the Department of Education, Hebei Province (Grant no. QN2018076); Hebei University of Engineering (Grant no. SJ010002038); the National Key Research and Development Program of China (Grant no. 2017YFC0406105); the National Natural Science Foundation of China (Grant no. 51879066). The authors are grateful to our colleagues and graduates for their assistance in data collection and field investigation. Special thanks go to the editor and the two anonymous reviewers for their critical reviews and valuable suggestions. The data that support the findings of this study are available from the corresponding author upon reasonable request.
Funding Information:
This research was supported by the China Scholarship Council (Grant no. 201808130026 ); the Natural Science Foundation of Hebei Province (Grant no. D2019402045 ); the Department of Education, Hebei Province (Grant no. QN2018076 ); Hebei University of Engineering (Grant no. SJ010002038 ); the National Key Research and Development Program of China (Grant no. 2017YFC0406105 ); the National Natural Science Foundation of China (Grant no. 51879066 ). The authors are grateful to our colleagues and graduates for their assistance in data collection and field investigation. Special thanks go to the editor and the two anonymous reviewers for their critical reviews and valuable suggestions.
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/10
Y1 - 2019/10
N2 - Understanding the interference of natural processes and anthropogenic activities in geochemical evolution of groundwater is vital for groundwater sustainable management in water-stressed regions. This study is devoted to the identification of the main factors controlling the evolution of groundwater chemistry by the combined use of hydrogeochemical indicators along with isotope tracers in the Heilongdong Spring Basin, North China. Thirty-nine groundwater samples and twelve surface water samples were collected, and major ions and stable isotopes were measured during the two campaigns (December 2017 and August 2018). The isotope approach indicates that the groundwater is recharged by precipitation infiltration after evaporation, and interacts with surface water along preferential flow paths in fault zones and karst conduits. Currently, the main chemical facies of groundwater evolve from Ca-HCO3 and Ca-Mg-HCO3 types with low TDS, through Ca-Mg-HCO3-SO4 and Ca-HCO3-SO4 types with moderate TDS, to Ca-SO4, Ca-SO4-Cl and Ca–Cl types with high TDS. Apart from natural processes (involving dissolution/precipitation of minerals, cation exchange, and evaporation) regulating the groundwater quality, the stagnant zones also play a crucial role in the formation of severe localized nitrate contamination. The deterioration in groundwater quality can be attributed to anthropogenic factors (including the change in groundwater exploitation, the leaching of solid waste, and the overuse of agricultural fertilizers). The high loads of agricultural fertilizers in irrigation return flows are likely to be the main contributor of the dissolved nitrate in groundwater. The findings of this work not only have important implications for groundwater sustainable utilization, but also could serve as a template for other rapidly industrialized and water-stressed regions.
AB - Understanding the interference of natural processes and anthropogenic activities in geochemical evolution of groundwater is vital for groundwater sustainable management in water-stressed regions. This study is devoted to the identification of the main factors controlling the evolution of groundwater chemistry by the combined use of hydrogeochemical indicators along with isotope tracers in the Heilongdong Spring Basin, North China. Thirty-nine groundwater samples and twelve surface water samples were collected, and major ions and stable isotopes were measured during the two campaigns (December 2017 and August 2018). The isotope approach indicates that the groundwater is recharged by precipitation infiltration after evaporation, and interacts with surface water along preferential flow paths in fault zones and karst conduits. Currently, the main chemical facies of groundwater evolve from Ca-HCO3 and Ca-Mg-HCO3 types with low TDS, through Ca-Mg-HCO3-SO4 and Ca-HCO3-SO4 types with moderate TDS, to Ca-SO4, Ca-SO4-Cl and Ca–Cl types with high TDS. Apart from natural processes (involving dissolution/precipitation of minerals, cation exchange, and evaporation) regulating the groundwater quality, the stagnant zones also play a crucial role in the formation of severe localized nitrate contamination. The deterioration in groundwater quality can be attributed to anthropogenic factors (including the change in groundwater exploitation, the leaching of solid waste, and the overuse of agricultural fertilizers). The high loads of agricultural fertilizers in irrigation return flows are likely to be the main contributor of the dissolved nitrate in groundwater. The findings of this work not only have important implications for groundwater sustainable utilization, but also could serve as a template for other rapidly industrialized and water-stressed regions.
KW - Groundwater evolution
KW - Hydrochemistry
KW - North China
KW - Stable isotopes
KW - Water-rock interactions
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U2 - 10.1016/j.gexplo.2019.106352
DO - 10.1016/j.gexplo.2019.106352
M3 - Article
AN - SCOPUS:85070218730
SN - 0375-6742
VL - 205
JO - Journal of Geochemical Exploration
JF - Journal of Geochemical Exploration
M1 - 106352
ER -