Hydrochemical Characteristics of Groundwater in the Heihe River Basin

Qiu, Yang; Xiao, Hansong; Zhao, Liang; Liu, Wenjie; Li, Cai-zhi; Yang, Y.S.

doi:10.1109/icbbe.2010.5517209

Cited by 2 publications

(3 citation statements)

References 7 publications

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“…The study area belongs to an arid area, and evaporation has a certain influence on the formation and evolution of groundwater chemistry. Previous studies concluded that evaporation played an important role in groundwater chemical compositions in the study area [25,28]. To investigate the high Cl − concentrations of the groundwater, the diagram of δ 18 O vs. Cl − was used in the present study ( Figure 9a).…”

Section: Evaporationmentioning

confidence: 99%

“…With the coverage of farmland and woodland being up to 15% of the total area, the region's groundwater has become the lifeblood of nature, society, and the economy. In recent years, groundwater chemistry and isotopes (D, 18 O, 3 H, 14 C) data were used to conduct preliminary research on groundwater recharge sources, hydrochemistry evolution, and groundwater circulation in the Nomhon area [25][26][27][28][29]. Previous studies emphasized the basic characteristics of groundwater qualitatively, lacking quantitative descriptions on chemistry variation and hydrogeochemical reactions along the flow path.…”

Section: Introductionmentioning

confidence: 99%

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Application of Multiple Approaches to Investigate the Hydrochemistry Evolution of Groundwater in an Arid Region: Nomhon, Northwestern China

Yang

Wang

Shi

et al. 2018

Water

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Groundwater is a critical water resource for human survival and economic development in arid and semi-arid areas. It is crucial to understand the groundwater circulation and hydrochemical evolution for sustainable management and utilization of groundwater resources in those areas. To this end, an investigation of the hydrochemical characteristics of surface water and groundwater was conducted in Nomhon, an arid area located in the Qaidam Basin, northwest China, by using hydrochemical (major and trace elements) and stable isotopes (δD and δ18O) approaches. Stable isotopes and ion ratios were analyzed to determine the recharge sources, hydrochemistry characteristics, and major hydrogeochemical processes. Meanwhile, inverse geochemistry modeling was applied to quantitatively determine the mass transfer of hydrogeochemical processes. The results showed that groundwater in the study area is mainly recharged by atmospheric precipitation in mountainous areas, and the groundwater in the center of basin might originate from ancient water in cold and humid environments. Along the groundwater flow path, the TDS of groundwater increased gradually from fresh to salty (ranging from 462.50 to 19,604.40 mg/L), and the hydrochemical type changed from Cl·HCO3–Na·Mg·Ca to Cl–Na. Groundwater chemical composition and mass balance modeling results indicated that from alluvial fan to lacustrine plain, the main hydrogeochemical processes changed from the dissolution of halite and albite and the precipitation of dolomite and kaolinite to the dissolution of halite and gypsum, precipitation of calcite, redox (SO42− reduction), and cation exchange. This study would be helpful for water resources management in this area and other similar areas.

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Section: Evaporationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Application of Multiple Approaches to Investigate the Hydrochemistry Evolution of Groundwater in an Arid Region: Nomhon, Northwestern China

Yang

Wang

Shi

et al. 2018

Water

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“…The basic points are: (i) the suitable point of WTD, (ii) the groundwater level threshold of ecological warning, when soil water content drops to below field capacity and approaches the plant's wilting point, and (iii) the critical groundwater level for salinity control which represents the groundwater level at which evaporation in the driest season will not cause salt accumulation in the surface soil layer. Consequently, when the WTD is close to the critical groundwater level for salinity control or to the groundwater level of ecological risk, its fluctuations can significantly affect plant growth (Yuan, 1985).…”

Section: The Groundwater Level Of Ecological Warning and Its Implicatmentioning

confidence: 99%

Using the concept of ecological groundwater level to evaluate shallow groundwater resources in hyperarid desert regions

Feng¹,

Peng²,

Li³

et al. 2012

Journal of Arid Land

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This paper, based on the analysis and calculation of the groundwater resources in an arid region from 1980 to 2001, put forward the concept of ecological groundwater level threshold for either salinity control or the determination of ecological warning. The surveys suggest that soil moisture and soil salinity are the most important environmental factors in determining the distribution and changes in vegetation. The groundwater level threshold of ecological warning can be determined by using a network of groundwater depth observation sites that monitor the environmental moisture gradient as reflected by plant physiological characteristics. According to long-term field observations within the Ejin oases, the groundwater level threshold for salinity control varied between 0.5 m and 1.5 m, and the ecological warning threshold varied between 3.5 m and 4.0 m. The quantity of groundwater resources (renewable water resources, ecological water resources, and exploitable water resources) in arid areas can be calculated from regional groundwater level information, without localized hydrogeological data. The concept of groundwater level threshold of ecological warning was established according to water development and water resources supply, and available groundwater resources were calculated. The concept not only enriches and broadens the content of groundwater studies, but also helps in predicting the prospects for water resources development.

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Hydrochemical Characteristics of Groundwater in the Heihe River Basin

Cited by 2 publications

References 7 publications

Application of Multiple Approaches to Investigate the Hydrochemistry Evolution of Groundwater in an Arid Region: Nomhon, Northwestern China

Application of Multiple Approaches to Investigate the Hydrochemistry Evolution of Groundwater in an Arid Region: Nomhon, Northwestern China

Using the concept of ecological groundwater level to evaluate shallow groundwater resources in hyperarid desert regions

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