Hydrogeochemistry of three watersheds (the Erlqis, Zhungarer and Yili) in northern Xinjiang, NW China

Zhu, Bingqi; Yang, Xiaoping; Rioual, Patrick; Qin, Xiaoguang; Liu, Ziting; Xiong, Hui; Yu, Jingjie

doi:10.1016/j.apgeochem.2011.06.018

Cited by 73 publications

(47 citation statements)

References 33 publications

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“…Water samples with high arsenic concentrations (>10 µg/L) generally contain high proportions of Na + , K + , and Cl − ions ( Figure 6). The ratio of major ions in water samples can be clearly shown with a Piper diagram [29], and the percentage of major ions determines the hydrochemical characteristics of water [29][30][31]. Most stream and well waters sampled are slightly alkaline, with an average pH of 7.8 (Table S1), and Ca-Mg-HCO3 (n = 45), Ca-Mg-HCO3-SO4 (n = 33), Ca-HCO3 (n = 31), and Ca-HCO3-SO4 (n = 21) as most water types of these water samples.…”

Section: Elemental Concentration and Hydrochemical Characteristics Ofmentioning

confidence: 99%

Distribution and Potential Health Risks of Arsenic, Selenium, and Fluorine in Natural Waters in Tibet, China

Tian

Zha

et al. 2016

Water

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Abstract:The contents of major and trace elements were analyzed in 204 different types of water samples in 138 villages across 51 counties and cities of Tibet. The average concentrations of arsenic (As), selenium, and fluorine for each water category decreased in the following order: arsenic (in µg/L: hot spring 241.37 > lake 27.46 > stream 22.11 > shallow well 11.57 > deep well 6. .52, 2.10, 1.68, and 1.51 µg/L in the prefectures of Shigatse, Nagchu, Lhasa, Lhoka, and Nyingchi, respectively. Carbonatite is a major source of elements in these waters. The non-carcinogenic risk in Tibet caused by heavy metals in drinking water is low overall, except in Ali prefecture's surface and shallow ground waters, which contain high levels of As. Thus, deep well water in Tibet is safe to drink.

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Section: Elemental Concentration and Hydrochemical Characteristics Ofmentioning

confidence: 99%

Distribution and Potential Health Risks of Arsenic, Selenium, and Fluorine in Natural Waters in Tibet, China

Tian

Zha

et al. 2016

Water

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“…This also suggests relatively short flow paths for these waters. Because dilute snowmelt runoff (dominated by Ca and HCO 3 ions) is an active agent in chemical weathering reactions that are occurring in the alpine watersheds (Zhu et al 2011), these trends indicate that the reactions during the short flow times in the mountain regions of the study area are important for the initial hydrochemical evolution (precipitation recharge to Ca-HCO 3 groups). The final phase of hydrochemical evolution occurs near the playa area (low elevations) where a very large increase in TDS are linked to increase in Na, SO 4 , and Cl, s u g g e s t i n g t h a t d i s s o l u t i o n o f s a l t s a n d evapotranspiration-concentration process are a significant control during the stage.…”

Section: Ground Water Evolution Along the Flow Pathmentioning

confidence: 96%

“…Zhu et al (2011Zhu et al ( , 2013b presented data suggesting the occurrence and weathering of silicate, carbonate, and sulfate dissolution based on the mineralogy of geological units and mineral saturation indices. The negative loading of Ca 2+ in this study, in opposition to the positive loadings in other major ions of the component 1 (Fig.…”

Section: Identification Of Natural (Geogenic) and Anthropogenic Groupmentioning

confidence: 99%

“…As rivers carry the imprints of chemical erosion on the continental and local scale in the forms of dissolved materials, geochemical methods have been applied widely to examine the spatial variability in the water's characteristics and to better understand the functioning of hydrosystems (e.g., Pilla et al 2006;Zhu and Yang 2007;Stadler et al 2010;Zhu et al 2011), as they are basically an independent method from hydraulics of filter flow and, therefore, enable to complement hydraulic methods on evaluating natural water recharge or mixing of waters from different origins. The objectives of this study were (1) to examine the processes controlling the geochemical genesis of ground waters in northern Xinjiang drainage system and (2) to identify the factors potentially governing the recharge and evolution of these waters, by using two well-known multivariate statistical methods.…”

Section: Introductionmentioning

confidence: 99%

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Statistical study to identify the key factors governing ground water recharge in the watersheds of the arid Central Asia

Zhu

Wang

2015

Environ Monit Assess

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Understanding the source and recharge of ground waters is of great significance to our knowledge in hydrological cycles in arid environments over the world. Northern Xinjiang in northwestern China is a significant repository of information relating to the hydrological evolution and climatic changes in central Asia. In this study, two multivariate statistical techniques, hierarchical cluster analysis (HCA) and principal component analysis (PCA), were used to assess the ground water recharge and its governing factors, with the principal idea of exploring the above techniques to utilize all available hydrogeochemical variables in the quality assessment, which are not considered in the conventional techniques like Stiff and Piper diagrams. Q-mode HCA and R-mode PCA were combined to partition the water samples into seven major water clusters (C1-C7) and three principal components (PC1-PC3, PC1 salinity, PC2 hydroclimate, PC3 contaminant). The water samples C1 + C4 were classified as recharge area waters (Ca-HCO 3 water), C2 + C3 as transitional zone waters (Ca-Mg-HCO 3 -SO 4 water), and C5 + C6 + C7 as discharge area waters (Na-SO 4 water). Based on the Q-mode PCA scores, three groups of geochemical processes influencing recharge regimes were identified: geogenic (i.e., caused by natural geochemical processes), geomorphoclimatic (caused by topography and climate), and anthropogenic (caused by ground water contamination). It is proposed that differences in recharge mechanism and ground water evolution, and possible bedrock composition difference, are responsible for the chemical genesis of these waters. These will continue to influence the geochemistry of the northern Xinjiang drainage system for a long time due to its steady tectonics and arid climate. This study proved that the chemistry differentiation of ground water can effectively support the identification of ground water recharge and evolution patterns.

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“…The groundwaters in oasis and riparian zone are close to the zone of rock dominance and the desert groundwaters are in the evaporation-crystallization. This feature is similar to other rivers and groundwater in the arid Central Asia [50]. Correlation matrices for TDS and the main ions (Table 2) are used to find relationship between every two of the variables.…”

Section: Water Qualitymentioning

confidence: 99%

Groundwater circulation relative to water quality and vegetation in an arid transitional zone linking oasis, desert and river

et al. 2013

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In groundwater-dependent ecosystems, groundwater circulation controls the overall water quality and ecosystem dynamics. Groundwater and vegetation across a 30-km groundwater transect linking oasis, desert and river in an extremely arid area were investigated with a series of soil profiles drilled into the unsaturated zone to understand groundwater circulation and its control on groundwater quality and surface vegetation in the extremely arid Lower Tarim River, NW China. Measurements have included water-table depth, water chemistry and water isotopes ( 2 H, 18 O, 3 H) for 15 water samples, soil moisture and chloride content for 11 soil profiles, and vegetation investigation. Results show that the groundwater in desert zone is characterized by slow recharge rate (pre-modern water), great water-table depth (6.17-9.43 m) and high salinity (15.32-26.50 g/L), while that in oasis (uncultivated land) and riparian zone is characterized by relatively fast recharge rate (modern water), small groundwater-table depth (3.56-8.36 m) and low salinity (1.25-1.95 g/L). Stable isotopes show that secondary evaporation takes place during irrigation in oasis. The vegetation characteristics (coverage, richness, evenness and number of plants) are closely related to soil moisture and water-table depth. Groundwater recharge from irrigation in oasis and from river in riparian zone sustains a better ecosystem than that in the desert area, where lateral and vertical groundwater recharge is limited. The more evapotranspirative enrichment may occur in the vegetated and water-rich riparian zone as compared to desert. This study also demonstrates the effectiveness of environmental tracers in studying ecohydrological processes in arid regions.isotope, soil profile, riparian zone, ecosystem, salinity, arid zone hydrology Citation:Huang T M, Pang Z H, Chen Y N, et al. Groundwater circulation relative to water quality and vegetation in an arid transitional zone linking oasis, desert and river.

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Hydrogeochemistry of three watersheds (the Erlqis, Zhungarer and Yili) in northern Xinjiang, NW China

Cited by 73 publications

References 33 publications

Distribution and Potential Health Risks of Arsenic, Selenium, and Fluorine in Natural Waters in Tibet, China

Distribution and Potential Health Risks of Arsenic, Selenium, and Fluorine in Natural Waters in Tibet, China

Statistical study to identify the key factors governing ground water recharge in the watersheds of the arid Central Asia

Groundwater circulation relative to water quality and vegetation in an arid transitional zone linking oasis, desert and river

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