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Article

Controlling Factors of Surface Water Ionic Composition Characteristics in the Lake Genggahai Catchment, NE Qinghai–Tibetan Plateau, China

MOE Key Laboratory of Tibetan Plateau Land Surface Processes and Ecological Conservation; Key Laboratory of Physical Geography and Environmental Processes; School of Geographical Science, Qinghai Normal University, Xining 810016, China
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Water 2019, 11(7), 1329; https://doi.org/10.3390/w11071329
Received: 31 March 2019 / Revised: 19 June 2019 / Accepted: 20 June 2019 / Published: 27 June 2019
(This article belongs to the Special Issue Environmental Chemistry of Water Quality Monitoring)
This study has determined the major ion compositions of surface waters within the basin of Lake Genggahai, northeastern Qinghai–Tibetan Plateau, China. The results showed that the anions in the groundwater and river water of Genggahai Lake are mainly HCO3, and the cations are mainly Ca2+ + Na+. Evaporite, carbonate, and silicate in the basin all have an impact on the chemical composition of river water and groundwater. Among them, carbonate weathering has a relatively larger contribution. The grazing activities of herdsmen in the basin have had a certain degree of impact on the water quality of river basins and groundwater. The anion of lake water is dominated by Cl, and the cation is mainly Na+. The content change is mainly affected by the change of corresponding ion content in groundwater coming into the lake and the evaporation of lake water. Among them, Cl in lake water is more affected by the change of Cl content in the groundwater coming into the lake, while Na+ in lake water is more affected by evaporation. More specifically, the low concentrations of Ca2+ and HCO3 in lake water were determined to be related to the photosynthesis of aquatic plants in the lake. View Full-Text
Keywords: ion compositions of water; hydrochemistry; hydrogeochemistry; rock weathering; Genggahai Lake; Northeastern Qinghai–Tibetan Plateau ion compositions of water; hydrochemistry; hydrogeochemistry; rock weathering; Genggahai Lake; Northeastern Qinghai–Tibetan Plateau
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MDPI and ACS Style

Jin, Y.; Jin, X.; Yang, D.; Mao, X. Controlling Factors of Surface Water Ionic Composition Characteristics in the Lake Genggahai Catchment, NE Qinghai–Tibetan Plateau, China. Water 2019, 11, 1329. https://doi.org/10.3390/w11071329

AMA Style

Jin Y, Jin X, Yang D, Mao X. Controlling Factors of Surface Water Ionic Composition Characteristics in the Lake Genggahai Catchment, NE Qinghai–Tibetan Plateau, China. Water. 2019; 11(7):1329. https://doi.org/10.3390/w11071329

Chicago/Turabian Style

Jin, Yanxiang, Xin Jin, Dengxing Yang, and Xufeng Mao. 2019. "Controlling Factors of Surface Water Ionic Composition Characteristics in the Lake Genggahai Catchment, NE Qinghai–Tibetan Plateau, China" Water 11, no. 7: 1329. https://doi.org/10.3390/w11071329

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