| Cite this article: | 翟婧雅,金彦香,金鑫.巴音河流域水体水化学、氢氧同位素特征及不同水体转换研究[J].灌溉排水学报,0,():-. |
| zhai jing ya,jin yan xiang,jin xin.巴音河流域水体水化学、氢氧同位素特征及不同水体转换研究[J].灌溉排水学报,0,():-. |
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| Hydrochemical, hydrogen and oxygen isotopic features and transformation of different water bodies in Bayin River Basin |
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zhai jing ya, jin yan xiang, jin xin
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Qinghai Normal University
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| Abstract: |
| 【Objective】Described the transformation relationship between different water bodies in Bayin river basin with shortage and uneven temporal and spatial distributions.【Method】This study analyzed the hydrochemical characteristics of different water bodies in Bayin River Basin based on the combination of hydrochemical and stable isotope techniques, and discussed the characteristics and control sources of water ion content, and identified the recharge mechanisms between different water bodies.【Result】(1) The average values of pH, TDS and DO of water samples are 7.53, 399 mg/L and 5.46 mg/L respectively; The anions in river water and spring water are mainly SO42-, the anions in groundwater are mainly Cl-, and the cations in water are mainly Ca2+. (2) Na+/(Na++Ca2+) ratio is mainly distributed between evaporation crystallization and rock weathering zone, and fars away from atmospheric precipitation zone. (3) The slope of water evaporation line in Bayin River Basin (4.94) is significantly lower than that of local and global atmospheric precipitation lines; The average value of stable hydrogen and oxygen isotopes in the river water is between the average values of atmospheric precipitation and groundwater in the northern mountain area of the basin.【Conclusion】(1) Evaporation crystallization and rock weathering are the main factors controlling the hydrochemical characteristics of water bodies in the basin, and the weathering and dissolution of evaporite and carbonate are the main sources of water ions. (2) The upstream groundwater is recharged by surface water leakage and lateral runoff, accounting for 43.36% and 56.64% respectively; The groundwater in the middle reaches is recharged by surface water and upstream rivers, accounting for 69.51% and 30.49% respectively; The downstream surface water is recharged by groundwater and spring water, accounting for 10.26% and 89.74% respectively. |
| Key words: Hydrochemistry; Stable isotopes; Hydrological processes; Arid inland river basin |
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