Recharge source and hydrogeochemical evolution of shallow groundwater in a complex alluvial fan system, southwest of North China Plain
文献类型：SCI/SSCI论文
| 作者 | Li F. D. ; Pan G. Y. ; Tang C. Y. ; Zhang Q. Y. ; Yu J. J. |
| 发表日期 | 2008 |
| 关键词 | groundwater recharge hydrogeochemistry evolution stable isotope oxygen-18 deuterium complex alluvial fan yellow-river isotopic methods water aquifer basin palaeochannels flow hydrochemistry environment sustainability |
| 英文摘要 | Many cities around the world are developed at alluvial fans. With economic and industrial development and increase in population, quality and quantity of groundwater are often damaged by over-exploitation in these areas. In order to realistically assess these groundwater resources and their sustainability, it is vital to understand the recharge sources and hydrogeochemical evolution of groundwater in alluvial fans. In March 2006, groundwater and surface water were sampled for major element analysis and stable isotope (oxygen-18 and deuterium) compositions in Xinxiang, which is located at a complex alluvial fan system composed of a mountainous area, Taihang Mt. alluvial fan and Yellow River alluvial fan. In the Taihang mountainous area, the groundwater was recharged by precipitation and was characterized by Ca-HCO(3) type water with depleted delta(18)O and delta D (mean value of -8.8 parts per thousand delta(18)O). Along the flow path from the mountainous area to Taihang Mt. alluvial fan, the groundwater became geochemically complex (Ca-Na-Mg-HCO(3)-Cl-SO(4) type), and heavier delta(18)O and delta D were observed (around -8 parts per thousand delta(18)O). Before the surface water with mean delta(18)O of -8.7 parts per thousand recharged to groundwater, it underwent isotopic enrichment in Taihang Mt. alluvial fan. Chemical mixture and ion exchange are expected to be responsible for the chemical evolution of groundwater in Yellow River alluvial fan. Transferred water from the Yellow River is the main source of the groundwater in the Yellow River alluvial fan in the south of the study area, and stable isotopic compositions of the groundwater (mean value of -8.8 parts per thousand delta(18)O) were similar to those of transferred water (-8.9 parts per thousand), increasing from the southern boundary of the study area to the distal end of the fan. The groundwater underwent chemical evolution from Ca-HCO(3), Na-HCO(3), to Na-SO(4). A conceptual model, integrating stiff diagrams, is used to describe the spatial variation of recharge sources, chemical evolution, and groundwater flow paths in the complex alluvial fan aquifer system. |
| 出处 | Environmental Geology |
| 卷 | 55 |
| 期 | 5 |
| 页 | 1109-1122 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0943-0105 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/23678]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Li F. D.,Pan G. Y.,Tang C. Y.,et al. Recharge source and hydrogeochemical evolution of shallow groundwater in a complex alluvial fan system, southwest of North China Plain. 2008. |
入库方式： OAI收割
来源：地理科学与资源研究所
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