Shallow groundwater dynamics and origin of salinity at two sites in salinated and water-deficient region of North China Plain, China
文献类型：SCI/SSCI论文
| 作者 | Wang P. |
| 发表日期 | 2012 |
| 关键词 | Shallow groundwater level Salinity Temperature gradient Stable isotopes North China Plain salinization aquifer isotope system island korea area soil |
| 英文摘要 | Large salinated areas are distributed in the middle and east of the North China Plain (NCP), where the fresh water shortage is serious. In this study, two sites in Cangzhou (CZ) and Hengshui (HS) of Hebei Province were selected to study the dynamics of shallow groundwater level and salinity. Electrical conductivity (EC) of groundwater was combined with the isotope compositions of delta O-18 and delta H-2 to identify the origin of salinity. Results showed that the dynamics of groundwater level at both sites were mainly controlled by precipitation and evaporation. Soil texture and structure played a significant role in the dynamics of salinity. The summer precipitation diluted the EC of groundwater at the HS site with homogeneous soil of sand loam, suggesting the larger infiltration rate; however, it did not dilute the EC at the CZ site with heterogeneous soil of sand loam and silt loam, suggesting that the summer precipitation could not recharge the groundwater directly. In winter, the EC decreased rapidly due to the temperature gradient underground if the groundwater was above the threshold level (at least 3 m below the ground surface) after the rainy season. Isotopes of delta O-18 and delta H-2 showed that precipitation was the major recharge source for the groundwater at the two sites. The salt mainly comes from the dissolution of soil or rock at the CZ site. While, the evaporation effect was strong at the HS site leading to the increase of the salt concentration. |
| 出处 | Environmental Earth Sciences |
| 卷 | 66 |
| 期 | 3 |
| 页 | 729-739 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1866-6280 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/26768]  |
| 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 | Wang P.. Shallow groundwater dynamics and origin of salinity at two sites in salinated and water-deficient region of North China Plain, China. 2012. |
入库方式： OAI收割
来源：地理科学与资源研究所
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