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| Characteristics and Indicative Significance of Oxygen and Hydrogen Isotopes in Water Environment of Lhasa River Basin |
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Received:July 16, 2020
Revised:July 21, 2020
Accepted:July 22, 2020
Published Online:October 31, 2020
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| DOI：doi：10.3969/j.issn.1007-7545.2020.11.018 |
| KeyWord:Lhasa River Basin; hydrogen and oxygen isotopes; altitude effect; deuterium excess (d-excess) |
| Author | Institution |
| LIN Cong-ye |
东华理工大学核资源与环境国家重点实验室 |
| GAO Bai |
东华理工大学核资源与环境国家重点实验室 |
| HUA En-xiang |
东华理工大学长江学院 |
| ZHANG Hai-yang |
东华理工大学核资源与环境国家重点实验室 |
| YANG Fen |
东华理工大学核资源与环境国家重点实验室 |
| GAO Yang |
东华理工大学核资源与环境国家重点实验室 |
| JIANG Wen-bo |
东华理工大学核资源与环境国家重点实验室 |
| JIANG Xin-yue |
东华理工大学核资源与环境国家重点实验室 |
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| Abstract: |
| In order to understand characteristics of hydrogen and oxygen isotopes in water environment and relationship between river water and groundwater in Lhasa River Basin, hydrogen and oxygen isotopes in Lhasa River water and groundwater were collected and analyzed in August 2019. The results show that the δD and δ18O values of Lhasa River water are -151.22‰ to -132.24‰ and -20.49‰ to -18.13‰ respectively, and the δD and δ18O values of groundwater vary from -147.69‰ to -120.86‰ and -19.56‰ to -16.08‰ respectively, both within the scope of global and China meteoric precipitation value. The groundwater heavy isotopes enrichment degree is stronger than the river water, the δD and δ18O values of river water and groundwater have the similar change characteristic, both have the certain hydraulic connection. Local meteoric precipitation is the main recharge source of water body in the basin. In addition to recharge of precipitation, groundwater also receives recharge from Lhasa River. There are obvious climatic characteristics of arid and semi-arid regions in the basin, and the precipitation water vapor is mainly affected by the Marine air mass in the bay of Bengal. |
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