| 青藏高原那曲河流域降水及河流水体中氧稳定同位素研究 |
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| 引用本文： | 田立德,姚檀栋,沈永平,杨梅学,叶柏生,Atusi.NUMAGUTI,Maki TSUJIMURA.青藏高原那曲河流域降水及河流水体中氧稳定同位素研究[J].水科学进展,2002,13(2):206-210. |
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| 作者姓名： | 田立德 姚檀栋 沈永平 杨梅学 叶柏生 Atusi.NUMAGUTI Maki TSUJIMURA |
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| 作者单位： | 1.中国科学院寒区旱区环境与工程研究所, 甘肃, 兰州, 730000; |
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| 基金项目： | 国家重点基础研究发展规划(G1998040800);中国科学院创新方向项目(KZCX2-301);日本GAME/Tibet项目资助 |
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| 摘 要： | 根据青藏高原中部那曲河流域1998年夏季测得的上下游中稳定同位素的日变化,并与同期观测的流域降水中稳定同位素比较,分析了河水中δ18O的变化特征,初步研究了该流域的稳定同位素水文循环过程.河水中δ18O的变化幅度远小于降水,它是降水中δ18O、降水量以及地表蒸发过程共同作用的结果.研究发现湖水对于稳定同位素变化起着显著的调节作用.河水中δ18O与流域降水中δ18O的差异可能反映了该流域强烈的地表和湖面蒸发作用.
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| 关 键 词： | 那曲河流域 河流水体 稳定同位素 水文循环 |
| 文章编号： | 1001-6791(2002)02-0206-05 |
| 收稿时间： | 2001-01-18 |
| 修稿时间： | 2001年1月18日 |
Study on stable isotope in river water and precipitation in Naqu River basin, Tibetan Plateau |
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| Atusi.NUMAGUTI,Maki TSUJIMURA.Study on stable isotope in river water and precipitation in Naqu River basin, Tibetan Plateau[J].Advances in Water Science,2002,13(2):206-210. |
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| Authors: | AtusiNUMAGUTI Maki TSUJIMURA |
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| Institution: | 1.Cold and Arid Regions Environment and Engineering Research Institute, Chinese Academy of Science, Lanzhou 730000, China;2.Graduate School of Environmental Earth Science, Hokkaido University, Japan;3.Institute of Geoscience, University of Tsukuba, Japan |
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| Abstract: | The stable isotope hydrological processes in Naqu River basin,middle of the Tibetan Plateau, was studied based on the observations of δ18O in both river water and precipitation during the summer in 1998. The fluctuation amplitude of δ18O is much smaller in river water than in precipitation. The variation of δ18O in river water is a combined effect of δ18O in river water,precipitation amount and surface evaporation. The study also found the obvious impact of lake water on stable isotope homogeneity in river water. The difference between the weighted δ18O in river water and lake water reflects the strong soil surface and lake surface evaporation in the research basin. |
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| Keywords: | Naqu River basin river water stable isotope hydrological cycle |
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