| 藏南普莫雍错流域水体离子组成与空间分布及其环境意义 |
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| 引用本文： | 鞠建廷,朱立平,汪勇,谢曼平,彭平,甄晓林,王君波.藏南普莫雍错流域水体离子组成与空间分布及其环境意义[J].湖泊科学,2008,20(5):591-599. |
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| 作者姓名： | 鞠建廷 朱立平 汪勇 谢曼平 彭平 甄晓林 王君波 |
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| 作者单位： | 1. 中国科学院地理科学与资源研究所,北京,100101;《中国科学》杂志社,北京100717
2. 中国科学院青藏高原研究所,北京,100085 |
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| 基金项目： | 国家自然科学基金，国家重点基础研究发展计划(973计划)，中国科学院知识创新工程项目 |
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| 摘 要： | 对藏南普莫雍错湖水及其周围人湖河流水体进行了离子化学成分分析,对部分湖泊和河流水样作氧同位紊分析.结果显示,不同入湖河流离子组成与湖水本身离子组成有较大差异.湖水的主要离子组合是Mg2 -Ca2 -HCO3-SO42-,而主要补给河流加曲为Ca2 -Mg2 -HCO3-.加曲人湖河口2m水深以内水化学性质差异大,湖泊其他地区差异小.加曲对河口三角洲之上湖水影响显著.其他河流对河口处湖水影响较小.Gibbs图显示湖水离子的组成主要与流域内的岩石风化有关.离子比例和三角图分析说明控制入湖河水离子主要过程是碳酸盐、黄铁矿和硅酸盐风化.湖泊与河流水体离子的组成差异较大,原因可能是蒸发浓缩导致的CaCO3的沉淀.其结果有助于正确理解湖泊沉积碳酸盐的环境指示意义.
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| 关 键 词： | 普莫雍错 主要离子 氧同位素 空间分布 沉积过程 |
| 收稿时间： | 2007/7/26 0:00:00 |
| 修稿时间： | 2007/10/15 0:00:00 |
Composition, spatial distribution and environmental significance of water ions in Lake Pumayum Co and its catchment, Southern Tibet |
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| JU Jian-ting,ZHU Li-ping,WANG Yong,XIE Man-ping,PENG Ping,ZHEN Xiao-lin and WANG Jun-bo.Composition, spatial distribution and environmental significance of water ions in Lake Pumayum Co and its catchment, Southern Tibet[J].Journal of Lake Science,2008,20(5):591-599. |
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| Authors: | JU Jian-ting ZHU Li-ping WANG Yong XIE Man-ping PENG Ping ZHEN Xiao-lin and WANG Jun-bo |
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| Institution: | 1: Institute of Geographical Sciences and Natural Resources Research;Chinese Academy of Sciences;Beijing 100101;P.R.China;2: Institute of Tibetan Plateau Research;Beijing 100085;P.R.China;3: Science in China Press;Beijing 100717;P.R.China |
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| Abstract: | The chemistry of major cations (Mg2+, Ca2+, Na+ and K+) and anions (HCO3-, SO42- and Cl-) in the water of Lake Pumayum Co and of its inflow river were studied, and the results revealed the obvious ionic difference among various inflow rivers and the lake. The chemical type of the lake water was Mg2+-Ca2+-HCO3--SO42-, and the major ions of the main inflow river were Ca2+ -Mg2+-HCO3-. In the lake inlet within the depth less than 2m of Jiaqu River, the main inflow river, there was significant variance of water... |
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| Keywords: | Lake Pumayum Co major ion chemistry oxygen isotope spatial distribution sedimentary process |
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