| 南水北调中线水源地河水地球化学特征与流域侵蚀 |
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| 引用本文： | 徐志方,唐杨. 南水北调中线水源地河水地球化学特征与流域侵蚀[J]. 矿物岩石地球化学通报, 2011, 30(1): 26-30 |
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| 作者姓名： | 徐志方 唐杨 |
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| 作者单位： | 1. 中国科学院工程地质力学重点实验室地质与地球物理研究所,北京,100029
2. 环境地球化学国家重点实验室,中国科学院地球化学研究所,贵阳,550002;中国科学院研究生院,北京,100049 |
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| 基金项目： | 国家自然科学基金资助项目(40773077); 环境地球化学国家重点实验室开放基金资助项目 |
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| 摘 要： | 丹江口水库及其上游流域是南水北调中线工程的水源地,本文讨论了水源地河流水化学与锶同位素(87Sr/86Sr)组成变化特征,目的在于了解水源地流域河流地表水溶质的物质来源以及岩石风化侵蚀过程和人为活动的影响。流域内河流水化学组成以Ca2+、HCO3-为主,Mg2+和SO42-次之,反映了碳酸盐岩风化溶解起控制作用的典型特征。水化学分析表明水源地河水受到工农业活动等人为因素的影响;河流87Sr/86Sr同位素地球化学研究表明,流域岩石风化输入至少存在三个不同端员(硅酸岩、石灰岩和白云岩)之间的混合。水源地流域内硅酸岩和碳酸岩的风化侵蚀速率分别为38.6和4.4 t/km2.a,总岩石风化侵蚀速率高于全球河流平均值。
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| 关 键 词： | 南水北调 水源地 地球化学 流域侵蚀 |
Hydrogeochemistry of the Water Source Area of the Middle Route of China's South to North Water Transfer Project |
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| XU Zhi-fang,TANG Yang. Hydrogeochemistry of the Water Source Area of the Middle Route of China's South to North Water Transfer Project[J]. Bulletin of Mineralogy Petrology and Geochemistry, 2011, 30(1): 26-30 |
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| Authors: | XU Zhi-fang TANG Yang |
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| Affiliation: | XU Zhi-fang1,TANG Yang2,31.Key Laboratory of Engineering Geomechanics,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China,2.State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,Guiyang 550002,3.Graduate School of Chinese Academy of Sciences,Beijing 100049 |
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| Abstract: | The upper Hanjiang River basin is the water source area of the Middle Route of South to North Water Transfer Project of China.The chemical and strontium isotopic compositions of the river water are determined with a main purpose to understand the chemical weathering processes and anthropogenic influences.The ionic composition of river waters is characterized by dominance of Ca2+,HCO-3,and followed by Mg2+ and SO2-4.Analyses of the stoichiometry of the river water show that the water chemistry is controlled ... |
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| Keywords: | South to north water transfer project water source area hydrogeochemistry chemical weathering |
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