| 内蒙古合同察汗淖碱湖成碱过程中的生物地球化学作用 |
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| 引用本文： | 贾国东,蔡克勤.内蒙古合同察汗淖碱湖成碱过程中的生物地球化学作用[J].地质论评,1997,43(4):388-393. |
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| 作者姓名： | 贾国东 蔡克勤 |
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| 作者单位： | 中国地质大学 北京
(贾国东)，中国地质大学 北京(蔡克勤) |
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| 基金项目： | 国家“八.五”，自然科学基金资助项目(编号49132025) |
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| 摘 要： | 本文介绍了内蒙古合同察汗淖碱湖的自然环境、地质演变过程和碱湖卤水的形成演化机理。指出补给碱湖的初始淡水中2(Ca~(2+)+Mg~(2+))/HCO_3~-的摩尔比值接近于1(0.96),不利于向碱性卤水的演化。然而,在从淡潜水向高浓度碱性卤水演变过程中存在着明显的碱质富集现象。这种现象与当地的生态环境和生物地球化学作用密切相关。以富集钠元素为特征的干旱耐盐碱植被为湖水富集碱质作出了重要贡献。
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| 关 键 词： | 碱湖 生物地球化学 耐旱耐盐碱植被 内蒙古合同察汗淖 |
BIOGEOCHEMICAL PROCESS DURING SODA MINERALIZATION IN THE HETONG QAHAN NUR SODA LAKE, INNER MONGOLIA |
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| Jia Guodong and Cai Keqin.BIOGEOCHEMICAL PROCESS DURING SODA MINERALIZATION IN THE HETONG QAHAN NUR SODA LAKE, INNER MONGOLIA[J].Geological Review,1997,43(4):388-393. |
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| Authors: | Jia Guodong and Cai Keqin |
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| Abstract: | This paper introduces the natural enviorenment, geological evolution nd soda-forming mechanism of the Hetong Qahan Nur Soda Lake in Inner Mongolia. It is suggested that in the initial dilute groundwater recharging the lake, the 2(Ca2++Mg2+)/HCO3- molar ratio should be close to 1 (0. 96), which is disadvantagous to the formation of soda brines. But during the evolution from dilute water to high-concentrated soda brine, there are obvious gains of Na+ and HCO3- + CO32-. Drought-enduring and halotolerant (alkaliotolerant) plants which are rich in Na in their bodies may contribute much to the gains. |
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| Keywords: | soda lake biogeochemistry drought-enduring plant halotolerant and alkaliotoler-ant plant |
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