| 青海湖流域草甸土光释光年代学研究 |
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| 引用本文： | 鄂崇毅,张 晶,吴成永,孙永娟,孙满平,闫文亭,李 萍,吕顺昌.青海湖流域草甸土光释光年代学研究[J].土壤学报,2018,55(6):1325-1335. |
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| 作者姓名： | 鄂崇毅 张 晶 吴成永 孙永娟 孙满平 闫文亭 李 萍 吕顺昌 |
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| 作者单位： | (1青海师范大学地理科学学院;青海省自然地理与环境过程重点实验室;西宁810008)(2中国科学院青海盐湖研究所;西宁810008) |
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| 基金项目： | 国家自然科学基金项目（41761042，41361047）和青海省自然科学基金项目（2017-ZJ-901） |
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| 摘 要： | 高山草甸土是青藏高原的主要土壤类型,其特征为土层薄、土壤发育微弱,但由于土壤具体的发育时代尚不明晰,限制了对草甸土成土过程和气候背景的理解。选取青海湖流域西南部的橡皮山顶草甸土两个剖面(XPSD1、XPSD2)和东南部的日月山垭口两个剖面(RYS1、RYS2)进行了光释光(Optically Stimulated Luminescence, OSL)年代学研究,系统分析草甸土中颗粒(38～63μm)石英单片再生法测年的可靠性,探讨了草甸土发育的气候背景。结果表明:(1)OSL测年方法可有效运用于高山草甸土的测年中,释光自检验表明该测年结果可靠。(2)四个剖面的年代结果显示,现存的草甸土主要是晚全新世(4～0 ka)形成的,可能是相对干冷气候下的产物,其成土发育过程以风尘加积为主。(3)橡皮山顶2号剖面底部的黄土母质年代为16.2±1.8 ka,与上部土壤呈假整合接触,存在约14 ka的沉积间断。
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| 关 键 词： | 青海湖 高山草甸土 光释光测年 土壤年代学 |
| 收稿时间： | 2018/1/9 0:00:00 |
| 修稿时间： | 2018/3/29 0:00:00 |
Study of Chronology of the Meadow Soil in the Qinghai Lake Basin by Means of Optically Stimulated Luminescence |
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| Institution: | School of Geographical Science, Key Laboratory of Physical Geography and Environmental Processes of Qinghai Province, Qinghai Normal University,School of Geographical Science, Key Laboratory of Physical Geography and Environmental Processes of Qinghai Province, Qinghai Normal University,School of Geographical Science, Key Laboratory of Physical Geography and Environmental Processes of Qinghai Province, Qinghai Normal University,School of Geographical Science, Key Laboratory of Physical Geography and Environmental Processes of Qinghai Province, Qinghai Normal University,School of Geographical Science, Key Laboratory of Physical Geography and Environmental Processes of Qinghai Province, Qinghai Normal University,School of Geographical Science, Key Laboratory of Physical Geography and Environmental Processes of Qinghai Province, Qinghai Normal University,School of Geographical Science, Key Laboratory of Physical Geography and Environmental Processes of Qinghai Province, Qinghai Normal University and School of Geographical Science, Key Laboratory of Physical Geography and Environmental Processes of Qinghai Province, Qinghai Normal University |
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| Abstract: | |
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| Keywords: | Qinghai Lake Alpine meadow soils OSL dating Soil Chronology |
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