| 毛乌素沙地历史时期沙漠化——基于北大池湖泊周边沉积剖面粒度的研究 |
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| 引用本文： | 黄银洲,王乃昂,程弘毅,马宁,来婷婷.毛乌素沙地历史时期沙漠化——基于北大池湖泊周边沉积剖面粒度的研究[J].中国沙漠,2013,33(2):426-432. |
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| 作者姓名： | 黄银洲 王乃昂 程弘毅 马宁 来婷婷 |
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| 作者单位： | 1.兰州大学 资源环境学院, 甘肃 兰州 730000;
2.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： | 教育部人文社会科学一般项目青年类，国家自然科学基金青年科学基金项目，教育部博士点基金新教师类，兰州大学中央高校基本科研业务费专项资金 |
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| 摘 要： | 通过深入分析毛乌素沙地内北大池古城东侧一处包含人类活动层的沉积剖面的粒度参数,结合14C、OSL（光释光）测年和历史文献记载,本研究重建了北大池周边历史时期以来的环境及人类活动过程。结果显示:北大池湖泊在历史时期处于断续退缩过程之中,剖面北侧的河流水量一直减少。剖面中粗颗粒含量的变化与湖泊退缩和河流水量减少存在较好的相关性,剖面点周边地表沙丘出现的大致时间为明末,该结论与众多测年结果相符。该研究对理解毛乌素沙地环境变化的空间尺度具有较好的启示意义,同时在揭示沙漠化的内部环境变化过程中具有重要作用。
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| 关 键 词： | 毛乌素沙地 历史时期沙漠化 北大池剖面 历史文献 水环境变化 |
| 收稿时间： | 2012-04-25 |
| 修稿时间： | 2012-05-23 |
Historical Desertification in the Mu Us Sandy Land: An analysis on grain size data from the Beidachi section |
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| HUANG Yin-zhou,WANG Nai-ang,CHENG Hong-yi,MA Ning,LAI Ting-ting.Historical Desertification in the Mu Us Sandy Land: An analysis on grain size data from the Beidachi section[J].Journal of Desert Research,2013,33(2):426-432. |
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| Authors: | HUANG Yin-zhou WANG Nai-ang CHENG Hong-yi MA Ning LAI Ting-ting |
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| Institution: | 1.College of the Earth & Environmental Sciences, Lanzhou University, Lanzhou 730000, China;
2.Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China |
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| Abstract: | Historical desertification in the Mu Us Sandy Land is a focus on the study of the relationship between nature factors and human beings. In this paper, a section located at southwest of the Mu Us Sandy Land was studied based on an analysis of grain size parameters. Together with an analysis on its chronology and historical record, the results showed that the Beidachi Lake and the river close to the section had retreated continuously in history and the dunes appeared at the end of Ming dynasty approximately. This study would give new knowledge for understanding the special-temporal change of the Mu Us Sandy Land in history and had great significance in studying Mu Us Sandy Land environmental change. |
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| Keywords: | the Mu Us Sandy Land historical desertification Beidachi section historical texts water environment change |
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