| 昆仑山北坡黄土粒度特征与环境意义初探 |
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| 引用本文： | 柳加波,温仰磊,赵爽,李冠华,贾佳,魏海涛,夏敦胜. 昆仑山北坡黄土粒度特征与环境意义初探[J]. 地球环境学报, 2014, 0(2): 76-84 |
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| 作者姓名： | 柳加波 温仰磊 赵爽 李冠华 贾佳 魏海涛 夏敦胜 |
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| 作者单位： | 兰州大学 西部环境教育部重点实验室，干旱环境与气候变化协同创新中心，兰州 730000,兰州大学 西部环境教育部重点实验室，干旱环境与气候变化协同创新中心，兰州 730000,兰州大学 西部环境教育部重点实验室，干旱环境与气候变化协同创新中心，兰州 730000,兰州大学 西部环境教育部重点实验室，干旱环境与气候变化协同创新中心，兰州 730000,兰州大学 西部环境教育部重点实验室，干旱环境与气候变化协同创新中心，兰州 730000,兰州大学 西部环境教育部重点实验室，干旱环境与气候变化协同创新中心，兰州 730000,兰州大学 西部环境教育部重点实验室，干旱环境与气候变化协同创新中心，兰州 730000 |
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| 基金项目： | 国家重点基础研究发展规划项目(2010CB950202)；国家自然科学基金项目(41130102，41071125)
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| 摘 要： | 昆仑山北坡沉积了极端干旱区巨厚的黄土，不仅记录了塔克拉玛干沙漠的发生发展过程，也蕴含了西风环流的演化信息。该地区气候干旱，成壤作用弱，靠近物源，黄土记录了沉积时的粒度特征，是研究风动力变化的良好载体。本文选取昆仑山北坡的普鲁剖面进行详细的粒度分析，结果表明黄土颗粒较粗，是沙漠的近源沉积，搬运动力较强。通过粒级– 标准偏差变化计算，黄土粒度可以分为粉砂（<36 μm）和细砂（>36 μm）两个敏感粒级组分。依据塔里木盆地内的现代环流特征，粉砂组分主要与近地面较弱的环流风场有关，而细砂组分主要由盆地南缘频发的沙尘暴搬运，并且沙尘暴对沙尘的搬运作用可能更为显著。
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| 关 键 词： | 昆仑山黄土；粒度；敏感组分 |
| 收稿时间： | 2013-12-20 |
Grain-size characteristics of Kunlun Mountains loess and its environmental implication |
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| LIU Jia-bo,WEN Yang-lei,ZHAO Shuang,LI Guan-hu,JIA Ji,WEI Hai-tao and XIA Dun-sheng. Grain-size characteristics of Kunlun Mountains loess and its environmental implication[J]. Journal of Earth Environment, 2014, 0(2): 76-84 |
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| Authors: | LIU Jia-bo WEN Yang-lei ZHAO Shuang LI Guan-hu JIA Ji WEI Hai-tao XIA Dun-sheng |
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| Affiliation: | Key Laboratory of Western China''s Environmental Systems, Ministry of Education of People''s Republic of China, CollaborativeInnovation Centre for Arid Environments and Climate Change, Lanzhou University, Lanzhou 73000, China,Key Laboratory of Western China''s Environmental Systems, Ministry of Education of People''s Republic of China, CollaborativeInnovation Centre for Arid Environments and Climate Change, Lanzhou University, Lanzhou 73000, China,Key Laboratory of Western China''s Environmental Systems, Ministry of Education of People''s Republic of China, CollaborativeInnovation Centre for Arid Environments and Climate Change, Lanzhou University, Lanzhou 73000, China,Key Laboratory of Western China''s Environmental Systems, Ministry of Education of People''s Republic of China, CollaborativeInnovation Centre for Arid Environments and Climate Change, Lanzhou University, Lanzhou 73000, China,Key Laboratory of Western China''s Environmental Systems, Ministry of Education of People''s Republic of China, CollaborativeInnovation Centre for Arid Environments and Climate Change, Lanzhou University, Lanzhou 73000, China,Key Laboratory of Western China''s Environmental Systems, Ministry of Education of People''s Republic of China, CollaborativeInnovation Centre for Arid Environments and Climate Change, Lanzhou University, Lanzhou 73000, China and Key Laboratory of Western China''s Environmental Systems, Ministry of Education of People''s Republic of China, CollaborativeInnovation Centre for Arid Environments and Climate Change, Lanzhou University, Lanzhou 73000, China |
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| Abstract: | |
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| Keywords: | Kunlun Mountains loess grain-size sensitive fraction |
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