| 毛乌素沙地15ka以来气候变化及沙漠演化研究 |
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| 引用本文： | 鲁瑞洁,王亚军,张登山. 毛乌素沙地15ka以来气候变化及沙漠演化研究[J]. 中国沙漠, 2010, 30(2): 273-277 |
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| 作者姓名： | 鲁瑞洁 王亚军 张登山 |
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| 作者单位： | 1. 北京师范大学,环境演变与自然灾害教育部重点实验室,北京,100875
2. 北京师范大学,环境演变与自然灾害教育部重点实验室,北京,100875;河北工程大学,资源学院,河北,邯郸,056038 |
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| 摘 要： | 通过对毛乌素沙地东南缘的三道沟剖面进行沉积学分析,结合常规14C和光释光测年结果,并与已有研究进行对比,将毛乌素沙地15ka以来的演化过程分为4个阶段:15ka以前,处于末次冰期极盛期的后期,冬季风活动强烈,气候干冷、风蚀强烈,沙漠处于活化扩张阶段;15～6.33kaBP,气候逐渐回暖,风力减弱,但沙丘仍处于活化状态,期间可能有气候的暖湿波动;6.33～3.5kaBP,夏季风活动较强,冬季风活动较弱,气候总体温暖湿润,沙丘固定、沙漠退缩,其中又存在一些干冷波动,5kaBP前后气候曾发生突变;3.5kaBP以来,冬季风活动又逐渐增强,夏季风活动减弱,气候寒冷干燥,风沙活动增强。
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| 关 键 词： | 15ka以来 毛乌素沙地 气候变化 沙漠演化 |
| 收稿时间： | 2009-05-10 |
| 修稿时间： | 2009-07-20 |
Climate Changes and Desert Evolution of Mu Us Desert since 15 ka BP |
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| LU Rui-jie,WANG Ya-jun,ZHANG Deng-shan. Climate Changes and Desert Evolution of Mu Us Desert since 15 ka BP[J]. ournal of Desert Research, 2010, 30(2): 273-277 |
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| Authors: | LU Rui-jie WANG Ya-jun ZHANG Deng-shan |
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| Affiliation: | LU Rui-jie1,WANG Ya-jun1,2,ZHANG Deng-shan1(1.Key Laboratory of Environmental Change and Natural Disaster (Beijing Normal University),Ministry of Education,Beijing 100875,China,2.The Resource College of Hebei University of Engineering,Handan 056038,Hebei,China) |
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| Abstract: | The transitional area between Mu Us Desert and Loess Plateau is typically sensitive to global changes,so this area is ideal for research of climate change and desert evolution.Through analysis on sediments in Sandaogou section that located on desert-loess transitional area,in combination with 14C dating and optically stimulated luminescence dating and the former researches,the characteristics of climate change and desert evolution in Mu Us Desert since15 ka BP are discussed:(1)Before 15 ka BP,Mu Us Desert e... |
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| Keywords: | since 15 ka BP Mu Us Desert climate change desert evolution |
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