中国沙漠 ›› 2024, Vol. 44 ›› Issue (1): 119-121.DOI: 10.7522/j.issn.1000-694X.2023.00069

• • 上一篇    

利用 14C测年法确定新月形沙丘移动速率

何晨晨1,2(), 王振亭1(), 王宗礼3   

  1. 1.中国科学院西北生态环境资源研究院,甘肃 兰州 730000
    2.中国科学院大学,北京 100049
    3.兰州大学 西部环境教育部重点实验室,甘肃 兰州 730000
  • 收稿日期:2023-04-05 修回日期:2023-06-29 出版日期:2024-01-20 发布日期:2023-12-26
  • 通讯作者: 王振亭
  • 作者简介:王振亭(E-mail:
  • 基金资助:

A case study on determining the migration speed of barchans based on carbon-14 dating

Chenchen He1,2(), Zhenting Wang1(), Zongli Wang3   

  1. 1.Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
    2.University of Chinese Academy of Sciences,Beijing 100049,China
    3.MOE Key Laboratory of Western China's Environmental Systems,Lanzhou University,Lanzhou 730000,China
  • Received:2023-04-05 Revised:2023-06-29 Online:2024-01-20 Published:2023-12-26
  • Contact: Zhenting Wang



关键词: 新月形沙丘, 移动速率, 植物残体, 14C测年


In the migration of active dunes, small psammophytes often die while being buried by the lee of the dune, and subsequently plant residues appear at the toe of the windward because of wind erosion. The mean migration speed of the dune during this time can be computed according to the death time measured by carbon-14 dating and the horizontal distance from the windward toe to the lee edge along the migration direction. Based upon this principle and selecting the residues of shrub stems as dating materials, the migration speeds of three barchans at the upwind marginal area of the Minqin oasis are obtained. Compared with the more accurate results given by the interpretation of remote sensing images, it is found that carbon-14 dating can successfully determine the maximum time-averaged migration speed of barchans during several decades.

Key words: barchans, migration speed, plant residue, carbon-14 dating