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中国沙漠 ›› 2023, Vol. 43 ›› Issue (6): 197-209.DOI: 10.7522/j.issn.1000-694X.2023.00150

• • 上一篇    

青海湖地区风沙活动研究进展

莫皓焜(), 胡光印(), 孟惠聪   

  1. 陕西师范大学 地理科学与旅游学院,陕西 西安 710119
  • 收稿日期:2023-09-26 修回日期:2023-10-23 出版日期:2023-11-20 发布日期:2023-11-30
  • 通讯作者: 胡光印
  • 作者简介:胡光印(E-mail: guangyinhu@snnu.edu.cn
    莫皓焜(1997—),男,广东肇庆人,硕士研究生,主要从事风沙地表过程相关研究。E-mail: mhkunn@163.com
  • 基金资助:
    国家自然科学基金项目(42071004);第二次青藏高原综合科学考察研究项目(2019QZKK0403)

Research progress on aeolian activity in the Qinghai Lake area, northeastern Tibetan Plateau

Haokun Mo(), Guangyin Hu(), Huicong Meng   

  1. School of Geography and Tourism,Shaanxi Normal University,Xi'an 710119,China
  • Received:2023-09-26 Revised:2023-10-23 Online:2023-11-20 Published:2023-11-30
  • Contact: Guangyin Hu

摘要:

青海湖位于青藏高原的东北缘,地处青藏高原与黄土高原的过渡地带,一直是风沙活动与风成沉积研究的理想区域。在现有的研究成果基础上,综述了青海湖地区的风沙活动研究进展,包括沙地分布,历史风沙活动记录,风成沉积的物源、输送过程、沉积特征,风沙地貌,以及土地沙漠化。当前,湖东与湖西是青海湖地区主要的沙地分布区,沙地内风成沉积的粒度、化学等沉积特征表明,更新世晚期、全新世早期、全新世晚期为青海湖地区主要的风沙活动时期。该地区位于气候变化的敏感区,气候环境多变,且湖东与湖西沙地的物源不同,风沙活动的输送过程常受大气环流与区域风况的影响。此外,青海湖沙地内沙丘广布,土地沙漠化受自然与人为因素影响而变化明显,但沙漠化程度有减弱的趋势。未来可在青海湖地区古气候环境的演化和差异、年代学框架的建立与完善、风沙活动过程等方面,进行更深入的研究。

关键词: 青海湖, 风沙活动, 环境变化, 风成沉积, 青藏高原

Abstract:

Qinghai Lake, located in the northeast margin of the Qinghai-Tibet Plateau and the transition region between the Qinghai-Tibet Plateau and the Loess Plateau, has always been an ideal area for the study of aeolian activity and aeolian sediments. Based on the existing results, we summarize research that improves our understanding of aeolian processes in the Qinghai Lake, including the distribution of sandy land, historical aeolian activity records, the provenance, transport process, and characteristics of aeolian sediments, aeolian geomorphology and land desertification. At present, the east and west of the lake are the main sandy land. Indicated by the grain size, chemistry and other sedimentary characteristics, the late Pleistocene, early Holocene and late Holocene were the main periods of aeolian activities and climatic variability in the Qinghai Lake. The provenance of the Hudong and the Huxi sandy land were different. The transport process is often affected by atmospheric circulation and regional wind conditions. In addition, the sandy land whose land desertification changes obviously under the influence of natural and human factors is covered with sand dunes, but the desertification degree has a tendency to weaken. The future research can be carried out in the evolution and differences of paleoclimate in Qinghai Lake, the establishment and perfection of chronology framework, aeolian sand activity process.

Key words: Qinghai Lake, aeolian activity, environmental change, aeolian sediment, Tibetan Plateau

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