Spatiotemporal Evolution of Sandy Land in the Gonghe Basin during the Holocene Period and Its Possible Driving Mechanism

doi:10.7522/j.issn.1000-694X.2013.00315

JOURNAL OF DESERT RESEARCH

2014, Vol. 34

Issue (4): 982-991 DOI: 10.7522/j.issn.1000-694X.2013.00315

Spatiotemporal Evolution of Sandy Land in the Gonghe Basin during the Holocene Period and Its Possible Driving Mechanism

Liu Bing¹, Jin Heling¹, Sun Zhong¹, Su Zhizhu², Zhang Caixia¹

1. Key Laboratory of Desert and Desertification, Cold and Arid Regions Environments and Engineering Research Institute, Chinese Academy of sciences, Lanzhou 730000, China;
2. College of History and Culture, Shanxi University, Taiyuan 030006, China

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Abstract The physical and chemical indicator system of different types of sand dune deposits was reconstructed by analyzing the characteristics of grain size and geochemical elements from the modern fixed, semi-fixed and semi-shifting and mobile sand dunes in Gonghe Basin, northeastern Qinghai-Tibetan plateau, and it is tentatively applied to the study the desert evolution in geological time. In the meanwhile, combined with variation of the sedimentary facies in typical aeolian sand-paleosol profile, we discussed the spatiotemporal changes of the Gonghe Basin sandy land during the Holocene period, and possible driving mechanism. The results indicate the region experiences the several activation, expansion and fixation, reduction. Specifically, the sandy land was dominated by the mobile dune in 11.8～10.0 ka, while frequently change among semi-fixed, semi-shifting and fixed sandy land were discovered in other periods. These characteristics are well comparative with the environmental change in adjacent Qaidam Basin desert and Qinghai lake region. In addition, we found the sandy land environment is very sensitive to the humid condition which is controlled by the winter and summer monsoonal strength. In other words, sandy land evolution in Gonghe Basin during the Holocene is product of climatic change.

Key words: Holocene Gonghe Basin sandy land evolution climatic change

Received: 06 January 2013 Published: 20 July 2014

ZTFLH:

P532

Corresponding Authors: 靳鹤龄（Email：Jinhlster@gmail.com） E-mail: Jinhlster@gmail.com



	Articles by authors
	Liu Bing
	Jin Heling
	Sun Zhong
	Su Zhizhu
	Zhang Caixia

Cite this article:

Liu Bing, Jin Heling, Sun Zhong, Su Zhizhu, Zhang Caixia. Spatiotemporal Evolution of Sandy Land in the Gonghe Basin during the Holocene Period and Its Possible Driving Mechanism. JOURNAL OF DESERT RESEARCH, 2014, 34(4): 982-991.

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http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00315 OR http://www.desert.ac.cn/EN/Y2014/V34/I4/982

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