干旱区生态环境知识资源中心(Arid): Geomorphologic patterns of dune networks in the Tengger Desert, China

Arid

	Geomorphologic patterns of dune networks in the Tengger Desert, China
	Wen Qing; Dong Zhibao
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2016
卷号	8 期号:5 页码:660-669
英文摘要	Dune networks are widely distributed in the world's deserts, which include primary ridges and secondary ridges. However, they have not been sufficiently studied in a systematic manner and their origins and spatial and morphological characteristics remain unclear. To provide information on the geomorphology of dune networks, we analyze the software geomorphologic patterns of the dune networks in China's Tengger Desert using matrix and laboratory to process remote-sensing images. Based on analysis of image features and their layout in a topographic map, we identify two types of dune networks (square and rectangular dune networks) with different size and morphological structures in the Tengger Desert. Four important geomorphic pattern parameters, ridge length, spacing, orientation and defect density, are analyzed. The length of primary ridges of dune networks decreases from northwest of the desert to the southeast, resulting an increasing spacing and a transition from rectangular dune networks to square dune networks. Wind regime and sediment supply are responsible for the variation in pattern parameters. We use the spacing and defect density data to estimate the construction time of dune networks and found that the dune networks in the Tengger Desert formed since about 1.3 ka BP.
英文关键词	aeolian geomorphology dune networks geomorphological parameters geomorphic pattern analysis Tengger Desert
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	History
CSCD记录号	CSCD:5755832
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335683
作者单位	Wen Qing, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Dong Zhibao, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.
推荐引用方式 GB/T 7714	Wen Qing,Dong Zhibao. Geomorphologic patterns of dune networks in the Tengger Desert, China[J],2016,8(5):660-669.
APA	Wen Qing,&Dong Zhibao.(2016).Geomorphologic patterns of dune networks in the Tengger Desert, China.Journal of Arid Land,8(5),660-669.
MLA	Wen Qing,et al."Geomorphologic patterns of dune networks in the Tengger Desert, China".Journal of Arid Land 8.5(2016):660-669.