干旱区生态环境知识资源中心(Arid): Morphological variation of star dune and implications for dune management: a case study at the Crescent Moon Spring scenic spot of Dunhuang, China

Arid

DOI	10.1007/s40333-019-0099-1
	Morphological variation of star dune and implications for dune management: a case study at the Crescent Moon Spring scenic spot of Dunhuang, China
	Zhang, Weimin; Tan, Lihai; An, Zhishan; Zhang, Kecun; Gao, Yang; Niu, Qinghe
通讯作者	Zhang, Weimin
来源期刊	JOURNAL OF ARID LAND
ISSN	1674-6767
EISSN	2194-7783
出版年	2019
卷号	11 期号:3 页码:357-370
英文摘要	Aerial photographs and 3-D laser scans of a 90-m high star dune at the Crescent Moon Spring scenic spot in Dunhuang, China, are used to investigate the changes in dune morphology on timescales from months to decades. The result revealed that relative-equilibrium airflow strength in three wind directions of northeast, west and south was an important condition for the stability of star dunes with limited migration. Transverse and longitudinal airflows exerted a crucial impact on variation processes of star dune morphology. Controlled by transverse airflows, the easterly winds, the east side was dominated by wind erosion; and strong deposition occurred on the south-south-east arm with a maximum deposition rate of 0.44 m/a in the 46-a monitoring period, causing the east side becoming steep and high. Controlled by longitudinal airflows, the westerly winds, the west-north-west side was mainly eroded and the north arm migrated from west to east with a rate of 0.30 m/a, causing the dune slope becoming gentle and elongate. The local air circulation (southerly winds) exerted a significant impact on the development process of the star dune. Due to the influence of human activities, the south side present surface processes from a concave profile to a convex profile in 46 a, which is a potential threat to the Crescent Moon Spring. The results indicate that rehabilitating the airflow field at most is a crucial strategy to the protection of Crescent Moon Spring from burial. Opening up the passage of easterly, westerly and southerly winds through intermediately cutting the protection forest, demolishing the enclosed wall and changing the pavilion into a porous pattern have been suggested to protect the Crescent Moon Spring from burial.
英文关键词	star dune morphology variation erosion and deposition time scale Crescent Moon Spring
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000474563200004
WOS关键词	DYNAMIC CHARACTERISTICS ; FIELD ; MIGRATION ; DESERT ; WIND ; FLOW
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	Arizona State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216790
作者单位	Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Dunhuang Gobi Desert Res Stn, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Weimin,Tan, Lihai,An, Zhishan,et al. Morphological variation of star dune and implications for dune management: a case study at the Crescent Moon Spring scenic spot of Dunhuang, China[J]. Arizona State University,2019,11(3):357-370.
APA	Zhang, Weimin,Tan, Lihai,An, Zhishan,Zhang, Kecun,Gao, Yang,&Niu, Qinghe.(2019).Morphological variation of star dune and implications for dune management: a case study at the Crescent Moon Spring scenic spot of Dunhuang, China.JOURNAL OF ARID LAND,11(3),357-370.
MLA	Zhang, Weimin,et al."Morphological variation of star dune and implications for dune management: a case study at the Crescent Moon Spring scenic spot of Dunhuang, China".JOURNAL OF ARID LAND 11.3(2019):357-370.