干旱区生态环境知识资源中心(Arid): Migration of barchan dunes and factors that influence migration in the Sanlongsha dune field of the northern Kumtagh Sand Sea, China

Arid

DOI	10.1016/j.geomorph.2021.107615
	Migration of barchan dunes and factors that influence migration in the Sanlongsha dune field of the northern Kumtagh Sand Sea, China
	Yang, Zhuanling; Qian, Guangqiang; Dong, Zhibao; Tian, Min; Lu, Junfeng
通讯作者	Qian, GQ (corresponding author), Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, 322 West Donggang Rd, Lanzhou 730000, Gansu, Peoples R China.
来源期刊	GEOMORPHOLOGY
ISSN	0169-555X
EISSN	1872-695X
出版年	2021
卷号	378
英文摘要	The Sanlongsha dune field, on the northern edge of China's Kumtagh Sand Sea, is a large area with strong winds, causing rapid dune migration and evolution of dune morphology. By combining remote sensing images with field monitoring, we analyzed seasonal and annual migration of the barchan dunes and the factors that influence this migration. Dunes moved fastest in late spring and summer, and slowest in winter and early spring. The annual migration rates ranged between 7 and 95.2 m/yr, and averaged 35.6 m/yr. The migration directions ranged between 186.6 degrees and 210.8 degrees, and averaged 200.8 degrees. Based on the influence of wind intensity and sand dune size. we found: (1) There is a robust linear relationship between the wind intensity (RDP) and dune migration; (2) In the absence of barchan volume, the basal area as indicators of dune scale can better measure the relationship between dune size and dune migration; (3) Barchan migration distance can be predicted based on the basal area covered by the dune, the resultant drift potential during the prediction period, and the regional annual average resultant drift potential (D-i= (RDPi/RDPmean) x alpha BA(beta)). The migration of barchan dunes is also affected by the dune shape, dune density (dune number per unit area), properties of the underlying surface, and topography. This research enhances our understanding of the dynamic mechanisms of sand dune evolution and migration, and provides theoretical guidance for windbreak and sand fixation projects and dynamic monitoring of desertification. (C) 2021 Elsevier B.V. All rights reserved.
英文关键词	Sanlongsha dune field Barchan dunes Dune migration Prediction
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000621211700005
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350410
作者单位	[Yang, Zhuanling] Guizhou Educ Univ, Guizhou Prov Key Lab Geog State Monitoring Waters, Guiyang 550018, Peoples R China; [Qian, Guangqiang; Tian, Min; Lu, Junfeng] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, 322 West Donggang Rd, Lanzhou 730000, Gansu, Peoples R China; [Dong, Zhibao] Shaanxi Normal Univ, Sch Geog & Tourism, Xian 710119, Peoples R China
推荐引用方式 GB/T 7714	Yang, Zhuanling,Qian, Guangqiang,Dong, Zhibao,et al. Migration of barchan dunes and factors that influence migration in the Sanlongsha dune field of the northern Kumtagh Sand Sea, China[J],2021,378.
APA	Yang, Zhuanling,Qian, Guangqiang,Dong, Zhibao,Tian, Min,&Lu, Junfeng.(2021).Migration of barchan dunes and factors that influence migration in the Sanlongsha dune field of the northern Kumtagh Sand Sea, China.GEOMORPHOLOGY,378.
MLA	Yang, Zhuanling,et al."Migration of barchan dunes and factors that influence migration in the Sanlongsha dune field of the northern Kumtagh Sand Sea, China".GEOMORPHOLOGY 378(2021).