干旱区生态环境知识资源中心(Arid): Formation of parabolic dunes on the shore of Poyang Lake in East China

Arid

DOI	10.1016/j.geomorph.2021.108023
	Formation of parabolic dunes on the shore of Poyang Lake in East China
	Han, Zhiyong; Ren, Yicheng; Li, Xusheng; Liu, Yujia; Xu, Weimin; Li, Yufang; Pan, Rouxian
通讯作者	Li, XS (corresponding author), Nanjing Univ, Sch Geog & Ocean Sci, Nanjing 210093, Peoples R China.
来源期刊	GEOMORPHOLOGY
ISSN	0169-555X
EISSN	1872-695X
出版年	2022
卷号	397
英文摘要	Parabolic dunes can transform from and into other types of dunes in response to environmental changes. The sand hills, including some parabolic dunes, on the shore of Poyang Lake mainly accumulated during the Last Glaciation and are rare inland aeolian landforms in the humid monsoon climate zone in East China. However, the characteristics, distribution and formation of the parabolic dunes in this region are still not clear. Three sand hills with similar scales and wind regimes at Shaling, Jishan and Songmenshan were selected as the research targets. Integrating topographical, hydrological, vegetation and wind data, we found that the development of the parabolic dunes was effectively controlled by both the vegetation cover of the sand hills and the space available downwind of the sand hills. No parabolic dunes were found at Songmenshan and Shaling; the former has too little vegetation cover, favouring the formation of blowouts, and the latter lacks available space since Shaling is surrounded by villages and farmlands. Three types of parabolic dunes that developed sequentially in the downwind direction, namely, type A, type B and type C dunes, are observed at Jishan, and their formation is related to a narrowly unimodal and high-energy wind regime. Different from existing models, type A dunes are found to originate from the wedge-shaped depositional lobes of trough blowouts; type B dunes transform from type A dunes after migration; and type C dunes develop from very low sand drifts. Composite parabolic dunes are formed when the sand supply is plentiful, while simple parabolic dunes appear when the sand supply is limited. The formation of the parabolic dunes occurred approximately 250 years ago, which is close to the documented time when the sand hills were reactivated due to the vegetation being anthropogenically damaged. Therefore, anthropogenic destruction of vegetation is a trigger for producing parabolic dunes in this humid area. This study may shed light on the evolution of aeolian landforms in humid monsoon climate zones. (c) 2021 Published by Elsevier B.V.
英文关键词	Parabolic dune Formation model Morphometric measurement Anthropogenic impact Poyang Lake
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000718569100005
WOS关键词	CLIMATIC CHANGES ; SAND HILLS ; PREDICTION ; EVOLUTION ; BARCHAN ; DESERT
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/2XILL650/374495
作者单位	[Han, Zhiyong; Ren, Yicheng; Li, Xusheng; Liu, Yujia; Li, Yufang; Pan, Rouxian] Nanjing Univ, Sch Geog & Ocean Sci, Nanjing 210093, Peoples R China; [Xu, Weimin] Meteorol Sci Inst Jiangxi Prov, Nanchang 330096, Jiangxi, Peoples R China
推荐引用方式 GB/T 7714	Han, Zhiyong,Ren, Yicheng,Li, Xusheng,et al. Formation of parabolic dunes on the shore of Poyang Lake in East China[J],2022,397.
APA	Han, Zhiyong.,Ren, Yicheng.,Li, Xusheng.,Liu, Yujia.,Xu, Weimin.,...&Pan, Rouxian.(2022).Formation of parabolic dunes on the shore of Poyang Lake in East China.GEOMORPHOLOGY,397.
MLA	Han, Zhiyong,et al."Formation of parabolic dunes on the shore of Poyang Lake in East China".GEOMORPHOLOGY 397(2022).