干旱区生态环境知识资源中心(Arid): Impact of anthropogenic activities on airflow field variation over a star dune

Arid

DOI	10.1016/j.catena.2020.104877
	Impact of anthropogenic activities on airflow field variation over a star dune
	Liu, Benli; Qu, Jianjun; Niu, Qinghe; An, Zhishan; Tan, Lihai
通讯作者	Liu, BL
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2021
卷号	196
英文摘要	Star dune, the most complex type of single dune ever found, is known to be controlled by several natural factors including wind, topography, and sediment source. Anthropogenic impact of direct disturbance or modification on nearby land surface can also alter its shape and pattern over a longer timescale, but this factor is generally overlooked. Here, we present an integrated study of anthropogenic impact on a well-known star dune in the Mingsha Megadune of Dunhuang, China, by using 3D full-scale numerical simulations and wind tunnel experiments with printed 3D solid models. The removal of the tail of one dune arm affects both the leeward recirculation zone and the budge of dune surface; and an enlarged peripheral green land affects wind speed redistribution and dune body displacement. The wind speed and direction variations were confirmed by field observations. We suggest that anthropogenic impact should be reduced to minimum or used to restore the setting to its previous state, for example, by removing the newly planted trees and rebuilding the dune arm tail, to maintain the natural balance between wind regime and aeolian landform, in order to protect this precious nature heritage from further deformation and degradation.
英文关键词	Star dune Anthropogenic activity Numerical simulation Wind tunnel experiment
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000583955200039
WOS关键词	WIND-TUNNEL ; NUMERICAL-SIMULATION ; DYNAMICS ; TRANSVERSE ; TRANSPORT ; DUNHUANG ; DESERT
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327956
作者单位	[Liu, Benli; Qu, Jianjun; Niu, Qinghe; An, Zhishan; Tan, Lihai] Chinese Acad Sci, Key Lab Desert & Desertificat, Dunhuang Gobi Desert Res Stn, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; [Qu, Jianjun] Ningxia Univ, Breeding Base, State Key Lab Land Degradat & Ecol Restorat North, Yinchuan 750021, Ningxia, Peoples R China
推荐引用方式 GB/T 7714	Liu, Benli,Qu, Jianjun,Niu, Qinghe,et al. Impact of anthropogenic activities on airflow field variation over a star dune[J],2021,196.
APA	Liu, Benli,Qu, Jianjun,Niu, Qinghe,An, Zhishan,&Tan, Lihai.(2021).Impact of anthropogenic activities on airflow field variation over a star dune.CATENA,196.
MLA	Liu, Benli,et al."Impact of anthropogenic activities on airflow field variation over a star dune".CATENA 196(2021).