干旱区生态环境知识资源中心(Arid): Dune dynamics in the southern edge of Dunhuang Oasis and implications for the oasis protection

Arid

	Dune dynamics in the southern edge of Dunhuang Oasis and implications for the oasis protection
	An Zhishan; Zhang Kecun; Tan Lihai; Zhang Hu; Niu Baicheng
来源期刊	Journal of Mountain Science
ISSN	1672-6316
出版年	2018
卷号	15 期号:10 页码:2172-2181
英文摘要	The survival of Dunhuang Oasis is largely determined by the evolution of sand dunes in the southern edge of the oasis, mainly composed of shield dunes and mega pyramid dunes, which occupy two-thirds and one-third of the area, respectively. However, few studies have focused on dynamics of these dunes, especially in terms of quantification. So the theoretical basis of sand-control engineering is relatively limited. Here we present the characteristics of dune dynamics of a shield dune and mega pyramid dune in the southern edge of Dunhuang Oasis during April 2014-April 2016 based on measurement data of a 3-D laser scanner. Results indicate that the volume of the shield dune decreased during the monitoring period of two years, and the gravity centers of the monitored shield dune moved windward, indicating that sand was transported toward the oasis. Conversely, the dune volume of the mega pyramid dune increased and the gravity center presented no prominent movement, indicating that the mega pyramid dune was relatively stable and its migration toward the oasis was not notable. Thus, compared with mega pyramid dunes, shield dunes in the southern edge of Dunhuang Oasis are identified as a more significant sand source endangering the protection of the oasis, and sand-control engineering should mainly focus on these shield dunes.
英文关键词	Dunhuang Oasis Dune dynamics 3-D laser scanner Shield dune Mega pyramid dune
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:6336172
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336006
作者单位	An Zhishan, Dunhuang Gobi and Desert Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences;;Key Laboratory of Desert and Desertification, Chinese Academy of Sciences, ;;Key Laboratory of Desert and Desertification, Chinese Academy of Sciences, Lanzhou;;Lanzhou, ;; 730000;;730000.; Zhang Kecun, Dunhuang Gobi and Desert Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences;;Key Laboratory of Desert and Desertification, Chinese Academy of Sciences, ;;Key Laboratory of Desert and Desertification, Chinese Academy of Sciences, Lanzhou;;Lanzhou, ;; 730000;;730000.; Tan Lihai, Dunhuang Gobi and Desert Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences;;Key Laboratory of Desert and Desertification, Chinese Academy of Sciences, ;;Key Laboratory of Desert and Desertification, Chinese Academy of Sciences, Lanzhou;;Lanzhou, ;; 730000;;730000.; Niu Baicheng, Dunhuang Gobi and Dese...
推荐引用方式 GB/T 7714	An Zhishan,Zhang Kecun,Tan Lihai,et al. Dune dynamics in the southern edge of Dunhuang Oasis and implications for the oasis protection[J],2018,15(10):2172-2181.
APA	An Zhishan,Zhang Kecun,Tan Lihai,Zhang Hu,&Niu Baicheng.(2018).Dune dynamics in the southern edge of Dunhuang Oasis and implications for the oasis protection.Journal of Mountain Science,15(10),2172-2181.
MLA	An Zhishan,et al."Dune dynamics in the southern edge of Dunhuang Oasis and implications for the oasis protection".Journal of Mountain Science 15.10(2018):2172-2181.