干旱区生态环境知识资源中心(Arid): 敦煌月牙泉景区沙丘表面沙物质的粒度特征

Arid

	敦煌月牙泉景区沙丘表面沙物质的粒度特征
其他题名	Grain Size Characters of Dune Surface Sediment in the Crescent Spring Scenic Spot,Dunhuang
	庞营军 1; 屈建军2 ; 牛清河 2; 张克存 2; 谢胜波 2; 安志山 2
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2017
卷号	34 期号:3 页码:701-706
中文摘要	结合风况和蚀积监测数据,系统分析月牙泉南侧线性沙丘、北侧金字塔沙丘表面沙物质粒度特征及其环境指示意义。结果表明: ①线性沙丘SW坡面以风蚀为主,NE坡面以风积为主,由此导致NE坡面表面沙物质较SW坡面细、分选性好。②月牙泉北侧金字塔沙丘SW坡面以风蚀作用为主,沙物质粒径最粗,分选最差。NW坡面也是主要的风蚀面,但由于靠近绿洲防护林,底部以风积为主。E坡面以风积作用为主,沙物质粒径最细、分选最好。 ③从风场、粒度和蚀积变化监测结果来看,对月牙泉危害最大的是南侧线性沙丘NE坡面的积沙。金字塔沙丘SW坡面中部的持续积沙也会对月牙泉构成潜在的威胁。因此,为了更好的保护月牙泉这一自然奇观,应该加强景区周边环境监测与管理。
英文摘要	In this study, the grain size characters of pyramid dune at the north and linear dune at the south of Crescent Spring and their environmental significance were analyzed based on the monitoring data of wind regime, wind erosion and deposition. The results are as follows: ① The wind erosion occurred mainly on the SW slope of linear dune,and wind deposition occurred mainly on the NE slope,which caused the sand sediment of surface of SW slope to be fine and sorted well; ② The SW slope of pyramid dune at the north of the Crescent Spring was mainly erosional,and sand sediment was the coarsest and sorted poorly. NW slope was also erosional,while the bottom of slope was depositional due to the proximity of windbreak in oasis; ③ The data of wind regime,grain size and variation of deposition and erosion showed that sand deposition on the NW slope at the south of the Crescent Spring was the most harmful. The continuous sand accumulation in the middle part of pyramid dune on the SW slope at the north of the Crescent Spring would pose a potential threat to the Crescent Spring. Therefore, it is necessary to strengthen the environmental monitoring and management of scenic spots so as to protect the natural wonders of Crescent Spring.
中文关键词	金字塔沙丘 ; 沙物质 ; 风况 ; 蚀积 ; 粒度 ; 月牙泉 ; 敦煌
英文关键词	pyramid dune sand sediment wind regime erosion and deposition grain size Crescent Spring Dunhuang
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:5990127
来源机构	中国科学院西北生态环境资源研究院 ; 中国林业科学研究院荒漠化研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235994
作者单位	1.中国林业科学研究院荒漠化研究所, 北京 100091, 中国; 2.中国科学院寒区旱区环境与工程研究所,敦煌戈壁荒漠生态与环境研究站, 中国科学院沙漠与沙漠化重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	庞营军,屈建军,牛清河,等. 敦煌月牙泉景区沙丘表面沙物质的粒度特征[J]. 中国科学院西北生态环境资源研究院, 中国林业科学研究院荒漠化研究所,2017,34(3):701-706.
APA	庞营军,屈建军,牛清河,张克存,谢胜波,&安志山.(2017).敦煌月牙泉景区沙丘表面沙物质的粒度特征.干旱区研究,34(3),701-706.
MLA	庞营军,et al."敦煌月牙泉景区沙丘表面沙物质的粒度特征".干旱区研究 34.3(2017):701-706.