干旱区生态环境知识资源中心(Arid): Modern eolian and fluvial processes and their interactions in an ephemeral desert stream in Inner Mongolia, China

Arid

DOI	10.1007/s11368-019-02452-x
	Modern eolian and fluvial processes and their interactions in an ephemeral desert stream in Inner Mongolia, China
	Du, Heqiang 1,2,3; Wang, Tao1,2 ; Xue, Xian 1,2; Li, Sen 1,2
通讯作者	Du, Heqiang
来源期刊	JOURNAL OF SOILS AND SEDIMENTS
ISSN	1439-0108
EISSN	1614-7480
出版年	2020
卷号	20 期号:2 页码:1140-1156
英文摘要	Purpose Floods and eolian activities are the dominant external agents to shape the topographic forms in ephemeral desert streams of drylands. So far, few studies have discussed the modern processes of eolian-fluvial interactions. To bridge this gap, we studied the modern interactions of eolian and fluvial process in a desert ephemeral river, the Maobula Gully in Inner Mongolia, which exhibits typical eolian-fluvial interactions. Materials and methods Multisource data such as integrated particle size data, hydrological data from the Tugerige Hydrological Station, high-spatial-resolution satellite images, and an eolian sediment saltation emission model were integrated to analyze the effects of eolian and fluvial delivery to the sediment on the riverbed, the eolian sediment feeding rate to the gully, the transport of sediment in flood events, and the interactions between eolian and fluvial processes. Results and discussion The desert reach of the Maobula Gully is a replacement reach between coarse sediment from the upper reaches and eolian sediment from the Kubuqi Desert. The annual eolian sediment feeding into the gully exhibited a significant decreasing trend. The eolian sediment into the gully increases the available sediment and the bed roughness, affecting the transport of sediment during floods. The sediment concentration and yields in flood events are mainly decided by the discharge and water yield, respectively. Through a comparison of the channel forms between 1970 and 2013, a recovery mechanism in the Maobula Gully was identified, which involves the equilibrium state between abrupt flood erosion and continuous dune migration. Conclusions This study analyzed the modern processes of eolian and fluvial processes and their interactions in a typical ephemeral desert stream named the Maobula Gully, and some interesting results were found. We believe that the methodology and results could provide references and evidence for understanding the mechanisms of fluvial and eolian interactions in other ephemeral desert streams around the world.
英文关键词	Eolian and fluvial processes Ephemeral desert stream Recovery mechanism Sediment replacement
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000513281900050
WOS关键词	HYPER-CONCENTRATED FLOW ; PARKS CENTRAL SYSTEM ; WIND-EROSION RISK ; DOWNSTREAM CHANGES ; HOLOCENE HISTORY ; SOIL-MOISTURE ; YELLOW-RIVER ; SEDIMENTS ; REACH ; SAND
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315076
作者单位	1.Chinese Acad Sciences, Key Lab Desert, Desertificat, Lanzhou, Peoples R China; 2.NW Inst EcoEnvironm, Chinese Acad Sciences, Resources, Lanzhou, Peoples R China; 3.NW Inst EcoEnvironm, Chinese Acad Sciences,Grassland Res Stn, Urat Desert,Resources, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Du, Heqiang,Wang, Tao,Xue, Xian,et al. Modern eolian and fluvial processes and their interactions in an ephemeral desert stream in Inner Mongolia, China[J],2020,20(2):1140-1156.
APA	Du, Heqiang,Wang, Tao,Xue, Xian,&Li, Sen.(2020).Modern eolian and fluvial processes and their interactions in an ephemeral desert stream in Inner Mongolia, China.JOURNAL OF SOILS AND SEDIMENTS,20(2),1140-1156.
MLA	Du, Heqiang,et al."Modern eolian and fluvial processes and their interactions in an ephemeral desert stream in Inner Mongolia, China".JOURNAL OF SOILS AND SEDIMENTS 20.2(2020):1140-1156.