干旱区生态环境知识资源中心(Arid): Impacts of flow regulation on geomorphic adjustment and riparian vegetation succession along an anabranching reach of the Upper Yellow River

Arid

DOI	10.1016/j.catena.2020.104561
	Impacts of flow regulation on geomorphic adjustment and riparian vegetation succession along an anabranching reach of the Upper Yellow River
	Han, Meiqin; Brierley, Gary; Li, Bing; Li, Zhiwei; Li, Xilai
通讯作者	Han, MQ
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2020
卷号	190
英文摘要	Closure of Longyangxia Dam in 1986, the uppermost large dam along the trunk stream of the Upper Yellow River in western China, permanently altered the flow regime in Guide reach, an anabranching section of river located 41 km downstream of the dam. Two smaller hydropower structures, Nina and Laxiwa Dams, were constructed between Longyangxia Dam and Guide in 2003 and 2009 respectively, but they had a minor influence on the flow regime. This study uses the Indicators of Hydrologic Alteration model, satellite imagery and field analyses to assess how the magnitude and duration of changes to the flow regime impacted upon geomorphic adjustments and riparian vegetation succession from 1987 to 2015. Flow impoundment resulted in near instantaneous reduction in the width of the active channel zone. Human activities have manipulated the additional floodplain areas created by these changes. Aggregation of mid-channel bars into larger compound features decreased channel multiplicity. Negligible bed incision likely reflects local supply of sediment from tributary sources downstream of the dam. Significant correlations are shown between changes to the balance between channel depositional and erosional processes induced by flow regulation and the functional composition of vegetation succession patterns. Maintenance of a higher water table for longer periods of time is inferred to have altered mutual interactions between hydrogeomorphic processes and riparian vegetation in this semi-arid setting.
英文关键词	Anabranching river Channel adjustment Dam impact Riparian vegetation Longyangxia Dam Upper Yellow River
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000525324600040
WOS关键词	CHANNEL MORPHOLOGY ; FLUVIAL LANDFORMS ; CLIMATE-CHANGE ; LARGE DAMS ; DYNAMICS ; BASIN ; ANTHROPOCENE ; VARIABILITY ; DOWNSTREAM ; CATCHMENT
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/2XILL650/324335
作者单位	[Han, Meiqin; Brierley, Gary; Li, Bing] Univ Auckland, Sch Environm, Auckland 1010, New Zealand; [Li, Zhiwei] Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Peoples R China; [Li, Xilai] Qinghai Univ, Fac Agr & Anim Husb, Xining 810000, Peoples R China
推荐引用方式 GB/T 7714	Han, Meiqin,Brierley, Gary,Li, Bing,et al. Impacts of flow regulation on geomorphic adjustment and riparian vegetation succession along an anabranching reach of the Upper Yellow River[J],2020,190.
APA	Han, Meiqin,Brierley, Gary,Li, Bing,Li, Zhiwei,&Li, Xilai.(2020).Impacts of flow regulation on geomorphic adjustment and riparian vegetation succession along an anabranching reach of the Upper Yellow River.CATENA,190.
MLA	Han, Meiqin,et al."Impacts of flow regulation on geomorphic adjustment and riparian vegetation succession along an anabranching reach of the Upper Yellow River".CATENA 190(2020).