Effects of large upstream reservoir operations on cross-sectional changes in the channel of the lower Yellow River reach

doi:10.1016/j.geomorph.2021.107768

	Effects of large upstream reservoir operations on cross-sectional changes in the channel of the lower Yellow River reach
	Liu, Wei 2,3; Wang, Suiji 2,3; Sang, Yan-Fang 2; Ran, Lishan 1; Ma, Yongyong 4
刊名	GEOMORPHOLOGY
	2021-08-15
卷号	387 页码:11
关键词	Runoff Sedimentation Channel cross-section Yellow River
ISSN号	0169-555X
DOI	10.1016/j.geomorph.2021.107768
通讯作者	Wang, Suiji(wangsj@igsnrr.ac.cn)
英文摘要	The lower Yellow River (YR) reach is one of the most typical and complex river channels in the world. The impact of human activities on the evolution of its channels is an important scientific issue that needs to be explored. Based on cross-sectional channel data measured at four typical hydrological stations in the lower YR during the period from 1965 to 2015 and the accompanying annual runoff and sediment data, the variation character-istics of the longitudinal slopes of the riverbeds, the width-depth ratio of the cross-sections, and the lateral mi-gration of thalweg points were analyzed. The river phase coefficients (xi = W-1/2/H) of the YR channel across different years were further evaluated. Furthermore, the correlation relationship between the river phase coeffi-cient, annual discharge, and sediment concentration was established. The results show that over the last five de-cades, the fluctuation of the longitudinal profile of the upper and lower parts of the lower YR was more obvious than that of the middle part, and the variation range of the width of the channel cross sections and the fluctuation of the mainstream line differed in 1965-1973, 1974-1980, 1981-1985, 1986-1999, and 2000-2015. The mor-phological parameters of the channel cross-section (xi) were mainly affected by the annual average discharge and sediment concentration, and a good fitting relationship was found through quantitative analyses. Large reservoirs have the function of redistributing water and sediment yields and reducing peak discharges, thereby leading to changes in the erosion-deposition patterns and river morphologies of channels. (C) 2021 Elsevier B.V. All rights reserved.
资助项目	National Key Research and Development Program of China[2016YFC0402503] ; National Natural Science Foundation of China[41571005] ; National Natural Science Foundation of China[41971004]
WOS关键词	3 GORGES DAM ; YANGTZE-RIVER ; FLUVIAL PROCESSES ; ELWHA RIVER ; DOWNSTREAM ; SEDIMENT ; GEOMORPHOLOGY ; ADJUSTMENTS ; REMOVAL ; IMPACTS
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000660483400001
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/164174]
专题	中国科学院地理科学与资源研究所
通讯作者	Wang, Suiji
作者单位	1.Univ Hong Kong, Dept Geog, Pokfulam Rd, Hong Kong, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 4.Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg China, 5 Jinhua Rd, Xian 710048, Peoples R China
推荐引用方式 GB/T 7714	Liu, Wei,Wang, Suiji,Sang, Yan-Fang,et al. Effects of large upstream reservoir operations on cross-sectional changes in the channel of the lower Yellow River reach[J]. GEOMORPHOLOGY,2021,387:11.
APA	Liu, Wei,Wang, Suiji,Sang, Yan-Fang,Ran, Lishan,&Ma, Yongyong.(2021).Effects of large upstream reservoir operations on cross-sectional changes in the channel of the lower Yellow River reach.GEOMORPHOLOGY,387,11.
MLA	Liu, Wei,et al."Effects of large upstream reservoir operations on cross-sectional changes in the channel of the lower Yellow River reach".GEOMORPHOLOGY 387(2021):11.