Variations in runoff, sediment load, and their relationship for a major sediment source area of the Jialing River basin, southern China

doi:10.1002/hyp.14297

	Variations in runoff, sediment load, and their relationship for a major sediment source area of the Jialing River basin, southern China
	Shao, Yiting 2,4; Mu, Xingmin 3,4; He, Yi 1; Chen, Kai 5
刊名	HYDROLOGICAL PROCESSES
	2021-07-01
卷号	35 期号:7 页码:16
关键词	multi-temporal scales runoff runoff-sediment relationship sediment load sediment source area Xihanshui catchment
ISSN号	0885-6087
DOI	10.1002/hyp.14297
通讯作者	Mu, Xingmin(xmmu@ms.iswc.ac.cn)
英文摘要	Investigation of the variations in runoff, sediment load, and their dynamic relation is conducive to understanding hydrological regime changes and supporting channel regulation and fluvial management. This study is undertaken in the Xihanshui catchment, which is known for its high sediment-laden in the Jialing River of the Yangtze River basin, southern China, to evaluate the change characteristics of runoff, sediment load, and their relationship at multi-temporal scales from 1966 to 2016. The results showed that runoff changed significantly for more months, whereas the significant changes in monthly sediment load occurred from April to September. The contributions of runoff in summer and autumn and sediment load in summer to their annual value changes were greater. Annual runoff and sediment load in the Xihanshui catchment both exhibited significant decreasing trends (p < 0.05) with a significant mutation in 1993 (p < 0.05). The average annual runoff in the change period (1994-2016) decreased by 49.58% and annual sediment load displayed a substantial decline with a reduction of 77.77% in comparison with the reference period (1966-1993) due to climate change and intensive human activity. The power functions were satisfactory to describe annual and extreme monthly runoff-sediment relationships, whereas the monthly runoff-sediment relationship and extreme monthly sediment-runoff relationship were changeable. Spatially, annual runoff-sediment relationship alteration could be partly attributed to sediment load changes in the upstream area and runoff variations in the downstream region. Three quantitative methods revealed that the main driver for significant reductions of annual runoff and sediment load is the human activity dominated by soil and water conservation measures, while climate change only contributed 22.73%-38.99% (mean 32.07%) to the total runoff reduction and 3.39%-35.56% (mean 17.32%) to the total decrease in sediment load.
资助项目	National Science and Technology Basic Resource Investigation Program[2017FY100904]
WOS关键词	SUSPENDED-SEDIMENT ; YELLOW-RIVER ; CLIMATE-CHANGE ; PRECIPITATION EXTREMES ; ANNUAL STREAMFLOW ; MIDDLE REACHES ; SOIL-EROSION ; DISCHARGE ; TRENDS ; VARIABILITY
WOS研究方向	Water Resources
语种	英语
出版者	WILEY
WOS记录号	WOS:000678409000025
资助机构	National Science and Technology Basic Resource Investigation Program
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/164625]
专题	中国科学院地理科学与资源研究所
通讯作者	Mu, Xingmin
作者单位	1.Northwest Univ, Coll Urban & Environm Sci, Shaanxi Key Lab Earth Surface Syst & Environm Car, Xian, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China 4.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Xinong Rd 26, Yangling 712100, Shaanxi, Peoples R China 5.Longnan Hydrol & Water Resources Survey Bur Gansu, Chengxian, Peoples R China
推荐引用方式 GB/T 7714	Shao, Yiting,Mu, Xingmin,He, Yi,et al. Variations in runoff, sediment load, and their relationship for a major sediment source area of the Jialing River basin, southern China[J]. HYDROLOGICAL PROCESSES,2021,35(7):16.
APA	Shao, Yiting,Mu, Xingmin,He, Yi,&Chen, Kai.(2021).Variations in runoff, sediment load, and their relationship for a major sediment source area of the Jialing River basin, southern China.HYDROLOGICAL PROCESSES,35(7),16.
MLA	Shao, Yiting,et al."Variations in runoff, sediment load, and their relationship for a major sediment source area of the Jialing River basin, southern China".HYDROLOGICAL PROCESSES 35.7(2021):16.