Key drivers of changes in the sediment loads of Chinese rivers discharging to the oceans

doi:10.1016/j.ijsrc.2020.05.0051001-6279/

	Key drivers of changes in the sediment loads of Chinese rivers discharging to the oceans
	Liu, Cheng 3,4; He, Yun 3; Li, Zhongwu 5; Chen, Jia 2,6; Li, Zhijing 1
刊名	INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH
	2021-12-01
卷号	36 期号:6 页码:747-755
关键词	Sediment load Dam construction Soil and water conservation Catchment disturbance Sand mining Climate change
ISSN号	1001-6279
DOI	10.1016/j.ijsrc.2020.05.0051001-6279/
通讯作者	Liu, Cheng(chliu@iwhr.com)
英文摘要	The magnitude and variation of the sediment loads transported by rivers have important implications for the functioning of river systems and changes in the sediment loads of rivers are driven by numerous factors. In this paper, the key drivers of changes in the sediment loads of the major rivers of China are identified by reviewing recent studies of changes in their sediment loads. Except for the Songhua River, which presents no clear tendency of change in runoff or sediment load, nearly all the major rivers of China are characterized by an apparent decline in annual sediment load. The total annual sediment load of major Chinese rivers transported to the coast decreased from 2.03 billion t/yr during the period 1955 -1968 to 0.50 billion t/yr during the period 1997-2010. The primary drivers of changes in the sediment loads of the rivers are dam construction, implementation of soil and water conservation measures, catchment disturbance, agricultural practices, sand mining and climate change. Examples drawn from Chinese rivers are used to demonstrate the importance of these drivers. Construction of a large number of reservoirs in the Yangtze River basin represents the primary driver for the reduced sediment load of the Yangtze River. The implementation of soil and water conservation programmes is one of the key drivers for the sharp decline in the sediment load of the Yellow River. Catchment disturbance explains why the reduction of the sediment load of the Lancang-Mekong River at the Chiang Saen gauging station was much less than that at the Gajiu gauging station upstream. A reduction in sediment load resulting from the expansion of agricultural production may be the main driver for the reduced sediment load of the Huaihe River. The decrease in the sediment load of the Pearl River has been influenced by sand mining activities. Climate change is one of the key drivers responsible for the greatly reduced sediment load of the rivers in the Haihe River Basin. (c) 2020 International Research and Training Centre on Erosion and Sedimentation/the World Association for Sedimentation and Erosion Research. Published by Elsevier B.V. All rights reserved.
资助项目	National Key Research and Development Program of China[2017YFC0505400] ; Inter-national Science & Technology Cooperation Program of China[2014DFG72010]
WOS关键词	YELLOW-RIVER ; CLIMATE-CHANGE ; SOIL-EROSION ; RUNOFF ; PERIOD ; DECREASE ; YANGTZE ; IMPACTS ; MEKONG ; FLUX
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
语种	英语
出版者	IRTCES
WOS记录号	WOS:000692555800006
资助机构	National Key Research and Development Program of China ; Inter-national Science & Technology Cooperation Program of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/165352]
专题	中国科学院地理科学与资源研究所
通讯作者	Liu, Cheng
作者单位	1.Changjiang River Sci Res Inst, Wuhan 430010, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.China Inst Water Resources & Hydropower Res, Beijing 100038, Peoples R China 4.Int Res & Training Ctr Eros & Sedimentat, Beijing 100048, Peoples R China 5.Hunan Normal Univ, Coll Resources & Environm Sci, Changsha 410081, Peoples R China 6.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Liu, Cheng,He, Yun,Li, Zhongwu,et al. Key drivers of changes in the sediment loads of Chinese rivers discharging to the oceans[J]. INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH,2021,36(6):747-755.
APA	Liu, Cheng,He, Yun,Li, Zhongwu,Chen, Jia,&Li, Zhijing.(2021).Key drivers of changes in the sediment loads of Chinese rivers discharging to the oceans.INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH,36(6),747-755.
MLA	Liu, Cheng,et al."Key drivers of changes in the sediment loads of Chinese rivers discharging to the oceans".INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH 36.6(2021):747-755.