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	Suspended sediment balance for the mainstem of Changjiang (Yangtze River) in the period 1964-1985
	Hassan M. A. ; Church M. ; Yan Y. X. ; Slaymaker O. ; Xu J. X.
	2011
关键词	Suspended sediment fluvial sediment balance Yangtze River sediment exchange channel morphology reach sediment balance east china sea worlds rivers transport yield flux yorkshire erosion impact uk deposition
英文摘要	Suspended sediment dynamics during the period 1964-1985 are examined along the mainstem of Changjiang (Yangtze River). The period represents a basin condition prior to major changes in land management policy and dam building on the river's mainstem. The downstream sediment dynamics reflect basin geology and topography and channel morphology. Sediment exchange within the mainstem was calculated by the development of reach sediment balances that reveal complex temporal and spatial patterns. There is relatively little sediment exchange in the upper, bedrock-controlled reaches, with systematic increases in the downstream alluvial reaches. Degrading, transfer, and aggrading reaches were identified. Relations between input and output in all reaches were significant but no relation was found between sediment exchange and input/output. Comparison between 'short-term' (22 years) and 'long-term' (52 years) records demonstrates the importance of the record length in studying the suspended sediment dynamics in a large fluvial system. The longer record yielded better correlation and different trends than the shorter record. Sediment transfer (output/input ratio) changes downstream: the dominance of the upstream contributing area in sustaining the appearance of net degradation through most of the river system highlights the importance of reach length on characterisation of suspended sediment dynamics in large fluvial systems. Copyright (C) 2011 John Wiley & Sons, Ltd.
出处	Hydrological Processes
卷	25
期	15
页	2339-2353
收录类别	SCI
语种	英语
ISSN号	0885-6087
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/23884]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Hassan M. A.,Church M.,Yan Y. X.,et al. Suspended sediment balance for the mainstem of Changjiang (Yangtze River) in the period 1964-1985. 2011.

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