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	Spatial patterns of scale effect on specific sediment yield in the Yangtze River basin
	Yan Y. X. ; Wang S. J. ; Chen J. F.
	2011
关键词	Yangtze River basin Sediment yield Scale effect Spacial pattern Drainage area china catchment delivery erosion flux sea
英文摘要	This paper examines the spatial variation of sediment yield in the Yangtze basin in China, a large basin with complex geology, climate, land-use history, and extensive sediment monitoring. 287 stations with drainage area less than 10,000 km(2) were used to study the scale effects of sediment yield. In order to develop scale relations for regional sediment yield, the whole study area was divided into eight sub-basins. Relation between specific sediment yield and drainage basin area was built for each sub-basin. Regional scaling relation was analyzed based on landforms, geology, lithology and land-use of each sub-basin. Three regional trends were identified in relation to the drainage area: (1) a declining trend, due to soil erosion on heavily cultivated steep land and the storage of sediment in floodplains: (2) a flat trend, due to mass movement on the upper reach and heavy agricultural disturbance on the middle and lower reaches: and (3) an increasing trend, due to downstream recruitment of sediment from land downstream where slope farming and deforestation occurred. Using these developed relations, areally adjusted sediment yield maps were created over the entire Yangtze basin. (C) 2011 Elsevier B.V. All rights reserved.
出处	Geomorphology
卷	130
期	1-2
页	29-39
收录类别	SCI
语种	英语
ISSN号	0169-555X
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/22617]
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	Yan Y. X.,Wang S. J.,Chen J. F.. Spatial patterns of scale effect on specific sediment yield in the Yangtze River basin. 2011.

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