Dependence of annual runoff coefficients on basin size and other properties in a climate transition zone from semi-humid to arid and semi-arid on the Loess Plateau, China

doi:10.1016/j.jhydrol.2020.125727

	Dependence of annual runoff coefficients on basin size and other properties in a climate transition zone from semi-humid to arid and semi-arid on the Loess Plateau, China
	Yu, Yipeng 5; Yu, Pengtao 5; Wang, Yanhui 5; Tu, Xinwu 1; Zhang, Xiaoping 3,4; Zhang, Shulan 2; Xu, Lihong 5; Wang, Xiao 5; Liu, Zebin 5; Wang, Bin 5
刊名	JOURNAL OF HYDROLOGY
	2020-12-01
卷号	591 页码:10
关键词	Runoff coefficient Scale dependence Basin The Loess Plateau
ISSN号	0022-1694
DOI	10.1016/j.jhydrol.2020.125727
通讯作者	Yu, Pengtao(yupt@caf.ac.cn)
英文摘要	The dependence of the runoff coefficient (RC) on basin size has been recognized since decades as a big challenge. However, how such region-specific scale effect varies with basin properties still remains poorly understood. This seriously limits the ability of runoff prediction in ungauged watersheds with different environments and the integrated management of watershed under climate change and land use/cover change. In this study, the scaling relationships of annual RC and its variations with basin properties were quantified based on annual precipitation and runoff data series in twenty-five sub-basins belonging to two large basins on the Loess Plateau, Northwest China. The scaling behavior of RC was found to be significant, and the mean annual RC range significantly decreased as basin size increase. And this decrease of mean annual RC was faster in areas with thin loess cover than that in areas with thick loess cover. Area thresholds, beyond which the mean RC was no longer sensitive to basin size change, were observed for the scaling behavior of annual RC and it was approximately 10,000 km(2) in thick loess areas and 25,000 km(2) in thin loess areas. This indicated that the effects of basin properties on RC scaling behavior was related with scales. Soil thickness might be one of the key basin properties that determined the scaling behavior. An exponential regression equation (R-2 = 0.71, p < 0.01) was built for the annual runoff (R) according to the corresponding geomorphic area (a(n)) and annual precipitation (P) for basins with multiple geomorphic types (n). The results imply that the basin properties not only control the form of the scaling relationships of annual RC but also limit its variations under different geomorphic conditions. These findings may help us assess and manage water resources at the basin scale more accurately.
资助项目	National Natural Science Foundation of China[41671025] ; National Natural Science Foundation of China[41230852] ; National Key Research and Development Program of China[2016YFC0501702] ; National Key Research and Development Program of China[2017YFA0604702]
WOS关键词	CATCHMENT ; SCALE ; STREAMFLOW ; VARIABILITY ; EROSION
WOS研究方向	Engineering ; Geology ; Water Resources
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000599757800111
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/137471]
专题	中国科学院地理科学与资源研究所
通讯作者	Yu, Pengtao
作者单位	1.Yellow River Conservancy Commiss Minist Water Res, Hydrol & Water Resources Bur Sanmenxia Reservoir, Sanmenxia 47200, Henan, Peoples R China 2.AuKang Univ, Coll Tourism Resources & Environm, Aukang 725000, Peoples R China 3.Northwest Agr & Forestry Univ, Yangling 712100, Shaanxi, Peoples R China 4.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 5.Chinese Acad Forestry, Res Inst Forest Ecol Environm & Protect, Key Lab Forest Ecol & Environm Natl Forestry, Beijing 100091, Peoples R China
推荐引用方式 GB/T 7714	Yu, Yipeng,Yu, Pengtao,Wang, Yanhui,et al. Dependence of annual runoff coefficients on basin size and other properties in a climate transition zone from semi-humid to arid and semi-arid on the Loess Plateau, China[J]. JOURNAL OF HYDROLOGY,2020,591:10.
APA	Yu, Yipeng.,Yu, Pengtao.,Wang, Yanhui.,Tu, Xinwu.,Zhang, Xiaoping.,...&Wang, Bin.(2020).Dependence of annual runoff coefficients on basin size and other properties in a climate transition zone from semi-humid to arid and semi-arid on the Loess Plateau, China.JOURNAL OF HYDROLOGY,591,10.
MLA	Yu, Yipeng,et al."Dependence of annual runoff coefficients on basin size and other properties in a climate transition zone from semi-humid to arid and semi-arid on the Loess Plateau, China".JOURNAL OF HYDROLOGY 591(2020):10.