The construction of the flow duration curve and the regionalization parameters analysis in the northwest of China

doi:10.2166/wcc.2021.324

	The construction of the flow duration curve and the regionalization parameters analysis in the northwest of China
	Luan, Jinkai 1,2,3; Liu, Dengfeng 3; Lin, Mu 4; Huang, Qiang 3
刊名	JOURNAL OF WATER AND CLIMATE CHANGE
	2021-05-13
页码	15
关键词	climate distribution function flow duration curve geomorphology log normal model
ISSN号	2040-2244
DOI	10.2166/wcc.2021.324
通讯作者	Liu, Dengfeng(liudf@xaut.edu.cn)
英文摘要	Daily runoff is the data to estimate the water resources in a river. In many catchments, the daily discharge is not well observed. Flow duration curve is an important characteristic of daily runoff, and important for the design of water conservancy projects. In the ungauged catchments, the evaluation of distribution functions and the parameters of flow duration curve is a helpful method to understand the characteristics of the flow. This study uses the data at 19 hydrological stations to evaluate the applicability of 11 distribution functions to simulate flow duration curves in the northwest of China. The fitted flow duration curves are evaluated by Nash-Sutcliffe efficiency, the root mean square relative error and the coefficient of determination. The evaluation shows that, among the 11 distribution functions, the log normal model is the most suitable model to construct flow duration curves of 19 hydrological stations. Based on a multivariate linear regression model, a regional model of distribution parameters is constructed, that are functions of watershed geomorphologic and climatic characteristics. The analysis of Baijiachuan hydrological station shows that, the parameter a, and b, showed a decreasing trend. This study presents an innovative approach to evaluate regionalized parameters of flow duration curves considering the impacts of geomorphologic and climatic characteristics.
资助项目	National Natural Science Foundation of China (NSFC)[51779203] ; National Natural Science Foundation of China (NSFC)[51609270] ; National Natural Science Foundation of China (NSFC)[51939009] ; Basic Research Plan of Natural Science of Shaanxi Province[2016JQ5105] ; Planning project of science and technology of water resources of Shaanxi[2014slkj-04]
WOS关键词	UNGAUGED SITES ; LOESS PLATEAU ; RIVER-BASIN ; STREAMFLOW ; PREDICTION ; FRAMEWORK ; MODEL ; INDEX ; SIZE
WOS研究方向	Water Resources
语种	英语
出版者	IWA PUBLISHING
WOS记录号	WOS:000651891400001
资助机构	National Natural Science Foundation of China (NSFC) ; Basic Research Plan of Natural Science of Shaanxi Province ; Planning project of science and technology of water resources of Shaanxi
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/162578]
专题	中国科学院地理科学与资源研究所
通讯作者	Liu, Dengfeng
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg, Xian 710048, Peoples R China 4.Cent Univ Finance & Econ, Sch Stat & Math, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Luan, Jinkai,Liu, Dengfeng,Lin, Mu,et al. The construction of the flow duration curve and the regionalization parameters analysis in the northwest of China[J]. JOURNAL OF WATER AND CLIMATE CHANGE,2021:15.
APA	Luan, Jinkai,Liu, Dengfeng,Lin, Mu,&Huang, Qiang.(2021).The construction of the flow duration curve and the regionalization parameters analysis in the northwest of China.JOURNAL OF WATER AND CLIMATE CHANGE,15.
MLA	Luan, Jinkai,et al."The construction of the flow duration curve and the regionalization parameters analysis in the northwest of China".JOURNAL OF WATER AND CLIMATE CHANGE (2021):15.