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The construction of the flow duration curve and the regionalization parameters analysis in the northwest of China
Luan, Jinkai1,2,3; Liu, Dengfeng1; Lin, Mu4; Huang, Qiang1
2021-05-13
Source PublicationJOURNAL OF WATER AND CLIMATE CHANGE
ISSN2040-2244
Pages15
Corresponding AuthorLiu, Dengfeng(liudf@xaut.edu.cn)
AbstractDaily 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.
Keywordclimate distribution function flow duration curve geomorphology log normal model
DOI10.2166/wcc.2021.324
WOS KeywordUNGAUGED SITES ; LOESS PLATEAU ; RIVER-BASIN ; STREAMFLOW ; PREDICTION ; FRAMEWORK ; MODEL ; INDEX ; SIZE
Indexed BySCI
Language英语
Funding ProjectNational 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]
Funding OrganizationNational 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
WOS Research AreaWater Resources
WOS SubjectWater Resources
WOS IDWOS:000651891400001
PublisherIWA PUBLISHING
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/162579
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLiu, Dengfeng
Affiliation1.Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg, Xian 710048, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Cent Univ Finance & Econ, Sch Stat & Math, Beijing 100081, Peoples R China
Recommended Citation
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.
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