IGSNRR OpenIR
Investigation and simulations of changes in the relationship of precipitation-runoff in drought years
Tian, Wei1,2; Liu, Xiaomang1; Liu, Changming1; Bai, Peng1
2018-10-01
Source PublicationJOURNAL OF HYDROLOGY
ISSN0022-1694
Volume565Pages:95-105
Corresponding AuthorLiu, Xiaomang()
AbstractThe frequency and intensity of drought could be increasing with global warming. When drought occurs, the runoff generation process and the precipitation-runoff relationship might change. In this study, the precipitation runoff relationship in drought years was systematically investigated in the largest freshwater lake basin of China, namely, the Poyang Lake Basin. The results showed that the precipitation-runoff relationship changed significantly (p < 0.05) in drought years. The annual runoff coefficient in drought years decreased by 24.1% compared with that in non-drought years. The decreased magnitude of runoff coefficient had a significant positive relationship (p < 0.01) with the drought severity, i.e., the standardized precipitation index of the year. Two hydrological models calibrated by the objective function Nash-Sutcliffe efficiency significantly overestimated runoff in drought years. Three additional objective functions that are sensitive to low flow simulations significantly improved the accuracy of runoff simulation in drought years. Therefore, we recommend that the selected objective functions for runoff simulation in drought years should be sensitive to low flow simulations. Otherwise, the water resources availability will be overestimated in drought years.
KeywordDrought Precipitation-runoff relationship Hydrological model Objective function
DOI10.1016/j.jhydrol.2018.08.015
WOS KeywordWATER-BALANCE MODELS ; HYDROLOGICAL MODELS ; CLIMATE-CHANGE ; LOESS PLATEAU ; RIVER-BASIN ; REGIONAL CALIBRATION ; HYDROCLIMATIC CHANGE ; GLOBAL OPTIMIZATION ; NON-STATIONARITY ; LAKE CATCHMENT
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41330529] ; National Natural Science Foundation of China[41571024]
Funding OrganizationNational Natural Science Foundation of China
WOS Research AreaEngineering ; Geology ; Water Resources
WOS SubjectEngineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS IDWOS:000447477200009
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/52671
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLiu, Xiaomang
Affiliation1.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, Peoples R China
Recommended Citation
GB/T 7714
Tian, Wei,Liu, Xiaomang,Liu, Changming,et al. Investigation and simulations of changes in the relationship of precipitation-runoff in drought years[J]. JOURNAL OF HYDROLOGY,2018,565:95-105.
APA Tian, Wei,Liu, Xiaomang,Liu, Changming,&Bai, Peng.(2018).Investigation and simulations of changes in the relationship of precipitation-runoff in drought years.JOURNAL OF HYDROLOGY,565,95-105.
MLA Tian, Wei,et al."Investigation and simulations of changes in the relationship of precipitation-runoff in drought years".JOURNAL OF HYDROLOGY 565(2018):95-105.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Tian, Wei]'s Articles
[Liu, Xiaomang]'s Articles
[Liu, Changming]'s Articles
Baidu academic
Similar articles in Baidu academic
[Tian, Wei]'s Articles
[Liu, Xiaomang]'s Articles
[Liu, Changming]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Tian, Wei]'s Articles
[Liu, Xiaomang]'s Articles
[Liu, Changming]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.