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The best alternative for estimating reference crop evapotranspiration in different sub-regions of mainland China
Peng, Lingling1,2; Li, Yi1,2; Feng, Hao2,3
2017-07-14
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume7Pages:19
Corresponding AuthorLi, Yi(liyikitty@126.com)
AbstractReference crop evapotranspiration (ETo) is a critically important parameter for climatological, hydrological and agricultural management. The FAO56 Penman-Monteith (PM) equation has been recommended as the standardized ETo (ETo,s) equation, but it has a high requirements of climatic data. There is a practical need for finding a best alternative method to estimate ETo in the regions where full climatic data are lacking. A comprehensive comparison for the spatiotemporal variations, relative errors, standard deviations and Nash-Sutcliffe efficacy coefficients of monthly or annual ETo, s and ETo,i (i = 1, 2,., 10) values estimated by 10 selected methods (i.e., Irmak et al., Makkink, PriestleyTaylor, Hargreaves-Samani, Droogers-Allen, Berti et al., Doorenbos-Pruitt, Wright and Valiantzas, respectively) using data at 552 sites over 1961-2013 in mainland China. The method proposed by Berti et al. (2014) was selected as the best alternative of FAO56-PM because it was simple in computation process, only utilized temperature data, had generally good accuracy in describing spatiotemporal characteristics of ETo, s in different sub-regions and mainland China, and correlated linearly to the FAO56-PM method very well. The parameters of the linear correlations between ETo of the two methods are calibrated for each site with the smallest determination of coefficient being 0.87.
DOI10.1038/s41598-017-05660-y
WOS KeywordMODELING REFERENCE EVAPOTRANSPIRATION ; FAO PENMAN-MONTEITH ; PAN EVAPORATION ; POTENTIAL EVAPOTRANSPIRATION ; CLIMATE-CHANGE ; RIVER-BASIN ; PRIESTLEY-TAYLOR ; WEATHER DATA ; TRENDS ; EQUATIONS
Indexed BySCI
Language英语
Funding ProjectNational 863 Plan Project of China[2013AA102904] ; Hydraulic ScienTec Project in Shaanxi Province[2016slkj-17] ; China 111 project
Funding OrganizationNational 863 Plan Project of China ; Hydraulic ScienTec Project in Shaanxi Province ; China 111 project
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000405464200095
PublisherNATURE PUBLISHING GROUP
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/61516
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLi, Yi
Affiliation1.Northwest A&F Univ, Coll Water Resources & Architecture Engn, Yangling 712100, Peoples R China
2.Northwest A&F Univ, Inst Water Saving Agr Arid Areas China, Yangling 712100, Peoples R China
3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Peoples R China
Recommended Citation
GB/T 7714
Peng, Lingling,Li, Yi,Feng, Hao. The best alternative for estimating reference crop evapotranspiration in different sub-regions of mainland China[J]. SCIENTIFIC REPORTS,2017,7:19.
APA Peng, Lingling,Li, Yi,&Feng, Hao.(2017).The best alternative for estimating reference crop evapotranspiration in different sub-regions of mainland China.SCIENTIFIC REPORTS,7,19.
MLA Peng, Lingling,et al."The best alternative for estimating reference crop evapotranspiration in different sub-regions of mainland China".SCIENTIFIC REPORTS 7(2017):19.
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