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DOI	10.1016/j.agwat.2018.12.002
	Estimation of crop evapotranspiration through spatial distributed crop coefficient in a semi-arid environment
	Rawat, Kishan Singh 1; Singh, Sudhir Kumar 2; Bala, Anju 3; Szabo, Szilard 4
通讯作者	Rawat, Kishan Singh
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2019
卷号	213 页码:922-933
英文摘要	Accurate and reliable estimation of reference crop evapotranspiration (ETo) is important due to its critical role in determining crop water requirement in irrigated agriculture. The aim of the paper was to estimate the evapotranspiration (ETc) using spatially distributed crop coefficient (K-c) and open access earth observing datasets in a semi-arid environment. We have estimated the actual evapotranspiration (ETc) based on spatially distributed crop coefficient K-c using following models namely Surface Energy Balance Algorithm for Land (SEBAL), Makkink model, Hargreaves and Samani model, Camargo method and Jensen-Haise model. Further, these models estimates were compared with Penman-Monteith estimate. Comparative evaluation of models was performed through statistical tests, and it was found that the Makkink model performed satisfactory compared with standard Penman-Monteith model estimate (R-2= 0.88). Leaf area index (LAI) and the K-c was in strong (second order polynomial) relationship (R-2= 0.98). The analysis also shows distributed actual evapotranspiration based on Makkink model has good agreement with actual evapotranspiration from Penman-Monteith with R-2 of 0.84, respectively, for the study area. The finding suggests that the Makkink model estimates ETo are very close to the universally accepted Penman-Monteith model based ETo.
英文关键词	Actual evapotranspiration Wheat Crop coefficient SEBAL model Penman-Monteith method
类型	Article
语种	英语
国家	India ; Hungary
收录类别	SCI-E
WOS记录号	WOS:000457952700087
WOS关键词	WHEAT TRITICUM-AESTIVUM ; LEAF-AREA INDEX ; WATER REQUIREMENTS ; VEGETATION INDEXES ; PENMAN-MONTEITH ; IRRIGATION ; HARGREAVES ; EQUATIONS ; SCHEME ; COTTON
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/213999
作者单位	1.Sathyabama Inst Sci & Technol, Ctr Remote Sensing & Geoinformat, 119, Chennai 119, Tamil Nadu, India; 2.Univ Allahabad, K Banerjee Ctr Atmospher & Ocean Studies, Nehru Sci Ctr, LIDS, Allahabad 211002, UP, India; 3.WCTM, Dept Civil Engn, Gurgaon, India; 4.Univ Debrecen, Dept Phys Geog & Geoinformat, Debrecen, Hungary
推荐引用方式 GB/T 7714	Rawat, Kishan Singh,Singh, Sudhir Kumar,Bala, Anju,et al. Estimation of crop evapotranspiration through spatial distributed crop coefficient in a semi-arid environment[J],2019,213:922-933.
APA	Rawat, Kishan Singh,Singh, Sudhir Kumar,Bala, Anju,&Szabo, Szilard.(2019).Estimation of crop evapotranspiration through spatial distributed crop coefficient in a semi-arid environment.AGRICULTURAL WATER MANAGEMENT,213,922-933.
MLA	Rawat, Kishan Singh,et al."Estimation of crop evapotranspiration through spatial distributed crop coefficient in a semi-arid environment".AGRICULTURAL WATER MANAGEMENT 213(2019):922-933.