Spatial and temporal variability analysis of green and blue evapotranspiration of wheat in the Egyptian Nile Delta from 1997 to 2017

doi:10.1016/j.jhydrol.2020.125662

	Spatial and temporal variability analysis of green and blue evapotranspiration of wheat in the Egyptian Nile Delta from 1997 to 2017
	Elbeltagi, Ahmed 1,2; Aslam, Muhammad Rizwan 1; Mokhtar, Ali 3,4; Deb, Proloy 5; Abubakar, Ghali Abdullahi 1; Kushwaha, N. L.6; Venancio, Luan Peroni 7; Malik, Anurag 8; Kumar, Navsal 9; Deng, Jinsong 1
刊名	JOURNAL OF HYDROLOGY
	2021-03-01
卷号	594 页码:15
关键词	Green evapotranspiration Blue evapotranspiration Water saving Water management Land use land cover
ISSN号	0022-1694
DOI	10.1016/j.jhydrol.2020.125662
通讯作者	Deng, Jinsong(jsong_deng@zju.edu.cn)
英文摘要	Assessing green and blue water evapotranspiration (GWET and BWET) is the key to water resources management and improving water productivity. This study focuses on assessing, evaluating and managing evapotranspiration in Egyptian Nile Delta over 1997-2017 for thirteen regions. The monthly data of minimum and maximum temperatures, precipitation and solar radiation from November to May were derived from open access data for calculation of reference evapotranspiration and rainfall accounts. Wheat crop coefficient (K-c) values were estimated using the air temperature and base temperature of crop. GWET and BWET were calculated and mapped for each region in the ArcGIS environment. Land use land cover (LULC) was analyzed during 1997, 2005, 2011, and 2017 using Landsat images. The main findings of the research are as follows: (1) average values of crop coefficients Kc-init, Kc-mid and Kc-end were 0.72, 1.13, and 0.41 through initial, middle, and end growing seasons, respectively; (2) the best regions for saving green and blue water were Sidi-Salim, Bilqas, Ar-Riyad, Al-Hamul, and Biyala; (3) the total water saved was 4.80% and 53.12% of blue and green water accounts; (4) high coefficients of determination between precipitation, GWET, and BWET proportions were 0.99 for both. Furthermore, relative irrigation supply is a good indicator for predicting GWET and BWET with determination coefficients of 0.99 and 0.76, respectively. It can be concluded that the data integration of geographic information and LULC changes is the best way for water management and sustainable agro system development under limited water resources.
资助项目	Ministry of Science and Technology of the People's Republic of China[2016YFC0503404] ; Natural Science Foundation of Zhejiang Province[LY18G030006]
WOS关键词	HARGREAVES EQUATION ; CROP COEFFICIENTS ; IRRIGATION ; REGION ; UNITS ; GIS
WOS研究方向	Engineering ; Geology ; Water Resources
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000641589600010
资助机构	Ministry of Science and Technology of the People's Republic of China ; Natural Science Foundation of Zhejiang Province
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/164858]
专题	中国科学院地理科学与资源研究所
通讯作者	Deng, Jinsong
作者单位	1.Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou 310058, Peoples R China 2.Mansoura Univ, Fac Agr, Agr Engn Dept, Mansoura 35516, Egypt 3.Northwest Agr & Forestry Univ, Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 4.Cairo Univ, Fac Agr, Dept Agr Engn, Giza 12613, Egypt 5.Univ Alabama, Ctr Complex Hydrosyst Res CCHR, Dept Civil Construct & Environm Engn, Tuscaloosa, AL 35487 USA 6.ICAR Indian Agr Res Inst, Div Agr Engn, New Delhi 110012, India 7.Fed Univ Vicosa UFV, Agr Engn Dept, Ave Peter Henry Rolfs, BR-36570900 Vicosa, MG, Brazil 8.Punjab Agr Univ, Reg Res Stn, Bathinda 151001, Punjab, India 9.Natl Inst Technol Hamirpur, Dept Civil Engn, Hamirpur 177005, Himachal Prades, India
推荐引用方式 GB/T 7714	Elbeltagi, Ahmed,Aslam, Muhammad Rizwan,Mokhtar, Ali,et al. Spatial and temporal variability analysis of green and blue evapotranspiration of wheat in the Egyptian Nile Delta from 1997 to 2017[J]. JOURNAL OF HYDROLOGY,2021,594:15.
APA	Elbeltagi, Ahmed.,Aslam, Muhammad Rizwan.,Mokhtar, Ali.,Deb, Proloy.,Abubakar, Ghali Abdullahi.,...&Deng, Jinsong.(2021).Spatial and temporal variability analysis of green and blue evapotranspiration of wheat in the Egyptian Nile Delta from 1997 to 2017.JOURNAL OF HYDROLOGY,594,15.
MLA	Elbeltagi, Ahmed,et al."Spatial and temporal variability analysis of green and blue evapotranspiration of wheat in the Egyptian Nile Delta from 1997 to 2017".JOURNAL OF HYDROLOGY 594(2021):15.