干旱区生态环境知识资源中心(Arid): Partitioning evapotranspiration of a drip-irrigated wheat crop: Inter-comparing eddy covariance-, sap flow-, lysimeter- and FAO-based methods

Arid

DOI	10.1016/j.agrformet.2018.11.031
	Partitioning evapotranspiration of a drip-irrigated wheat crop: Inter-comparing eddy covariance-, sap flow-, lysimeter- and FAO-based methods
	Rafi, Zoubair 1,2; Merlin, Olivier 1,2; Le Dantec, Valerie 2; Khabba, Said 1; Mordelet, Patrick 2; Er-Raki, Salah 3; Amazirh, Abdelhakim 2,3; Olivera-Guerra, Luis 2; Hssaine, Bouchra Ait 1,2; Simonneaux, Vincent 1,2; Ezzahar, Jamal 4; Ferrer, Francesc 5
通讯作者	Rafi, Zoubair
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
ISSN	0168-1923
EISSN	1873-2240
出版年	2019
卷号	265 页码:310-326
英文摘要	A precise estimate of the evapotranspiration (ET) partitioning is fundamental for determining the crop water needs and optimizing irrigation management. The plant transpiration (T) is generally considered to be the most desirable component, while reducing the soil evaporation (E) could be one of the most important water-saving actions in semi-arid agricultural regions. Given the lack of reference method to estimate the E/T partitioning of wheat crop, this study inter-compares four different methods based on eddy covariance, sap flow and lysimetry measurements and FAO modeling. The objectives are: i) to quantify the systematic and random uncertainty in E and T observations, ii) to evaluate the partitioning ratio (T/ET) at the daily/field scale and iii) to assess the performance of the FAO model over two drip irrigated wheat fields. Results indicate that despite the small surface sensed by mini-lysimeters, the partitioning ratio is evaluated more precisely (19% relative error) with lysimetry than with the other systems (any combination of eddy covariance, lysimetry and sap flow measurements). Moreover, stem-scale T measurements from sap flow sensors are subject to representativeness issues at the field scale, and to systematic errors during water-stress and senescence periods. The lysimeter-derived partitioning ratio increases from about 0.50 to 0.85 during the growth stage and rapidly drops towards 0 during senescence. Its dynamics is found to be significantly correlated (R > 0.7) with the 5-cm soil moisture. By comparing FAO simulations with observations, it is found that the FAO method overestimates T and underestimates E, while keeping satisfying ET estimates for drip irrigated wheat. This study suggests that different independent measurement techniques should be implemented to both quantify and reduce uncertainties in the T/ET ratio, and that accurate observations are still needed to improve the modeling of E/T components.
英文关键词	Wheat Evaporation-transpiration Sap flow Lysimeter Eddy correlation FAO-56
类型	Article
语种	英语
国家	Morocco ; France ; Spain
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000456751200026
WOS关键词	SURFACE SOIL-MOISTURE ; RAINFALL WATER INPUT ; HEAT-BALANCE METHOD ; WINTER-WHEAT ; MICROLYSIMETER STATION ; EVAPORATION ; MODEL ; TRANSPIRATION ; MAIZE ; FIELD
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
来源机构	French National Research Institute for Sustainable Development
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/213936
作者单位	1.Univ Cadi Ayyad, Fac Sci Semlalia, LMME, Marrakech, Morocco; 2.Univ Toulouse, CNRS, CESBIO, IRD,UPS,CNES, Toulouse, France; 3.Univ Cadi Ayyad, Fac Sci & Tech, Dept Phys Appl, LP2M2E, Marrakech, Morocco; 4.Univ Cadi Ayyad, Ecole Natl Sci Appl, Equipe MTI, Safi, Morocco; 5.Ctr Asesoria Dr Ferrer, LabFerrer, Cervera, Spain
推荐引用方式 GB/T 7714	Rafi, Zoubair,Merlin, Olivier,Le Dantec, Valerie,et al. Partitioning evapotranspiration of a drip-irrigated wheat crop: Inter-comparing eddy covariance-, sap flow-, lysimeter- and FAO-based methods[J]. French National Research Institute for Sustainable Development,2019,265:310-326.
APA	Rafi, Zoubair.,Merlin, Olivier.,Le Dantec, Valerie.,Khabba, Said.,Mordelet, Patrick.,...&Ferrer, Francesc.(2019).Partitioning evapotranspiration of a drip-irrigated wheat crop: Inter-comparing eddy covariance-, sap flow-, lysimeter- and FAO-based methods.AGRICULTURAL AND FOREST METEOROLOGY,265,310-326.
MLA	Rafi, Zoubair,et al."Partitioning evapotranspiration of a drip-irrigated wheat crop: Inter-comparing eddy covariance-, sap flow-, lysimeter- and FAO-based methods".AGRICULTURAL AND FOREST METEOROLOGY 265(2019):310-326.