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DOI	10.1016/j.agrformet.2021.108328
	Energy partitioning between plant canopy and soil, performance of the two-source energy balance model in a vineyard
	Kool, D.; Kustas, W. P.; Ben-Gal, A.; Agam, N.
通讯作者	Agam, N (corresponding author), Ben Gurion Univ Negev, French Associates Inst Agr & Biotechnol Drylands, Jacob Blaustein Inst Desert Res, Wyler Dept Dryland Agr, Sede Boqer Campus, IL-8499000 Beer Sheva, Israel.
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
ISSN	0168-1923
EISSN	1873-2240
出版年	2021
卷号	300
英文摘要	Partitioning of evapotranspiration (ET) into soil water evaporation and transpiration allows separate assessment of soil and plant water, energy, and carbon exchange. Remote sensing-based models are ideally suited to monitor ET over large areas, but ET partitioning estimates vary widely. The objective of this study was to evaluate the two-source energy balance (TSEB) model for seasonal ET partitioning using total, soil, and vine canopy energy balance fluxes measured over a vineyard in the Negev desert in Israel. Energy fluxes were evaluated with the original TSEB and three adapted versions using (1) measured soil heat flux, (2) optimized plant transpiration parameterization, and (3) measured soil and vine temperatures instead of composite surface temperature as model inputs. Optimization of plant transpiration parameters revealed a model tendency to underestimate transpiration due to underestimation of available energy and potential transpiration. Adaptations included, among others, accounting for higher leaf radiation absorption expected in dense clumped canopies, which increases available energy, and increasing the Priestley-Taylor coefficient from 1.26 to 2, which increases potential transpiration. While the original TSEB gave reasonable total energy fluxes, the vine energy fluxes were greatly underestimated. Both soil heat flux and plant transpiration adaptations improved modeled vine energy fluxes throughout the season under both well-watered and water-stressed conditions. However, the performance of the TSEB version using measured soil and vine temperatures was inferior to applying the standard TSEB with composite temperature. While daily energy fluxes could be estimated with reasonable accuracy, sub-daily fluxes proved to be more challenging and merit further research. Finally, changes in ET partitioning with canopy development and in response to water stress could be detected quite well albeit it with an underestimation of the transpiration fraction of ET, which, on average, amounted to 39% using standard TSEB and 6% with optimized plant transpiration parameters.
英文关键词	TSEB Evapotranspiration partitioning Evaporation Transpiration Remote sensing Row crop
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000635674500017
WOS关键词	RADIOMETRIC SURFACE-TEMPERATURE ; PRIESTLEY-TAYLOR APPROACH ; HEAT-FLUX ; MEDITERRANEAN DRYLANDS ; RADIATION MODEL ; NET-RADIATION ; EVAPOTRANSPIRATION ; EVAPORATION ; TRANSPIRATION ; CALIBRATION
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
来源机构	Ben-Gurion University of the Negev
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349317
作者单位	[Kool, D.] Ben Gurion Univ Negev, Jacob Blaustein Ctr Sci Cooperat, Jacob Blaustein Inst Desert Res, Sede Boqer Campus, IL-8499000 Beer Sheva, Israel; [Kool, D.; Agam, N.] Ben Gurion Univ Negev, French Associates Inst Agr & Biotechnol Drylands, Jacob Blaustein Inst Desert Res, Wyler Dept Dryland Agr, Sede Boqer Campus, IL-8499000 Beer Sheva, Israel; [Kustas, W. P.] USDA ARS, Hydrol & Remote Sensing Lab, Bldg 007,Rm 104, Beltsville, MD 20705 USA; [Ben-Gal, A.] Agr Res Org, Inst Soil Water & Environm Sci, Gilat Res Ctr, Mobile Post Negev 2, IL-8528000 Gilat, Israel
推荐引用方式 GB/T 7714	Kool, D.,Kustas, W. P.,Ben-Gal, A.,et al. Energy partitioning between plant canopy and soil, performance of the two-source energy balance model in a vineyard[J]. Ben-Gurion University of the Negev,2021,300.
APA	Kool, D.,Kustas, W. P.,Ben-Gal, A.,&Agam, N..(2021).Energy partitioning between plant canopy and soil, performance of the two-source energy balance model in a vineyard.AGRICULTURAL AND FOREST METEOROLOGY,300.
MLA	Kool, D.,et al."Energy partitioning between plant canopy and soil, performance of the two-source energy balance model in a vineyard".AGRICULTURAL AND FOREST METEOROLOGY 300(2021).