干旱区生态环境知识资源中心(Arid): Determination of Actual Evapotranspiration and Crop Coefficients of California Date Palms Using the Residual of Energy Balance Approach

Arid

DOI	10.3390/w12082253
	Determination of Actual Evapotranspiration and Crop Coefficients of California Date Palms Using the Residual of Energy Balance Approach
	Montazar, Aliasghar; Krueger, Robert; Corwin, Dennis; Pourreza, Alireza; Little, Cayle; Rios, Sonia; Snyder, Richard L.
通讯作者	Montazar, A
来源期刊	WATER
EISSN	2073-4441
出版年	2020
卷号	12 期号:8
英文摘要	As water scarcity becomes of greater concern in arid and semi-arid regions due to altered weather patterns, greater and more accurate knowledge regarding evapotranspiration of crops produced in these areas is of increased significance to better manage limited water resources. This study aimed at determining the actual evapotranspiration (ETa) and crop coefficients (K-a) in California date palms. The residual of energy balance method using a combination of surface renewal and eddy covariance techniques was applied to measure ET(a)in six commercial mature date palm orchards (8-22 years old) over one year. The experimental orchards represent various soil types and conditions, irrigation management practices, canopy characteristics, and the most common date cultivars in the region. The results demonstrated considerable variability in date palm consumptive water use, both spatially and temporally. The cumulative ETa(CETa) across the six sites ranged from 1299 to 1501 mm with a mean daily ET(a)of 7.2 mm day(-1)in June-July and 1.0 mm day(-1)in December at the site with the highest crop water consumption. The mean monthly K(a)values varied between 0.63 (December) and 0.90 (June) in the non-salt-affected, sandy loam soil date palms with an average density of 120 plants ha(-1)and an average canopy cover and tree height of more than 80% and 11.0 m, respectively. However, the values ranged from 0.62 to 0.75 in a silty clay loam saline-sodic date palm orchard with 55% canopy cover, density of 148 plants ha(-1), and 7.3 m tree height. Inverse relationships were derived between the CET(a)and soil salinity (ECe) in the crop root zone; and between the mean annual K(a)and ECe. This information addresses the immediate needs of date growers for irrigation management in the region and enables them to more efficiently utilize water and to achieve full economic gains in a sustainable manner, especially as water resources become less available or more expensive.
英文关键词	California low desert crop coefficient date palm evapotranspiration residual of energy balance calculations
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	SCI-E
WOS记录号	WOS:000564623200001
WOS关键词	SURFACE RENEWAL ANALYSIS ; EDDY-COVARIANCE ; LONG-TERM ; GROWTH ; YIELD
WOS类目	Water Resources
WOS研究方向	Water Resources
来源机构	University of California, Davis
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325932
作者单位	[Montazar, Aliasghar] Univ Calif Div Agr & Nat Resources, UC Cooperat Extens Imperial Cty, 1050 East Holton Rd, Holtville, CA 92250 USA; [Krueger, Robert] USDA ARS Natl Clonal Germplasm Repository Citrus, 1060 Martin Luther King Blvd, Riverside, CA 92507 USA; [Corwin, Dennis] USDA ARS, US Salin Lab, 450 West Big Springs Rd, Riverside, CA 92507 USA; [Pourreza, Alireza] Univ Calif Davis, Dept Biol & Agr Engn, One Shields Ave, Davis, CA 95616 USA; [Little, Cayle] Calif Dept Water Resources, 901 P St, Sacramento, CA 95814 USA; [Rios, Sonia] Univ Calif Div Agr & Nat Resources, UC Cooperat Extens Riverside Cty, 21150 Box Springs Rd, Moreno Valley, CA 92557 USA; [Snyder, Richard L.] Univ Calif Davis, Dept Land Air & Water Resources, One Shields Ave, Davis, CA 95616 USA
推荐引用方式 GB/T 7714	Montazar, Aliasghar,Krueger, Robert,Corwin, Dennis,et al. Determination of Actual Evapotranspiration and Crop Coefficients of California Date Palms Using the Residual of Energy Balance Approach[J]. University of California, Davis,2020,12(8).
APA	Montazar, Aliasghar.,Krueger, Robert.,Corwin, Dennis.,Pourreza, Alireza.,Little, Cayle.,...&Snyder, Richard L..(2020).Determination of Actual Evapotranspiration and Crop Coefficients of California Date Palms Using the Residual of Energy Balance Approach.WATER,12(8).
MLA	Montazar, Aliasghar,et al."Determination of Actual Evapotranspiration and Crop Coefficients of California Date Palms Using the Residual of Energy Balance Approach".WATER 12.8(2020).