干旱区生态环境知识资源中心(Arid): The characteristics of evapotranspiration and crop coefficients of an irrigated vineyard in arid Northwest China

Arid

DOI	10.1016/j.agwat.2018.09.023
	The characteristics of evapotranspiration and crop coefficients of an irrigated vineyard in arid Northwest China
	Wang, Shangtao; Zhu, Gaofeng; Xia, Dunsheng; Ma, Jinzhu; Han, Tuo; Ma, Ting; Zhang, Kun; Shang, Shasha
通讯作者	Zhu, Gaofeng
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2019
卷号	212 页码:388-398
英文摘要	Oasis effect may have significant impacts on the crop water use in irrigated fields of extremely arid conditions. Studies on crop coefficients and its relevant influence factors are essential to accurately determine the irrigation scheduling under such conditions. A two-year experiment was conducted in an irrigated vineyard to estimate evapotranspiration (ET) and its two components: evaporation (E) and crop transpiration (T), and to develop appropriate region-specific crop coefficients (K-c, K-cb) in arid Northwest China. The contributions of oasis effect to the relationships of both K-c and K-cb to canopy conductance (G(c)) and leaf area index (LAI) were investigated. Local values of K-c for evapotranspiration and crop transpiration (K-cb) were calculated using the field data and the dual-K-c approach. The daily ET ranged from 0.80 to 9.87 mm d(-1) and from 0.99 to 8.73 mm d(-1) in 2014 and 2015, respectively, with corresponding T/ET values amounting to approximately 58.4% and 55.1%. The locally averaged K-c values were 0.79, 1.31, and 1.08 during the initial, middle, and late growth stages, respectively, versus corresponding K-cb values of 0.17, 0.97, and 0.64. Arid advection accounted for 16.9 to 57.4% and from 1.4 to 49.0% of daily K-c during the two study periods. Both K-c and K-cb to LAI is a linear regression but to G(c) is an exponential one. LAI is a better indicator than G(c) when it is used to predict K-c and K-cb. These results will help growers to improve irrigation efficiency and quantify the contributions of individual factors to K-c and K-cb in such conditions.
英文关键词	Evapotranspiration Crop coefficient Oasis Effect Oasis ecosystem
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000448095900037
WOS关键词	THOMPSON SEEDLESS GRAPEVINES ; WATER-USE ; SAP FLOW ; ENERGY-BALANCE ; K-C ; TRANSPIRATION ; EVAPORATION ; GROUNDWATER ; ADVECTION ; EVOLUTION
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/213977
作者单位	Lanzhou Univ, Coll Earth & Environm Sci, Minist Educ, Key Lab Western Chinas Environm Syst, 222 South Tianshui Rd, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wang, Shangtao,Zhu, Gaofeng,Xia, Dunsheng,et al. The characteristics of evapotranspiration and crop coefficients of an irrigated vineyard in arid Northwest China[J]. 兰州大学,2019,212:388-398.
APA	Wang, Shangtao.,Zhu, Gaofeng.,Xia, Dunsheng.,Ma, Jinzhu.,Han, Tuo.,...&Shang, Shasha.(2019).The characteristics of evapotranspiration and crop coefficients of an irrigated vineyard in arid Northwest China.AGRICULTURAL WATER MANAGEMENT,212,388-398.
MLA	Wang, Shangtao,et al."The characteristics of evapotranspiration and crop coefficients of an irrigated vineyard in arid Northwest China".AGRICULTURAL WATER MANAGEMENT 212(2019):388-398.