干旱区生态环境知识资源中心(Arid): Evapotranspiration partitioning and crop coefficient of maize in dry semi-humid climate regime

Arid

DOI	10.1016/j.agwat.2020.106164
	Evapotranspiration partitioning and crop coefficient of maize in dry semi-humid climate regime
	Wang, Yunfei 1,2,3; Cai, Huanjie 1,2; Yu, Lianyu 3; Peng, Xiongbiao 1,2; Xu, Jiatun 1,2; Wang, Xiaowen 1,2
通讯作者	Cai, Huanjie
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2020
卷号	236
英文摘要	Guanzhong Plain is one of the most critical maize production areas in Northwest China. It is essential to study the maize irrigation requirement and improve water use efficiency in this area. There is a lack of knowledge about the evaporation portioning and irrigation requirements of crops grown in this region. Based on evapotranspiration observed in a maize cropland using the eddy covariance (EC) technique during four growing seasons (2013, 2014, 2015, and 2017), the seasonal variation of evapotranspiration components and the crop coefficients (K-c) for summer maize in a dry semi-arid area were determined. Energy partitioning has an obvious seasonal variation during growing seasons. The pattern of evapotranspiration partitioning has a clear seasonal variation with the development of the canopy. The pattern of the ratio of transpiration (T) to evapotranspiration (ET) is consistent with the canopy development. For four growing seasons, on a seasonal basis, the ratios of T to ET and E to ET were comparable. In addition, the locally developed crop coefficients were 0.57, 1.01, and 0.50 for the initial, mid, and late stages, respectively. The single crop coefficient derived from local datasets can provide a good prediction of ET. The K-c values reported in this paper were consistent with previous studies conducted in other regions using EC systems but were generally lower than the K-c values derived from ET data measured by lysimeters, the Bowen Ratio Energy Balance system, and the soil water balance method. This indicates that the variability of the locally developed crop coefficient caused by measurement methods is higher than the variability caused by climate.
英文关键词	Evapotranspiration partitioning Energy fluxes Crop coefficient Eddy covariance
类型	Article
语种	英语
国家	Peoples R China ; Netherlands
收录类别	SCI-E
WOS记录号	WOS:000527556800003
WOS关键词	ENERGY-BALANCE CLOSURE ; EDDY-COVARIANCE ; WINTER-WHEAT ; FLUX MEASUREMENTS ; DRIP IRRIGATION ; PLASTIC MULCH ; EXCHANGE ; EVAPORATION
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319352
作者单位	1.Northwest Agr & Forestry Univ, Key Lab Agr Soil & Water Engn Arid Area, Minist Educ, Yangling, Shaanxi, Peoples R China; 2.Northwest Agr & Forestry Univ, Inst Water Saving Agr Arid Reg China IWSA, Yangling, Shaanxi, Peoples R China; 3.Univ Twente, Fac Geoinformat Sci & Earth Observat, Enschede, Netherlands
推荐引用方式 GB/T 7714	Wang, Yunfei,Cai, Huanjie,Yu, Lianyu,et al. Evapotranspiration partitioning and crop coefficient of maize in dry semi-humid climate regime[J]. 西北农林科技大学,2020,236.
APA	Wang, Yunfei,Cai, Huanjie,Yu, Lianyu,Peng, Xiongbiao,Xu, Jiatun,&Wang, Xiaowen.(2020).Evapotranspiration partitioning and crop coefficient of maize in dry semi-humid climate regime.AGRICULTURAL WATER MANAGEMENT,236.
MLA	Wang, Yunfei,et al."Evapotranspiration partitioning and crop coefficient of maize in dry semi-humid climate regime".AGRICULTURAL WATER MANAGEMENT 236(2020).