干旱区生态环境知识资源中心(Arid): A novel method for simulating the dynamics of the single and dual maize crop coefficients in an arid ecosystem

Arid

DOI	10.1016/j.eja.2022.126688
	A novel method for simulating the dynamics of the single and dual maize crop coefficients in an arid ecosystem
	Wang, Pei; Li, Siying; Chen, Qi; Li, Xiao-Yan; Liu, Shaomin; Wu, Xiuchen; Yang, Xiaofan; Xu, Ziwei
通讯作者	Wang, P
来源期刊	EUROPEAN JOURNAL OF AGRONOMY
ISSN	1161-0301
EISSN	1873-7331
出版年	2023
卷号	142
英文摘要	The crop coefficient is a key link between crop evapotranspiration (ETc) and reference evapotranspiration (ET0), which is important for agricultural water management and irrigation strategy. However, how to quantify sea-sonal variations in the single and dual crop coefficients (Kc and Kcb, respectively) remains a challenge. This study aimed to provide a novel approach with a soil-plant-atmosphere continuum (SPAC) model under various land surface scenarios for reconstructing the dynamics of Kc and Kcb. A numerical SPAC model was validated by comparing with measurements both at hourly and daily mean dataset (e.g., eddy covariance for actual ET). The proposed model was then applied to the Heihe River Basin to calculate the seasonal and annual variations in both Kc and Kcb of maize. Kc and Kcb shown significant seasonality and interannual fluctuations. The Kc and Kcb presented a single-peak trend, reaching the maximum value in peaking growing season and fluctuating day to day. During growing season, changes in Kc, Kcb and the coefficient of soil evaporation (Ke) varied from 0.19 to 1.57, 0.08-1.50, and 0.01-0.19, with average values of 0.35, 0.39, and 0.04, respectively. It was found that leaf area index (LAI) was the dominant factor regulating Kc, Kcb, and Ke. This study implied that the SPAC model with numerical technique is efficient in reconstructing the dynamics (annual and inter-annual) of the crop coefficient and feasible for diagnosing complex interactions among soil, plants, and the atmosphere under various land surface scenarios.
英文关键词	Crop coefficient Dual crop coefficient Numerical modelling Diurnal and seasonal variations Arid oasis ecosystem
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000890484600002
WOS关键词	ENERGY-BALANCE CLOSURE ; DRIP-IRRIGATED COTTON ; EDDY-COVARIANCE ; RIVER-BASIN ; PARTITIONING EVAPOTRANSPIRATION ; EVAPORATIVE FLUX ; SOIL-WATER ; CLIMATE ; CANOPY ; MODEL
WOS类目	Agronomy
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396315
推荐引用方式 GB/T 7714	Wang, Pei,Li, Siying,Chen, Qi,et al. A novel method for simulating the dynamics of the single and dual maize crop coefficients in an arid ecosystem[J],2023,142.
APA	Wang, Pei.,Li, Siying.,Chen, Qi.,Li, Xiao-Yan.,Liu, Shaomin.,...&Xu, Ziwei.(2023).A novel method for simulating the dynamics of the single and dual maize crop coefficients in an arid ecosystem.EUROPEAN JOURNAL OF AGRONOMY,142.
MLA	Wang, Pei,et al."A novel method for simulating the dynamics of the single and dual maize crop coefficients in an arid ecosystem".EUROPEAN JOURNAL OF AGRONOMY 142(2023).