干旱区生态环境知识资源中心(Arid): Water use efficiency and its drivers of two typical cash crops in an arid area of Northwest China

Arid

DOI	10.1016/j.agwat.2023.108433
	Water use efficiency and its drivers of two typical cash crops in an arid area of Northwest China
	Yu, Haichao; Li, Sien; Ding, Jie; Yang, Tianyi; Wang, Yuexin
通讯作者	Li, S
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2023
卷号	287
英文摘要	Ecosystem water use efficiency (WUE), an important indicator to evaluate the interaction between the carbon cycle and the water cycle, plays a critical role in water resources management. In recent years, the cultivation of cash crops is becoming increasingly widespread in arid areas of Northwest China. However, the magnitudes and drivers of their WUEs remain unclear. In this study, we conducted continuous observations of water-carbon fluxes and related environmental factors in the field with the four rotations of cash crops in Northwest China. The results showed that: (1) The mean WUEs of cabbages and oats throughout their whole growth period are 2.24 & PLUSMN; 0.13 and 3.78 & PLUSMN; 1.68 g C kg-1 H2O, respectively. The WUE of oats is 1.56-1.77 times higher than that of cabbages, mainly due to their larger differences in gross primary productivity (621.8 and 1025.8 g C m-2). (2) The correlation analysis and the principal component analysis indicate that the WUEs of cabbages and oats are mainly affected by the physiological factors (leaf area) and environmental factors (air temperature), respectively. (3) The WUE of cabbages and oats are respectively 1.16-4.82 times and 2.33-9.69 times higher than those of main grain crops, such as maize, wheat, rice, etc. There is a more significant water-saving potential in the two cash crops than main grain crops in arid areas. These findings can provide a reference for the scientific development of typical cash crops and the water-saving practice of agriculture in Northwest China.
英文关键词	Water use efficiency Cabbages Oats Cash crops Drivers
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:001029203900001
WOS关键词	ECOSYSTEM ; EVAPOTRANSPIRATION ; TRANSPIRATION ; EXCHANGE ; IMPACT ; FOREST ; MAIZE ; PRODUCTIVITY ; RESPIRATION ; IRRIGATION
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395075
推荐引用方式 GB/T 7714	Yu, Haichao,Li, Sien,Ding, Jie,et al. Water use efficiency and its drivers of two typical cash crops in an arid area of Northwest China[J],2023,287.
APA	Yu, Haichao,Li, Sien,Ding, Jie,Yang, Tianyi,&Wang, Yuexin.(2023).Water use efficiency and its drivers of two typical cash crops in an arid area of Northwest China.AGRICULTURAL WATER MANAGEMENT,287.
MLA	Yu, Haichao,et al."Water use efficiency and its drivers of two typical cash crops in an arid area of Northwest China".AGRICULTURAL WATER MANAGEMENT 287(2023).