干旱区生态环境知识资源中心(Arid): Spatial scale effect of irrigation efficiency paradox based on water accounting framework in Heihe River Basin, Northwest China

Arid

DOI	10.1016/j.agwat.2022.108118
	Spatial scale effect of irrigation efficiency paradox based on water accounting framework in Heihe River Basin, Northwest China
	Cai, Wenjuan; Jiang, Xiaohui; Sun, Haotian; Lei, Yuxin; Nie, Tong; Li, Lichan
通讯作者	Jiang, XH
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2023
卷号	277
英文摘要	Improving irrigation efficiency (IE) to alleviate water shortage has been deemed viable. However, the so-called irrigation efficiency paradox (IEP) can complicate this process, where agricultural water consumption remains high despite the enhanced irrigation efficiency, particularly in arid regions. This study developed a judgment method of IEP based on a water accounting framework and the IEP definition to detect the IEP occurring across spatial scales in the middle Heihe River Basin, the second-largest inland river basin in Northwest China. Furthermore, the scale effects of the IEP were analyzed. The results showed that evaluated by evapotranspiration (ET) and transpiration (T), the scale effect occurred because IEP does not necessarily occur at the field scale but at the irrigation district scale and basin scale. Evaluated by Inflows (I) and surface water diversion and groundwater extraction (Isg), the scale effect occurred because IEP may occur at the field and the irrigation district scales but not at the basin scale. Further, the IEP was also influenced by time scales and regional agricultural characteristics. The results can be referenced for water-saving measures, avoiding the potential IEP for actual water savings in arid regions worldwide.
英文关键词	Scale effect Irrigation efficiency paradox Water accounting framework Heihe river basin
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:000911361300001
WOS关键词	IMPROVEMENT ; INCREASE ; COSTS ; MODEL
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/2XILL650/395031
推荐引用方式 GB/T 7714	Cai, Wenjuan,Jiang, Xiaohui,Sun, Haotian,et al. Spatial scale effect of irrigation efficiency paradox based on water accounting framework in Heihe River Basin, Northwest China[J],2023,277.
APA	Cai, Wenjuan,Jiang, Xiaohui,Sun, Haotian,Lei, Yuxin,Nie, Tong,&Li, Lichan.(2023).Spatial scale effect of irrigation efficiency paradox based on water accounting framework in Heihe River Basin, Northwest China.AGRICULTURAL WATER MANAGEMENT,277.
MLA	Cai, Wenjuan,et al."Spatial scale effect of irrigation efficiency paradox based on water accounting framework in Heihe River Basin, Northwest China".AGRICULTURAL WATER MANAGEMENT 277(2023).