干旱区生态环境知识资源中心(Arid): Spatiotemporal evolution of crop grey water footprint and associated water pollution levels in arid regions of western China

Arid

DOI	10.1016/j.agwat.2023.108224
	Spatiotemporal evolution of crop grey water footprint and associated water pollution levels in arid regions of western China
	Zhao, Danyue; Liu, Wenxin; Gao, Rong; Zhang, Ping; Li, Meng; Wu, Pute; Zhuo, La
通讯作者	Liu, WX
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2023
卷号	280
英文摘要	The widespread use of agricultural fertilisers threatens freshwater ecosystems hugely. Grey water footprint (GWF) assessment can be used to evaluate the freshwater pollution level. However, the national fertiliser leaching-runoff rates have been assumed constant while analysing GWF, and this omission could compromise their spatial variations at intra-national levels. This study quantified the GWFs for 12 crops and their related water pollution levels (WPLs) by taking into account the spatial variability of fertiliser leaching-runoff rates in 51 prefectures across five provinces in West China from 2001 to 2017. Considering the main crops and all the provinces, results showed that GWF of unit mass of crops (in m3 t-1) decreased due to increasing crop yields. The total annual GWF (in m3 y-1) increased by 45% during 2001-2017. Although a reduction in the crop fertilisation rates was observed, on average, the expansion of the intensively cultivated areas outperformed the former, thus, worsening the general pollution level. Although declining, the resulting WPLs were always greater than 1 during the study period, pointing out persistent conditions of water pollution. It can be concluded that adjusting crop allocation to land in water-shortened areas was more effective in reducing GWF than simply lowering the fer-tilisation amount.
英文关键词	Nitrogen fertiliser Phosphors fertiliser Leaching-runoff rate Chinese prefectures Crop production
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:000946053400001
WOS关键词	ANTHROPOGENIC NITROGEN ; RIVER-BASIN ; FLOWS ; LOADS
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/2XILL650/395054
推荐引用方式 GB/T 7714	Zhao, Danyue,Liu, Wenxin,Gao, Rong,et al. Spatiotemporal evolution of crop grey water footprint and associated water pollution levels in arid regions of western China[J],2023,280.
APA	Zhao, Danyue.,Liu, Wenxin.,Gao, Rong.,Zhang, Ping.,Li, Meng.,...&Zhuo, La.(2023).Spatiotemporal evolution of crop grey water footprint and associated water pollution levels in arid regions of western China.AGRICULTURAL WATER MANAGEMENT,280.
MLA	Zhao, Danyue,et al."Spatiotemporal evolution of crop grey water footprint and associated water pollution levels in arid regions of western China".AGRICULTURAL WATER MANAGEMENT 280(2023).