期刊
JOURNAL OF ENVIRONMENTAL MANAGEMENT
卷 329, 期 -, 页码 -出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2022.116984
关键词
Gravity; Virtual water flows; MRIO; Quantity; Quality
资金
- National Key Scientific Research Project [2021YFC3200200]
- Excellent Young Scientists Fund from National Natural Science Foundation of China [72022004]
- National Natural Science Foundation of China [72204176]
- Research Center for System Sciences and Enterprise Development [Xq21B03]
This study uses MRIO and gravity methods to investigate virtual water trade flows among 177 countries in 2014, and finds several strongly correlated factors influencing grey water trade, offering valuable insights for water resource management.
The virtual water trade (VWT) has been proposed as a means of balancing national water budgets while also saving water globally. Since humans require both sufficient quantity and quality of water, the drivers of VWT flows should be thoroughly examined, including its three components. Multiregional input-output (MRIO) and gravity methods are used to investigate the influence of multiple factors on the green, blue, and grey water trading flows among 177 countries in 2014. Several factors were found to be strongly correlated with the grey water trade, offering valuable insight into water resource management, especially about water pollution. The findings verify the driving effects of socio-economic status and agricultural activities on virtual water trade. The study shows that the influence of water resources endowment on the virtual water trade flow is relatively small compared to economic structure in determining virtual water trade flows. The paper contributes to the research on the interaction between virtual water trade and various factors, which can assist decision-makers in optimizing economic structure by integrating water quantity and quality factors and realize sustainable management of water resources.
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