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Temporal Characteristics and Spatial Homogeneity of Virtual Water Trade: A Complex Network Analysis

  • Xinghua Fan
  • Xuxia Li
  • Jiuli YinEmail author
  • Jiaochen Liang
Article
  • 29 Downloads

Abstract

International trade of commodities causes an international water flow in virtual form. This study focuses on the virtual water flow related to international crop trade. We build complex networks of virtual water trade (Virtual Water Trade Networks, VWTNs hereafter) with annual data of trade and its virtual water content from 1986 to 2013 among all countries. By analyzing the temporal characteristics and spatial homogeneity of the VWTNs, we find that trade networks display a feature of scale-free. This suggests those core export and import countries play dominant roles in international virtual water flows. However, the structure of the VWTN becomes more heterogeneous with time, indicating that virtual water trade has been getting more globalized. By spatially recoding the trade volumes and using detrended fluctuation analysis, this study finds that geographical distance becomes less binding in international virtual water trades. Other important findings from our VWTNs analysis include that virtual water trade patterns remain relative stable within trading groups and that geopolitical, political, and economic environments can significantly influence world virtual water trade flows. This study provides an understanding of the international water trade and its relationship with the macro social and economical conditions at the global scale. Its method thus can be applied to analyze the temporal and spatial dynamics of other networks with directed trade flow.

Keywords

Virtual water International trade network Complex network Agriculture trade Spatial relativity 

Notes

Acknowledgements

Research is supported by the National Natural Science Foundation of China [No. 71673116], Natural Science Foundation of Jiangsu Province [No. SBK2015021674], and the Humanistic and Social Science Foundation from Ministry of Education of China [Grant 16YJAZH007].

Compliance with Ethical Standards

Conflict of interests

The authors declare that they have no conflict of interest.

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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  • Xinghua Fan
    • 1
  • Xuxia Li
    • 1
  • Jiuli Yin
    • 1
    Email author
  • Jiaochen Liang
    • 2
  1. 1.Center for Energy Development and Environmental Protection Strategy ResearchJiangsu UniversityZhenjiangChina
  2. 2.Department of Agricultural BusinessCalifornia State UniversityFresnoUSA

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