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  • 标题:Changes of virtual water trade based on input-output model in Shandong Province and environment response in representative region
  • 本地全文:下载
  • 作者:Fengli Li ; Qing Sun ; Weiping Wang
  • 期刊名称:IOP Conference Series: Earth and Environmental Science
  • 印刷版ISSN:1755-1307
  • 电子版ISSN:1755-1315
  • 出版年度:2019
  • 卷号:310
  • 期号:5
  • 页码:1-8
  • DOI:10.1088/1755-1315/310/5/052059
  • 出版社:IOP Publishing
  • 摘要:The purpose of this paper is to analyze the change trend of the virtual water trade for a 15-year period in Shandong Province, and to discuss how ecological environment is affected by numerous virtual water trade in a representative region. To carry out the analysis, the authors derived a water balance model from lateral economic balance formula in the input-output table. The model was combined with the economic data from Shandong Province's input-output tables and environmental Kuznets curve for an analysis of the change trend of virtual water trade of different industries. Findings - The agriculture is the largest industry that consumes water among three industries, and it plays a conclusive role on whether Shandong Province export virtual water or import virtual water. The virtual water of the province was exported in 1997 and 2002 and imported in 2007 and 2012. This situation was in line with the change of the environmental Kuznets curve and such transformation can be considered a kind of repair to the ecological environment. When the net output volume of virtual water was zero, the total output value of agriculture was 257.86× 109 Yuan. About the representative region (Shouguang City), the annual irrigation water of vegetables is approximately 1.6× 108 m3, of which 84.5% water is exported to other areas in the form of vegetable trade. The virtual water quantity exported in the form of vegetable accounted for approximately 73% of the annual average groundwater resources. Shandong Province has insufficient water resources, and this study can provide a scientific basis for allocating water resources and repairing ecological environment.
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