RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2021, Vol. 30 >> Issue (3): 602-613.doi: 10.11870/cjlyzyyhj202103008

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Study on the Characteristics of Inter-Regional Water Footprint Spatial Transfer Network in China

YAN Xiao-dong 1 ,SUN Cai-zhi 2   

  1. (1. School of Geographical Sciences, Liaoning Normal University, Dalian 116029, China;2.Center for studies of marine economy and sustainable development, Dalian 116029, China)
  • Online:2021-03-20 Published:2021-04-07

Abstract: Water shortage has seriously affected human survival and China’s sustainable development. Analysis of water resources in various regions is the key for addressing China’s water resources problems. This study used multiregional input-output tables for 2007 and 2012 ,calculated the water footprint transfer amount of China’s 30 provinces, municipalities, and autonomous regions (not including Tibet, Hong Kong, Macao and Taiwan), and the source-sink system theory are used to analyze the flow pattern of the water resource network among regions within China. Finally, an ecological network analysis model is constructed to deeply analyze the inter-regional water footprint control, dependence, and the Finn cycle index and system robustness of water resource network. The results show that: (1) The regions with large water footprint output are Heilongjiang and Xinjiang, and the regions with large water footprint input are mostly economically large areas such as Jiangsu, Zhejiang, Guangdong and Shandong. (2)In the source system, eight areas such as Heilongjiang are important sources of water footprint. The water footprint extroversion coefficient of most source provinces has a decreasing trend, each region has a strong competitive relationship with water footprint consumption. In the sink system, the regions with large convergence coefficient are Jiangsu, Zhejiang, Shandong, and Guangdong; the dependence coefficient of Beijing and Tianjin are large, and the dependence coefficient of most regions shows a decreasing trend. (3) Heilongjiang and Xinjiang have a strong control relationship with other regions, while Beijing and Tianjin have a strong dependence relationship with other regions. 4)The circularity of water resources network is poor. Only Jiangsu and Guangdong had higher contributions in 2007 and 2012; In addition, the system robustness analysis showed that the water resources network is less efficient and more redundant. Water footprint transfer and spatial pattern analysis among regions within China can provide theoretical basis for addressing water resources problems, and provide theoretical support for rational utilization of regional and industrial water resources.

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