Assessment of Natural Gas Supply and Demand Security in China Based on Set Pair Analysis

Studying the security status of China's natural gas supply and proposing a feasible coping strategy for enhancing that security is of great significance. This paper from the security of supply, demand and market security three dimensions to build China's natural gas supply and demand of security evaluation index system, and index evaluation criteria according to the I (poor), II (medium), III (better), was analyzed by using the set pair analysis model between 2006 and 2017, China's natural gas supply and demand of security evolution trend. The research shows that the overall security index of natural gas supply and demand in China from 2000 to 2017 shows a trend of first rising and then falling, the correlation between China's natural gas supply and demand security index and the optimal evaluation set III fluctuates from 0.16 in 2006 to 0.34 in 2009 and then to 0.22 in 2017. Finally, we put forward some policy implications to ensure the security of natural gas supply and demand in China from the perspectives of natural gas supply, efficiency and market.