Comprehensive evaluation on urban gas utilization in China based on principal component analysis method

The urban gas is an important part of natural gas consumption, and it is of great significance to evaluate comprehensively the utilization of urban gas in China. In this paper, the factors influencing the urban gas in China were analyzed. Then, 17 indicators were selected from five aspects of urban economic development, gas resources, gas infrastructure, society & safety and low-carbon environmental protection, and the evaluation indicator system of the urban gas utilization was established. Finally, 32 major cities in China were selected as the samples for the comprehensive evaluation of urban gas utilization based on principal component analysis method. It is shown that the advantages and disadvantages of gas utilization of each city can be better analyzed according to the score of each factor and the ranking of comprehensive score. Meanwhile, the status of urban gas utilization in the whole country can be understood by performing comparison between cities. It is indicated from the analysis on the regional differences that the gas utilization ratio in the eastern area is significantly higher than that in the central and western areas, and the gas utilization ratio in the western area is slightly higher than that in the central area.