Embodied Energy Flow Network of Chinese Industries: A Complex Network Theory Based Analysis

This paper investigates the features of embodied energy flow network between Chinese industries to show the relationships between industries in the perspective of energy. Firstly we calculated embodied energy flow between each couple of industries based on ecological input-output table. Then we build 5 networks in the year of 1987, 1992, 1997, 2002 and 2007. After that, the features of these networks are analyzed based on complex network theory. The network scale, network density, weighted degree and betweenness centrality are utilized as indicators. Our result shows: The basic network features change little during research period. Industries that have most embodied energy flows changes from oil related industries to coal related industries. Two kinds of industries have the power to control other industries: industries with most weighted embodied flows and industries have close relationship with people's daily life.