科研之友
微信
新浪微博
Facebook
分享链接
摘要
The transfer of embodied exergy from one industry to another can be modeled using a network to help understand industrial characteristics and resource features of a specific area. In this paper, we build a weighted directed network of embodied exergy flows between Chinese industries based on the 135-sector input-output table from 2007. The density, connectedness and degree distribution are used to describe the overall performance of the network. The results show that the network has a low density and a high connectedness, indicating that the network has little influence on specific industries while individual industries have a strong impact on each other. The degree, weighted degree and betweenness centrality are used to determine the main industries in the network. Key industries are characterized by large degrees that play a key role in the network, of which the mining and washing of coal, the production and supply of electric and heat power, construction, and the rolling of steel have stronger influences on the network. Moreover, the production and supply of electric power and heat power, the manufacture of automobiles and farming are the intermediaries of the network. Finally, we use a block-modeling method to decompose the collection of 135 Chinese industries into seven communities. The community of coal-related industries is the core of the network, which transfers embodied exergy to every other community, whereas the community of steel-related industries is also important, forming the base of the rest of the network.
- 出版日期2015-12-24
- 单位中国科学院; 中国地质大学（北京）
