Fig. 2
From: Role of linkage structures in supply chain for managing greenhouse gas emissions
Kernel structure matrices and their top 5 aggregated sectors in the years of a 1990, b 1995, c 2000, d 2005. The set number on the bars shows the number of aggregated sectors those are in the top 5 in each year. For plotting, values in the diagonal position and negative values are replaced with zero. 21 sector classifications aggregated from 379 sectors; 1. agriculture, forestry and fisheries; 2. metal mining; 3. ceramics and materials of earth and stones; 4. stone (non-ferrous stone); 5. coal, crude petroleum, and natural gas; 6. food and drink, fibers, and paper and pulp; 7. chemistry; 8. petroleum and coal products; 9. other commodities ; 10. cement; 11. other ceramic, stone, and clay products; 12. iron and steel; 13. machinery, equipment, and others; 14. transport vehicle; 15. other manufacturing; 16. construction; 17. electricity, gas, and water; 18. commerce, finance, and real estate; 19. transport; 20. information and communications; 21. services