从城市到城市群:京津冀物质代谢特征及影响因素

With continuous urbanization and the integration strategy, the managers urgently need to meet the ecological-resource-environmental challenges, so as to provide strong material support for eco-social development. This study took the Beijing-Tianjin-Hebei region and its cities as example, calculated and analyzed the material consumption status and change trends of the two scales from 2000 to 2017, futhermore identified and compared the main material types, sectors and important drivers. The results showed that during the study period, the material consumption of the Beijing-Tianjin-Hebei region increased overall, mainly came from non-metallic minerals (over 34.2%) from perspective of material types and manufacturing sector (more than 58%) from the perspective of sectors, and economy size effect was the primary driver (over 50%). The cities, overall, showed similar trends as the region. The material consumptions increased in general, nearly all cities′ material consumptions were pulled up by non-metallic materials and manufacturing sector, while economy size presented positive effects. Differently, the consumption intensity effect had more significant inhibitory effect on the consumption growth of the region than each city, and the industrial structure effects on the urban scale were more prominent than the others. The results clarify the metabolism status of the Beijing-Tianjin-Hebei region and its cities to a cer tain extent, which can lay a foundation for optimizing resource efficiency utilization and reallocation, and can provide a practical and feasible impact for the ecological management and regulation in the region.