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Mapping manufactured capital in mainland China with harmonized night‐time light images between 1992 and 2018

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  • Lulu Song
  • Yuanyi Huang
  • Yupeng Liu
  • Nan Li
  • Wei‐Qiang Chen

Abstract

The manufactured capital, usually denoted as material stocks from an industrial ecology perspective, has thus far received wide attention in sustainability and circularity science. Sustainable resource management should be rooted in detailed knowledge of manufactured capital accumulation in society at a high spatial resolution. Previous studies demonstrated that night‐time light (NTL) data provide a great opportunity for monitoring material stocks dynamics at a higher spatial resolution on the regional and global scale. However, the potential of historical–geographical refined material stocks has not been fully analyzed and explored because of the inconsistency of NTL images detected by the different satellites. In this study, based on a new set of material stocks data in China and harmonized NTL images (1992–2018), we map the national stocks of 13 bulk materials (including cement, gravel, wood, brick, sand, asphalt, glass, lime, plastic, rubber, copper, aluminum, and steel) at a 1 × 1 km resolution from 1992 to 2018. The results find that the total material stocks increased from 190,000 to 460,000 t/km2 between 1992 and 2018. Among the five end‐use sectors, buildings have the highest density of 430,000 t/km2, while domestic appliances have the lowest density of 140 t/km2. Four manufactured capital clusters, including the Yangtze River Delta, Pearl River Delta, Beijing–Tianjin–Hebei, and Chengdu–Chongqing agglomerations, possess 38% of the national total stocks in 2018, revealing an unbalanced distributed pattern of manufactured capital across China. Our results provide valuable support for policymakers and business decision‐makers on efficient resource management and urban mining.

Suggested Citation

  • Lulu Song & Yuanyi Huang & Yupeng Liu & Nan Li & Wei‐Qiang Chen, 2024. "Mapping manufactured capital in mainland China with harmonized night‐time light images between 1992 and 2018," Journal of Industrial Ecology, Yale University, vol. 28(5), pages 1103-1116, October.
  • Handle: RePEc:bla:inecol:v:28:y:2024:i:5:p:1103-1116
    DOI: 10.1111/jiec.13525
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