Firm-level propagation of shocks through supply-chain networks

Hiroyasu Inoue, Yasuyuki Todo

研究成果: Article査読

26 被引用数 (Scopus)

抄録

Social and economic networks can be a channel of negative shocks and thus deteriorate resilience and sustainability in societies. This study focuses on supply chains, or supplier–customer networks of firms and examines how these supply chains enable production losses caused by natural disasters to propagate and persist in regions not directly affected by the disaster. We apply an agent-based model to the actual supply chains of nearly one million firms in Japan to estimate the direct and indirect effects of the 2011 Great East Japan earthquake. We then employ the same model to predict the effect of the Nankai Trough earthquake, a mega earthquake predicted to hit major industrial cities in Japan in the near future. We find that the indirect effects of the disasters on production due to propagation (10.6% of gross domestic product in the case of the Nankai earthquake) are substantially larger than their direct effects (0.5%). Our simulation analyses to compare the actual network with hypothetical networks suggest that these indirect effects are more prominent and persistent when supply chains are characterized by scale-free properties, difficulty in substitution among intermediate products, and complex cycles in networks.

本文言語English
ページ(範囲)841-847
ページ数7
ジャーナルNature Sustainability
2
9
DOI
出版ステータスPublished - 2019 9 1

ASJC Scopus subject areas

  • 地球変動および惑星変動
  • 食品科学
  • 地理、計画および開発
  • 生態学
  • 再生可能エネルギー、持続可能性、環境
  • 都市研究
  • 自然保全および景観保全
  • 管理、モニタリング、政策と法律

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