Developing a Global Commons Stewardship Index: a comprehensive index that compares countries' environmental impacts and responsibilities, and thus encourage action

  • SDG7 Ensure access to affordable, reliable, sustainable and modern energy for all
  • SDG12 Ensure sustainable consumption and production patterns
  • SDG13 Take urgent action to combat climate change and its impacts
  • SDG14 Conserve and sustainably use the oceans, seas and marine resources for sustainable development
  • SDG15 Protect, restore and promote sustainable use of terrestrial ecosystems, sustainably manage forests, combat desertification, and halt and reverse land degradation and halt biodiversity loss
Naoko Ishii
Institute for Future Initiatives
Professor Center for Global Commons, UTokyo Director
  • This is a comprehensive index that quantitatively evaluates the environmental impact of each country on key elements that control and stabilize the global environmental system (the global commons), such as climate change, biodiversity, and land use, as well as the efforts to improve these elements to achieve future global targets. The goal is to stimulate international policy discussions and to analyze, evaluate and recommend policies.
  • In the 2021 edition, 99 countries and the EU were assessed based on 33 indicators, and each country's trajectory toward the 2030/2050 climate goals was newly assessed. It became clear that most countries will not be able to achieve the 2030/2050 targets if the current status quo is maintained.
Results for G20 countries - 2021 edition

Related links

Research collaborators

  • Zach Wendling, UN Sustainable Development Solutions Network (UN SDSN)
  • Guillaume Lafortune, UN Sustainable Development Solutions Network (UN SDSN)
  • Daniel Esty, Professor, Yale School of the Environment and Yale Law School, USA
  • Reed Miller, Researcher, Yale School of the Environment, USA
  • Akiyuki Kawasaki, Project Professor, Center for Global Commons, UTokyo

Related publications

Lafortune, G., Wendling, Z.A., Miller, R., Schmidt-Traub, G., Esty, D., Woelm, F., Baez, C., Ishii, N., Kawasaki, A. (2021) Measuring countries’ impacts on the global commons: A new approach based on production and consumption based accounting. Understanding the Spillovers and Transboundary Impacts of Public Policies: Implementing the 2030 Agenda for More Resilient Societies [eds. OECD/EC-JRC], OECD Publishing, Paris, pp.167-191.


  • Akiyuki Kawasaki
  • Tel: +81-3-5841-1550
  • Email: kawasaki[at]
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