Earth science

  • Carbon sequestration and storage in mangroves, salt marshes and seagrass meadows is an essential coastal ‘blue carbon’ ecosystem
    service for climate change mitigation. Here we offer a comprehensive, global and spatially explicit economic assessment
    of carbon sequestration and storage in three coastal ecosystem types at the global and national levels. We propose a new
    approach based on the country-specific social cost of carbon that allows us to calculate each country’s contribution to, and
    redistribution of, global blue carbon wealth. Globally, coastal ecosystems contribute a mean ± s.e.m. of US$190.67 ± 30 bn yr−1
    to blue carbon wealth. The three countries generating the largest positive net blue wealth contribution for other countries are
    Australia, Indonesia and Cuba, with Australia alone generating a positive net benefit of US$22.8 ± 3.8 bn yr−1 for the rest of the
    world through coastal ecosystem carbon sequestration and storage in its territory.

  • Kiel Institute for the World Economy, Kiel, Germany



    Copyright: © The Author(s) 2021

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