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The Value of the World’s Ecosystem Services and Natural Capital

The authors estimated the economic value of 17 ecosystem services for 16 biomes, based on published studies and a few original calculations. For the entire biosphere, the value (most of which is outside the market) is estimated to be between $16 and 54 trillion/year (1997 U.S. dollars), with an average of $33 trillion/year. Because of the nature of the uncertainties, this must be considered a minimum estimate.

Key discussion points:

  • Ecosystem services provide an important portion of the total contribution to human welfare on this planet.
  • The estimated annual value of ecosystem services is US$16–54 trillion, with an estimated average of US$33 trillion. The real value is almost certainly much larger, even at the current margin. US$33 trillion is 1.8 times the current global GNP.
  • As natural capital and ecosystem services become more stressed and more ‘scarce’ in the future, we can only expect their value to increase.