Ecosystem Wellbeing Index (EWI)

The EWI is an broad measure of the state of the environment, with a fuller and more systematic treatment of national environmental conditions than other global indices such as the Ecological Footprint and the Environmental Sustainability Index. It is the average of:

  • Land. How well a country conserves the diversity of its natural land ecosystems and maintains the quality of the ecosystems that it develops.
  • Water. River conversion by dams. The water quality of drainage basins. Water withdrawal as a percentage of the national supply from precipitation. Inadequate data prevented coverage of the sea.
  • Water Air. Emissions of greenhouse gases and ozone depleting substances to the global atmosphere . City air quality.
  • Water Species and genes. How well a country conserves its wild species of mammals, birds, amphibians, reptiles, and higher plants, and the variety of its domesticated livestock breeds .
  • Water Resource use. How much energy a country consumes. The demands its agriculture, fishing, and timber sectors place on resources.


source: Wellbeing of Nations MethodologyCross-Ref: IUCN – World Conservation Union See also XlnkS58E

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