Coastal and marine areas
Global environmental issues
Stratospheric ozone depletion
Human vulnerability to extreme natural events
Unsustainable use of living marine resources
Sustainable water use
Access to improved water supply and sanitation
International environmental governance
Energy use per US$1,000 GDP Total carbon dioxide emissions Total carbon dioxide emissions per capita Glacier mass balance
Consumption of chlorofluorocarbons
Number of people killed Number of people affected
Proportion of land area covered by forest
Number of threatened animal species Number of threatened plant species
Ratio of area protected to maintain biological diversity to surface area
Catch of living marine resources
Per capita water use
Water use as a percentage of quantity of annual renewable water resources
Population with access to improved water supply
Number of parties to multilateral environmental agreements substantial lack of environmental data and information, which limits our ability to monitor developments and adequately show trends. The data gap will persist for some time and must be addressed through improved environmental monitoring, data collection, and compilation of indicators and indices at different geographic scales.
Thus, the use of indicators such as the GEO core set should be seen as a process of continuous development, not just a one-time exercise. A regular assessment of the indicators used, their relevance for and impact on policymakers and the wider public, and their continuous adjustment and updating to reflect emerging issues, better data, and new challenges and insights must be implemented in parallel.
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