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Metric
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Dimensions
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Formula
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Environmental Significance
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Total per capita inputs
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Metric tons/Capita
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Aggregate consumption of all materials classes and individual material classes per capita
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Benchmarking national resource use
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Input composition
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Fuel ratio
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Dimensionless
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Consumption ratio for coal:oil:natural gas
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CO2 emissions, cleanliness of the energy system
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Nonrenewable organics ratio
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Dimensionless
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Consumption quantity for nonrenewable organics/total hydrocarbon consumption
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Petrochemical pollution, character of solid waste
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Structural materials ratio
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Dimensionless
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Consumption ratio of metals, ceramics, and polymers in all finished products and structures
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Gross shifts in materials use, materials efficiency and cyclicity, mining and processing waste, energy use
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Agricultural ratios
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Dimensionless
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Consumption ratio of food to feed crops, rice and legume ratio to total agricultural produce
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Land use, methane emissions, nitrogen fixation rates
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Input intensities
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Intensity of use
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Million metric tons (MMT) of inputs/ $106 GDP
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Material consumption quantity for selected input materials/ GDP in constant dollars
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Relationship of resource use to economic activity
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Agricultural intensity
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Dimensionless
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Fertilizer, pesticide, and agricultural minerals consumption/Total crop production
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Materials efficiency, eutrophication of water bodies, topsoil erosion, chemical dissipation
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Decarbonization
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MMT of carbon inputs/$106 GDP
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Carbon inputs/GDP in constant dollars
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Relationship of carbon emissions to economic activity
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Recycling indices
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"Virginity" index
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Percentage
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Consumption of all virgin materials/Total material inputs
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Materials efficiency and cyclicity, mining and processing waste, energy use
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