Inequality in Carbon Emissions Across Regions

Inequality in carbon emissions across regions reflects profound disparities in both the sources and consequences of greenhouse-gas release. Wealthier nations and regions typically exhibit higher per-capita emissions, driven by energy-intensive industries, consumption patterns and infrastructure choices, while lower-income areas often bear disproportionate climate burdens despite contributing less to global warming. Within countries, urban corridors and industrial hubs can register markedly greater emissions than rural or less-developed provinces. Underlying factors include economic structure, energy mix, technology access, trade flows and policy frameworks. Such disparities exacerbate climate injustice, influence negotiation stances in international forums and determine the effectiveness of mitigation measures at national and subnational levels.

Research from Nature Portfolio

Recent studies have quantified the outsized role of the wealthiest segments in driving global warming and climate extremes. An emulator-based analysis linking consumption- and investment-attributable emissions shows that the top decile of earners has generated two-thirds of present-day warming, with the top one per cent responsible for a fifth, thereby accentuating regional heat extremes and droughts. Wealth disparities in major emitters such as the United States and China amplify these outcomes, underlining the need for equity-centred mitigation strategies.

Analyses of per-capita CO₂ emissions in one large emerging economy reveal a steep rise in inter-provincial inequality over two decades. A two-sector decomposition attributes over 90 per cent of the widening gap to variations in production activities rather than household use. Key drivers include disparities in energy efficiency, output levels and industrial structure, signalling that responsibility-sharing mechanisms must focus on decarbonising industry and aligning regional development with low-carbon pathways.

Inequality in Carbon Emissions Across Regions publication trend

The graph below shows the total number of articles in inequality in carbon emissions across regions across all publications each year (not limited to Nature Index journals).

Technical terms

Greenhouse-gas (GHG) emissions: Release of gases, notably carbon dioxide and methane, that trap heat in the atmosphere and drive climate change.

Per-capita emissions: Average emissions calculated by dividing total emissions of a region or group by its population size.

Theil index: A statistical measure of inequality that decomposes total disparity into within-group and between-group components.

Emulator-based framework: A computational approach that mimics complex climate models to estimate impacts of emissions on regional climate extremes.

References

1. High-income groups disproportionately contribute to climate extremes worldwide. Nature Climate Change (2025).
2. Increased inequalities of per capita CO2 emissions in China. Scientific Reports (2021).
3. A blessing or a curse? Can digital economy development narrow carbon inequality in China?. Carbon Neutrality (2023).
4. The nexus of climate policy uncertainty, renewable energy and energy inequality under income disparities. Energy Strategy Reviews (2024).