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Keeping the global consumption within the planetary boundaries
Peipei Tian1, Honglin Zhong1, Xiangjie Chen2
1Institute of Blue and Green Development, Shandong University, Weihai, China.
Nature
|November 13, 2024
Summary
The top 20% of global consumers drive most environmental impacts, exceeding planetary boundaries. Shifting their consumption patterns could significantly reduce ecological pressure and restore Earth
Area of Science:
- Environmental Science
- Ecological Economics
- Sustainability Studies
Background:
- Global environmental impacts vary significantly between nations.
- Attributing specific environmental responsibilities to consumption groups is complex.
- Planetary boundaries represent critical ecological thresholds.
Purpose of the Study:
- To investigate the distribution of environmental footprints across consumption groups globally.
- To assess the impact of consumption expenditures on transgressing planetary boundaries.
- To identify high-expenditure consumers as key actors in mitigation strategies.
Main Methods:
- Utilized an expenditure database covering 201 consumption groups in 168 countries.
- Analyzed 6 environmental footprint indicators.
- Quantified the contribution of consumption to planetary boundary transgressions.
Main Results:
- The top 10% and 20% of consumers account for 31-67% and 51-91% of planetary boundary transgressions, respectively.
- Targeting the top 20% for consumption changes can reduce environmental pressure by 25-53%.
- Focusing on food and services sectors within high-expenditure groups can address land-system change and biosphere integrity boundaries.
Conclusions:
- High-expenditure consumers disproportionately contribute to environmental degradation.
- Targeted consumption changes among the wealthiest individuals are crucial for mitigating planetary boundary transgressions.
- Policy and individual actions should prioritize the consumption patterns of top consumers for effective environmental stewardship.
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