School of Management Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, China.
Business School, Shandong University of Technology, Zibo, 255000, Shandong, China.
Environ Sci Pollut Res Int. 2022 Sep;29(41):62579-62591. doi: 10.1007/s11356-022-20004-8. Epub 2022 Apr 11.
Continuing economic progress with less environmental damage and achieving a sustainable environment require switching from fossil fuels to green energy. However, alleviating environmental damage of growth has become a major challenge for BRICS where economic progress amidst rising urbanization pollutes the environment. In this context, the fight against climate change and actions towards environmental sustainability are greatly affected by rising economic policy uncertainty. Hence, this study assesses the role of green energy, urbanization, and economic growth in CO2 emissions in the presence of economic policy uncertainty in BRICS (excluding South Africa) from 1997 to 2020. The study used the cross-sectionally augmented auto-regressive distributive lag technique for revealing the short- and long-run effects of the analyzed variables on environmental quality. The empirical evidence suggested that the environmental Kuznets curve exists according to the recent framework of Narayan and Narayan Energy Policy 38:661-666, (2010) because even though economic growth increases CO2 emissions, its long-run effect is less than the short-run effect. Economic policy uncertainty boosts CO2 not only in the short-run but also in the long-run, evidencing that a sustainable environment requires decreasing the levels of policy uncertainty. For BRICS, switching towards green energy is a vital option to decrease environmental deterioration owing to the negative connection between green energy and CO2. The findings indicated that rapid urbanization is among the causes of high CO2. Furthermore, economic policy uncertainty influences both green energy and economic growth levels. Finally, policies are recommended to mitigate environmental deterioration.
在环境破坏较小的情况下实现经济持续增长并实现可持续环境，需要将燃料从化石燃料转换为绿色能源。然而，缓解经济增长带来的环境破坏已成为金砖国家（不包括南非）的主要挑战，因为城市化进程中的经济增长污染了环境。在这种情况下，气候变化的斗争和环境可持续性的行动受到经济政策不确定性上升的极大影响。因此，本研究评估了绿色能源、城市化和经济增长在金砖国家（不包括南非） 1997 年至 2020 年期间经济政策不确定性存在情况下对 CO2 排放的作用。该研究使用了横截面增强自回归分布滞后技术来揭示分析变量对环境质量的短期和长期影响。实证证据表明，根据 Narayan 和 Narayan 的最新框架，环境库兹涅茨曲线存在，因为尽管经济增长会增加 CO2 排放，但它的长期效应小于短期效应。经济政策不确定性不仅在短期内而且在长期内都会增加 CO2，这表明可持续环境需要降低政策不确定性水平。对于金砖国家来说，由于绿色能源与 CO2 之间存在负相关关系，因此向绿色能源转型是减少环境恶化的重要选择。研究结果表明，快速城市化是 CO2 含量高的原因之一。此外，经济政策不确定性会影响绿色能源和经济增长水平。最后，建议采取政策来减轻环境恶化。
