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Abstract
The purpose of this paper is to investigate the non-linear effect of education level on ecological footprint considering changes in population structure and per capita income. The results show an inhibitory effect for the level of education on increases in ecological footprint. In high-income countries, this inhibitory effect is non-linear. The inhibitory effect of education level on ecological footprint increases with increases in education level. In addition, population structure also has an inhibitory effect on the increase in ecological footprint. In both high-income and low-income countries, the inhibitory effect of population structure on the ecological footprint decreases when the population structure exceeds the threshold. However, there is a promotional effect of GDP per capita on the increase in ecological footprint. And the threshold regression results show that this promotional effect is linear in all income groups. Finally, this study suggests that countries should develop environmental sustainability policies according to the threshold range in which their education level, population structure, and per capita income are located.
Disclosure statement
No potential conflict of interest was reported by the author(s).