This study investigates the role of urbanization in carbon dioxide (CO₂) emission in the case of the Group of Seven (G7) countries, except Germany. The conventional environmental Kuznets curve (EKC) was revised by augmenting and controlling for urbanization for this purpose. The results of this study confirm the long-term effects of urbanization on CO₂ emission in the selected G7 countries. Only France and Italy seem to manage environmental issues when promoting urbanization; this is because urban development exerts negative effects on the climate levels in these two countries, while it generates positive impacts in the case of the other G7 countries. The inverted U-shaped and revised EKC is also successfully confirmed for only France and Italy among the others.

这项研究调查了七国集团（G7）国家（德国除外）中城市化在二氧化碳（CO ₂）排放中的作用。为此，对传统的环境库兹涅茨曲线（EKC）进行了修正，并通过增加和控制城市化来进行修正。这项研究的结果证实了某些G7国家中城市化对CO ₂排放的长期影响。促进城市化时，只有法国和意大利似乎在管理环境问题。这是因为城市发展对这两个国家的气候水平产生了负面影响，而对其他七国集团国家则产生了积极影响。倒U形和改型的EKC也仅在法国和意大利得到成功确认。