Carbon and health implications of trade restrictions

Lin, J., Du, M., Chen, L., Feng, K., Liu, Y., V. Martin, R., Wang, J., Ni, R., Zhao, Y., Kong, H., Weng, H., Liu, M., van Donkelaar, A., Liu, Q., & Hubacek, K. (2019). Carbon and health implications of trade restrictions. Nature Communications 10 (1) e4947. 10.1038/s41467-019-12890-3.

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Abstract

In a globalized economy, production of goods can be disrupted by trade disputes. Yet the resulting impacts on carbon dioxide emissions and ambient particulate matter (PM2.5) related premature mortality are unclear. Here we show that in contrast to a free trade world, with the emission intensity in each sector unchanged, an extremely anti-trade scenario with current tariffs plus an additional 25% tariff on each traded product would reduce the global export volume by 32.5%, gross domestic product by 9.0%, carbon dioxide by 6.3%, and PM2.5-related mortality by 4.1%. The respective impacts would be substantial for the United States, Western Europe and China. A freer trade scenario would increase global carbon dioxide emission and air pollution due to higher levels of production, especially in developing regions with relatively high emission intensities. Global collaborative actions to reduce emission intensities in developing regions could help achieve an economic-environmental win-win state through globalization.

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