2023 Volume 79 Issue 27 Article ID: 23-27012
Tropospheric ozone is known to have a negative impact on plant CO2 uptake. On the other hand, climate change mitigation generally lead to reductions in emissions of ozone precursors such as NOx, thereby reducing ozone concentrations. Howerver, ozone impacts on CO2 uptake by terrestrial ecosystems on by vegetation has not been interpreted in terms of climate change mitigation measures. In this study, we quantifies the ozone impact on Net Biome Production (NBP) under two scenarios, one is without any mitigation policy and the other is equivalent to 1.5 degree target. The results show that ozone impacts are reduced by mitigation measures. For all vegetation, the reduction effect was considered to be large enough, corresponding to 11%-44% of the global reduction in CO2 emissions from managed forests.On the other hand, the CO2 emission reductions from managed forests were expected to increase as the ozone impact was reduced, but the amount of change was considered to be small.
