What can the Glasgow Declaration on Forests bring to global emission reduction?

The Glasgow Declaration on Forests signed at the recent UN Climate Change Conference (COP 26) committed to halting forest loss by 2030. 141 countries and regions, collectively covering over 90% of global forest, endorsed this declaration. Avoiding forest loss can generally contribute to climate change mitigation; however, the impacts of the declaration on global carbon dioxide (CO2) emission reduction are still unclear. Here we show that the Glasgow Declaration, if implemented fully and in a timely fashion, could reduce 123 Gt CO2 of emission from 2021 to 2050.