Nature Climate Change, Published online: 12 August 2024; doi:10.1038/s41558-024-02100-4
A free-air CO2 enrichment experiment exposed a 180-year-old oak forest in central England to elevated atmospheric CO2 concentrations for 7 years. Increases in wood production and net primary productivity were observed in response to this CO2 enrichment, contrary to expectations that such responses are limited to young tree plantations.