被撤回的出版物: A constraint on historic growth in global photosynthesis due to increasing CO2 (Retracted article. See vol. 606, pg. 420, 2022)

Article; Retracted Publication

关键词: VEGETATION LEAF-AREA;    WATER-USE EFFICIENCY;    LAND-SURFACE MODEL;    EMERGENT CONSTRAINTS;    NITROGEN-CYCLE;    HIGH-LATITUDES;    CARBON FLUXES;    PLANT-GROWTH;    ELEVATED CO2;    CLIMATE;   

DOI  :  10.1038/s41586-021-04096-9

来源: SCIE

【 摘 要 】

The global terrestrial carbon sink is increasing(1-3), offsetting roughly a third of anthropogenic CO2 released into the atmosphere each decade(1), and thus serving to slow(4) the growth of atmospheric CO2. It has been suggested that a CO2-induced long-term increase in global photosynthesis, a process known as CO2 fertilization, is responsible for a large proportion of the current terrestrial carbon sink(4-7). The estimated magnitude of the historic increase in photosynthesis as result of increasing atmospheric CO2 concentrations, however, differs by an order of magnitude between long-term proxies and terrestrial biosphere models(7-13). Here we quantify the historic effect of CO2 on global photosynthesis by identifying an emergent constraint(14-16) that combines terrestrial biosphere models with global carbon budget estimates. Our analysis suggests that CO2 fertilization increased global annual photosynthesis by 11.85 +/- 1.4%, or 13.98 +/- 1.63 petagrams carbon (mean +/- 95% confidence interval) between 1981 and 2020. Our results help resolve conflicting estimates of the historic sensitivity of global photosynthesis to CO2, and highlight the large impact anthropogenic emissions have had on ecosystems worldwide.

【 授权许可】

Free