Rising carbon dioxide levels are good for plants—until the temperature increases
DOI: 10.1063/PT.5.0210113
Guardian : A common claim from those disputing the hazards of anthropogenic climate change is that rising carbon dioxide levels have led to increased global plant growth. There is some evidence supporting that claim. However, a new paper suggests that now that the global CO2 concentration has surpassed 400 ppm, the detrimental effects of rising temperatures will outweigh the benefits of further CO2 increases. Between 1998 and 2014, researchers at Stanford University grew 132 plots of common California flowers and grasses and varied the temperature, water, and CO2 and nitrogen levels. The results showed that plant growth increased with higher concentrations of nitrogen and decreased with rising temperatures. But beyond current global atmospheric levels, CO2 had no notable effect on plant growth.
