Informing climate models with rapid chamber measurements of forest carbon uptake.

Models predicting ecosystem carbon dioxide (CO ) exchange under future climate change rely on relatively few real-world tests of their assumptions and outputs. Here, we demonstrate a rapid and cost-effective method to estimate CO exchange from intact vegetation patches under varying atmospheric CO concentrations We find that net ecosystem CO uptake (NEE) in a boreal forest rose linearly by 4.7 ± 0.