Free-air concentration enrichment

<p>Free-Air Carbon dioxide Enrichment (FACE) is a method used by <a href="/facts/Ecology/YE8upuJU">ecologists</a> and <a href="/facts/Plant_biology/PaIRoxnb">plant biologists</a> that raises the concentration of CO2 in a specified area and allows the response of plant growth to be measured. Experiments using FACE are required because most studies looking at the effect of elevated CO2 concentrations have been conducted in labs and where there are many missing factors including plant competition. Measuring the effect of elevated CO2 using FACE is a more natural way of estimating how plant growth will change in the future as the <a href="/facts/Carbon_dioxide_in_the_Earth%2527s_atmosphere/h6A4HSzy">CO2 concentration</a> rises in the atmosphere. FACE also allows the effect of elevated CO2 on plants that cannot be grown in small spaces (<a href="/facts/Tree/HVVn3srN">trees</a> for example) to be measured. However, FACE experiments carry significantly higher costs relative to greenhouse experiments.
</p>

Free-air concentration enrichment open-in-new

Free-air concentration enrichment