Although many ecology textbooks
reveal that the vast majority of oxygen-producing organisms
in the world are aquatic, oxygen production is one of the most
commonly cited benefits of urban trees. Common questions
related to the benefits of urban forests are directed toward
understanding the amount of oxygen produced by urban forests,
often in relation to the amount of oxygen consumed by
humans. It is well known that trees produce oxygen, but how
significant is the oxygen production benefit provided by urban
forests?