Carbon dioxide production in the soil has long been regarded as a measure of biological activity. It has been suggested that oxygen absorption might give a more reliable measure of the total action of microorganisms than carbon dioxide production. Since the amount of oxygen consumed by aerobic organisms under constant environmental conditions bears a definite relation to the amount of carbon dioxide produced, it would seem that the ratio of carbon dioxide produced to oxygen consumed would show something concerning the nature of the organic matter of the soil, its composition and rate of decomposition and, therefore, be a better index of microbiological action than either alone.
Proceedings of the Iowa Academy of Science
©1933 Iowa Academy of Science, Inc.
Smith, F. B. and Brown, P. E.
"Oxygen Absorption and Carbon Dioxide Production in Soils,"
Proceedings of the Iowa Academy of Science, 40(1), 74-75.
Available at: https://scholarworks.uni.edu/pias/vol40/iss1/11