Title: Carbon Dioxide Concentration of the Atmosphere Above Illinois Forest and Grassland
Abstract: The statements. are commonly made in biological text books and lectures tnat the carbon dioxide content of the air approximates .03 to .04% and that carbon dioxide is the limiting factor in photosynthesis. These generalizations are basically sound and are scientifically justifiable, but their unqualified acceptance may lead to a dogmatic assurance that they are always true. Actually, the carbon dioxide content of the air varies at different levels and the traditional value of .03-.04%o for carbon dioxide concentration is an average; the carbon dioxide content of the air infrequently falls below .03%, but often exceeds .04%. Under conditions of low light intensity and a relatively high carbon dioxide concentration of the air, light intensity, rather than carbon dioxide concentration, becomes the limiting factor in photosynthesis.
Publication Year: 1948
Publication Date: 1948-01-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 19
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot