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Spatial and Temporal Variations in Carbon Dioxide Concentrations in an Oak-Hickory Forest Ravine

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Seasonal, diurnal, and spatial variations in the concentration of carbon dioxide within an oak-hickory forest ravine were determined. CO2 evolution from the forest floor was also measured. Mean CO2 concentrations reached a maximum in spring and a minimum in summer. Maximum evolution of CO2 from the forest floor occurred in summer and the minimum in winter. The upper level of the main canopy and the crowns of the understory trees acted as CO2 sinks and the forest floor, the lower level of the main canopy, and the atmosphere above the stand acted as CO2 sources. During the summer, photosynthesis reduced the daily mean CO2 concentration within the canopy well below the concentration of the atmosphere above the forest. During other seasons higher concentrations of CO2 normally occurred within the stand than in the atmosphere above. During the growing season nighttime CO2 levels were higher in the ravine bottom than on adjacent slopes. Forest Sci. 24:180-190.

Keywords: Carya sp; Quercus sp; Soil CO2; microclimate; photosynthesis; respiration

Document Type: Journal Article

Affiliations: Electronics Specialist in the School of Forestry, Fisheries and Wildlife, University of Missouri, Columbia

Publication date: 1978-06-01

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2015 Impact Factor: 1.702
    Ranking: 16 of 66 in forestry

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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