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Soil Science Society of America Journal Abstract -

Carbon Dioxide Evolution from the Floor of an Oak-Hickory Forest1


This article in SSSAJ

  1. Vol. 37 No. 4, p. 641-644
    Received: Oct 20, 1972
    Accepted: Apr 16, 1973

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  1. H. E. Garrett and
  2. G. S. Cox2



Carbon dioxide evolution from the floor of an oak-hickory (Quercus sp.) (Carya sp.) forest was studied. The influence of soil temperature, soil moisture, and position on a west-facing slope was evaluated on a seasonal basis. Highest evolution rates were observed during the summer and declined in the order of fall, spring, and winter. Maximum summer rates were 1.20 g/m2 per hour while maximum winter rates were 0.18 g/m2 per hour. Temperature was found to have its greatest limiting effect during the winter and spring while moisture was most limiting during the fall. Release of CO2 at the lower slope position was 20% greater on a mean annual basis than at the middle and upper slope positions. Most of the CO2 evolved from the forest floor is considered to be contributed by root respiration and associated microorganisms.

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