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Carbon Dioxide Evolution from the Floor of an Oak‐Hickory Forest
Author(s) -
Garrett H. E.,
Cox G. S.
Publication year - 1973
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1973.03615995003700040045x
Subject(s) - carbon dioxide , limiting , environmental science , forest floor , spring (device) , soil water , moisture , soil respiration , water content , atmospheric sciences , carbon dioxide in earth's atmosphere , hydrology (agriculture) , agronomy , zoology , ecology , soil science , geology , biology , geography , meteorology , mechanical engineering , geotechnical engineering , engineering
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/m 2 per hour while maximum winter rates were 0.18 g/m 2 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 CO 2 at the lower slope position was 20% greater on a mean annual basis than at the middle and upper slope positions. Most of the CO 2 evolved from the forest floor is considered to be contributed by root respiration and associated microorganisms.