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820 SSSAJ: Volume 71: Number 3 MayJune 2007 Soil Sci. Soc. Am. J. 71:820828

Summary: 820 SSSAJ: Volume 71: Number 3 · May­June 2007
Soil Sci. Soc. Am. J. 71:820­828
Received 29 Aug. 2006.
*Corresponding author (rebecca.mcculley@uky.edu).
© Soil Science Society of America
677 S. Segoe Rd. Madison WI 53711 USA
All rights reserved. No part of this periodical may be reproduced or
transmitted in any form or by any means, electronic or mechanical,
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Permission for printing and for reprinting the material contained
herein has been obtained by the publisher.
Soil respiration is the total efflux of CO2 produced from soil
metabolic processes (Lundegardh, 1927), mainly micro-
bial decomposition of soil organic matter and root respiration
(Singh and Gupta, 1977). Thus, the abiotic and biotic factors
that influence microbial growth and activity and plant C alloca-
tion to roots exert significant control over SR rates (Hibbard et
al., 2005). Numerous studies have shown that climatic factors,


Source: Archer, Steven R. - Savanna/Woodland Ecology Lab., School of Natural Resources and the Environment, University of Arizona
Boutton, Thomas W. - Department of Ecosystem Science and Management, Texas A&M University


Collections: Environmental Sciences and Ecology