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The carbon quality-temperature hypothesis does not consistently predict temperature sensitivity of soil organic matter mineralization in soils from two manipulative ecosystem experiments

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Author(s)
Bowden, Richard D. (Rich)
Reynolds, Lorien L.
Lajtha, Kate
Johnson, Bart R.
Bridgham, Scott D.
Date Issued
October 28, 2017
Abstract
The temperature sensitivity of soil organic matter (SOM) decomposition is a source of uncertainty in models of soil-climate feedbacks. However, empirical studies have given contradictory results concerning the temperature response of SOM fractions, even as the understanding of the chemical nature of SOM is evolving. The carbon-quality temperature (CQT) hypothesis states that more ‘recalcitrant’ SOM should have higher temperature sensitivity. Incubation studies have often shown a negative correlation between soil respiration rates and temperature sensitivity. However, there have been important exceptions to these results which challenge the assumption that older SOM is necessarily more chemically complex.
Journal
Biogeochemistry
Department
Environmental Science / Studies
Citation
Reynolds, L.L., Lajtha, K., Bowden, R.D. et al. (2017). The carbon quality-temperature hypothesis does not consistently predict temperature sensitivity of soil organic matter mineralization in soils from two manipulative ecosystem experiments. Biogeochemistry 136: 249-260. Doi: 10.1007/s10533-017-0384-z
Publisher
Springer
Version of Article
Published article
Final manuscript post peer review, without publisher's formatting or copy editing (postprint)
Embargo
Post-prints of this article will be available for viewing to the public after 10/28/2018.
DOI
10.1007/s10533-017-0384-z
Rights
This article is published and restricted. Copyright is retained by publisher. Contact the author or publisher for further use of this material. Post-prints are available for viewing after a 12 month embargo.
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