Priming and substrate quality interactions in soil organic matter models
Interactions between different qualities of soil organic matter (SOM) affecting their turnover are rarely represented in models. In this study, we propose three mathematical strategies at different levels of abstraction to represent those interactions. By implementing these strategies into the Intro...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2013-03-01
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| Series: | Biogeosciences |
| Online Access: | http://www.biogeosciences.net/10/2089/2013/bg-10-2089-2013.pdf |
| _version_ | 1811192080445210624 |
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| author | T. Wutzler M. Reichstein |
| author_facet | T. Wutzler M. Reichstein |
| author_sort | T. Wutzler |
| collection | DOAJ |
| description | Interactions between different qualities of soil organic matter (SOM) affecting their turnover are rarely represented in models. In this study, we propose three mathematical strategies at different levels of abstraction to represent those interactions. By implementing these strategies into the Introductory Carbon Balance Model (ICBM) and applying them to several scenarios of litter input, we show that the different levels of abstraction are applicable at different timescales. We present a simple one-parameter equation of substrate limitation that can straightforwardly be implemented into other models of SOM dynamics at decadal timescale. The study demonstrates how substrate quality interactions can explain patterns of priming effects, accelerate turnover in FACE experiments, and the slowdown of decomposition in long-term bare fallow experiments as an effect of energy limitation of microbial biomass. The mechanisms of those interactions need to be further scrutinized empirically for a more complete understanding. Overall, substrate quality interactions contribute to both understanding and quantitatively modelling SOM dynamics. |
| first_indexed | 2024-04-11T23:45:42Z |
| format | Article |
| id | doaj.art-af0f30a6beab4a0e862691a13cf9acf7 |
| institution | Directory Open Access Journal |
| issn | 1726-4170 1726-4189 |
| language | English |
| last_indexed | 2024-04-11T23:45:42Z |
| publishDate | 2013-03-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Biogeosciences |
| spelling | doaj.art-af0f30a6beab4a0e862691a13cf9acf72022-12-22T03:56:38ZengCopernicus PublicationsBiogeosciences1726-41701726-41892013-03-011032089210310.5194/bg-10-2089-2013Priming and substrate quality interactions in soil organic matter modelsT. WutzlerM. ReichsteinInteractions between different qualities of soil organic matter (SOM) affecting their turnover are rarely represented in models. In this study, we propose three mathematical strategies at different levels of abstraction to represent those interactions. By implementing these strategies into the Introductory Carbon Balance Model (ICBM) and applying them to several scenarios of litter input, we show that the different levels of abstraction are applicable at different timescales. We present a simple one-parameter equation of substrate limitation that can straightforwardly be implemented into other models of SOM dynamics at decadal timescale. The study demonstrates how substrate quality interactions can explain patterns of priming effects, accelerate turnover in FACE experiments, and the slowdown of decomposition in long-term bare fallow experiments as an effect of energy limitation of microbial biomass. The mechanisms of those interactions need to be further scrutinized empirically for a more complete understanding. Overall, substrate quality interactions contribute to both understanding and quantitatively modelling SOM dynamics.http://www.biogeosciences.net/10/2089/2013/bg-10-2089-2013.pdf |
| spellingShingle | T. Wutzler M. Reichstein Priming and substrate quality interactions in soil organic matter models Biogeosciences |
| title | Priming and substrate quality interactions in soil organic matter models |
| title_full | Priming and substrate quality interactions in soil organic matter models |
| title_fullStr | Priming and substrate quality interactions in soil organic matter models |
| title_full_unstemmed | Priming and substrate quality interactions in soil organic matter models |
| title_short | Priming and substrate quality interactions in soil organic matter models |
| title_sort | priming and substrate quality interactions in soil organic matter models |
| url | http://www.biogeosciences.net/10/2089/2013/bg-10-2089-2013.pdf |
| work_keys_str_mv | AT twutzler primingandsubstratequalityinteractionsinsoilorganicmattermodels AT mreichstein primingandsubstratequalityinteractionsinsoilorganicmattermodels |