Carbon isotope ratios in belowground carbon cycle processes
Article Abstract:
Research indicates that a shift in plant and microbial contributions may be responsible for the progressive carbon isotope ratios observed in soil organic matter, rather than microbial fractionation or differential degradation of soil organic matter. The effects of time lags in research are also discussed, as the turnover rates of various components can result in different isotopic compositions.
Publication Name: Ecological Applications
Subject: Environmental issues
ISSN: 1051-0761
Year: 2000
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Age of soil organic matter and soil respiration: radiocarbon constraints on belowground C dynamics
Article Abstract:
Research indicates that the average predicted age for carbon dioxide produced via decomposition is less than the average age of carbon in soil organic matter. Radiocarbon measurements of bulk organic matter and heterotrophic respiration fluxes are biased toward longer carbon-cycle time scales.
Publication Name: Ecological Applications
Subject: Environmental issues
ISSN: 1051-0761
Year: 2000
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The vertical distribution of soil organic carbon and its relation to climate and vegetation
Article Abstract:
Research indicates that the distribution of soil organic carbon by depth is influenced by vertical root distribution paired with shoot/root allocations. The implications of this finding to carbon sequestration strategies and vegetation change are also discussed.
Publication Name: Ecological Applications
Subject: Environmental issues
ISSN: 1051-0761
Year: 2000
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