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Published byCaitlin Page Modified over 8 years ago
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Age effects of annual carbon fluxes: Ongoing synthesis work
Jim Tang Institute of Plant Biology and Conservation Chicago Botanic Garden
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How do GPP and R change with age?
A fundamental theory in ecological succession Model A: modified from Odum 1967 Model B: modified from Ryan et al. 1997
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How do GPP and R change with age?
We are not able to quantify the changes of GPP and R with age. Therefore, most of ecosystem carbon models are not able to include age as a driving variable.
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ChEAS sites More clearcut and wetland sites?
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NEE, GEP and R vs. age in ChEAS sites
data
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NEE/GEP (CUE) and WUE vs. age in ChEAS sites
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Global context
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Global GPP and NPP vs. age
0.95 quantile regression Data source: Sebastiaan et al. 2007
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Global GPP and NPP vs. temperature
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Global GPP and NPP vs. precipitation
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How do GPP and R change with age?
A fundamental theory in ecological succession Model A: modified from Odum 1967 Model B: modified from Ryan et al. 1997
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