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Carbon allocation and carbon isotope fluxes in the plant-soil-atmosphere continuum: a review

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Academic year: 2017

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Fig. 1. Summary of the plant-related processes that potentially in- in-fluence the carbon isotopic composition of organic matter and CO 2
Fig. 2. Seasonal changes in time lag measured by tracing variations in δ 13 C at natural abundance level (Wingate et al., 2010; Kuptz et al., 2011a) or after 13 CO 2 pulse-labeling (Plain et al., 2009) in soil respiration and trunk respiration (at 1 m heig
Fig. 3. Estimates of apparent fractionation associated with soil mi- mi-crobial respiration determined by different experimental approaches (grey bars: from C 3 plants; dark grey bars: Rayleigh distillation methods, black bars: C 4 plants)
Fig. 4. Overview of processes and factors determining the isotope signature of C pools and fluxes in space and time in the plant-soil- plant-soil-atmosphere continuum

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