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Fig. 1 | Ecological Processes

Fig. 1

From: Nitrogen addition reduced carbon mineralization of aggregates in forest soils but enhanced in paddy soils in South China

Fig. 1

Rate of CO2-C evolution from macroaggregates, microaggregate, and the < 53-μm fraction during 3 months of incubation in a 100-mL incubation jar. A and B are the forest and paddy soils, respectively. The amount of CO2-C evolved from samples was determined using a Li-820 infrared gas analyzer. A non-linear asymptotic regression model was fitted to the CO2-C evolution rate of soil aggregates. BS, MA, MI, and MF denote bulk soil, macroaggregate (2000–250 μm), microaggregate (250–53 μm), and the < 53-μm fraction. N0 (the control), N1 (50 μg N g–1), N2 (100 μg N g–1), and N3 (150 μg N g–1)

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