Fig. 4 | Scientific Reports

Fig. 4

From: A 2-year pure biochar addition enhances soil carbon sequestration and reduces aggregate stability in understory conditions

Fig. 4

Organic carbon contribution rates in soil aggregates of differing granularities under distinct treatments. Treatments include B0 (Control, CK), B1 (Biochar at 15 t ha–1), B2 (Biochar at 30 t ha–1), and B3 (Biochar at 45 t ha–1). The horizontal axis lists the six soil aggregate particle size ranges, and the vertical axis indicates the organic carbon contribution rate for each size range within each treatment. Different lowercase letters signal significant differences between treatments (p < 0.05).

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