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. 2019 Jul 10;5(7):eaau1218. doi: 10.1126/sciadv.aau1218

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Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 3 — (A and B) Bulk soil Q₁₀ with macro and micro. (C and D) Active pool Q₁₀ with macro and micro. (E and F) Slow pool Q₁₀ with macro and micro. Macro refers to the percentage of soil C stored in macroaggregates (250 to 2000 μm), and micro denotes the percentage in microaggregates (53 to 250 μm). Red circles represent samples in the topsoil (n = 9), and blue circles represent samples in the subsoil (n = 9). r² is the proportion of variance explained. The insets show the depth-associated variations of C distribution in macroaggregates and microaggregates, respectively. Error bars denote SE (n = 9). *P < 0.01, significant difference between the two soil depths.