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Fig. 1 | Forest Ecosystems

Fig. 1

From: Soil organic matter quality along rotations in acacia and eucalypt plantations in the Congolese coastal plains

Fig. 1

Nitrogen (N) concentration (%) (a), C (b), sulphur (c) and phosphorus availability (d) in the bulk soil and particulate organic matter (POM 4000–50 μm) fractions at year 5 of the second rotation (R2Y5). 100A and 100E = pure acacia and eucalypt, respectively, while 50A50E = mixed-species (50% acacia and 50% eucalypt) stands. cPOM = coarse POM (4000–250 μm), fPOM = fine POM (250–50 μm) and OMF = organo-mineral fractions (< 50 μm). Vertical bars are the standard errors of three-block averages. Different letters indicate significant differences at P = 0.05 between stand types at R2Y5

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