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Forest Ecosystems

Table 2 Weight of particulate organic matter (POM 4000–50 μm) fractions at year 5 of the second rotation (R2Y5)

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

POM fraction weight /Stands

100A

50A50E

100E

After fractionation of 20 g of soil:

 cPOM

0.14 (± 0.01) a

0.18 (± 0.01) a

0.19 (± 0.03) a

 fPOM

0.35 (± 0.02) a

0.39 (± 0.02) a

0.40 (± 0.03) a

 OMF

2.01 (± 0.06) a

1.61 (± 0.17) a

1.81 (± 0.07) a

In g per kg of soil:

 cPOM

6.87 (± 0.52) a

8.93 (± 0.47) a

9.47 (± 1.42) a

 fPOM

17.71 (± 1.01) a

19.53 (± 0.28) a

19.77 (± 1.42) a

 OMF

100.7 (± 3.2) a

88.7 (± 1.6) a

90.3 (± 3.7) a

  1. 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). Different letters indicate significant differences at P = 0.05 between stand types at R2Y5
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