Table 3 Soil profile analyses

From: Effects of Quercus rubra L. on soil properties and humus forms in 50-year-old and 80-year-old forest stands of Lombardy plain

Profiles and horizons pHw pHKCl Org. C (g kg−1) Total N (g kg−1) C:N Sand
2–0.05 mm (g kg−1)
Silt 0.05–0.002 mm (g kg−1) Clay < 0.002 mm (g kg−1) Text. class CEC (cmol(+) kg−1) Exchangeable cations (cmol(+) kg−1) BS (%) Available P (g kg−1)
Ca Mg Na K
BV (Bosco Vacaressino)
 MF (mixed forest)
  A (0–3 cm) 5.2 4.5 59 4.5 13.0 714 245 41 SL 17.9 11.57 1.62 0.08 0.36 76.1 9
  AB (3–27 cm) 5.2 4.3 23 1.9 12.2 726 241 33 SL 10.1 3.48 0.52 0.05 0.13 41.6 2
  BC (27–60 cm) 6.0 4.3 5 0.3 13.8 829 162 9 LS 5.1 2.90 0.53 0.12 0.08 70.9 1
 ROF (red oak forest)
  A (0–2 cm) 3.8 3.1 91 4.7 19.4 694 180 126 SL 24.6 2.03 0.49 0.01 0.05 10.5 20
  AB (2–13 cm) 4.3 3.6 22 1.5 15.0 657 311 32 SL 13.0 0.96 0.24 0.08 0.01 10.0 5
  Bw (13–33 cm) 5.1 4.0 7 0.5 14.8 627 286 87 SL 4.6 1.06 0.27 0.07 0.02 31.0 3
  BC (33–60 cm) 4.5 3.7 3 0.2 14.4 614 344 42 SL 2.8 0.95 0.24 0.06 0.02 45.4 1
BG (Bosco Ginestre)
 MF (mixed forest)
  A (0–9 cm) 4.5 3.6 77 5.4 14.4 698 261 41 SL 21.9 5.27 1.37 0.12 0.18 31.7 17.2
  AC (9–20 cm) 4.6 3.8 23 1.5 15.1 633 324 43 SL 10.9 1.30 0.49 0.30 0.13 20.4 4.7
  C1 (20–35 cm) 4.6 4.0 8 0.6 14.1 697 236 67 SL 5.8 1.18 0.50 0.34 0.11 36.8 1.7
  C2 (35–77 cm) 5.1 4.1 3 0.2 11.3 725 242 33 SL 3.7 1.46 0.88 0.36 0.13 75.9 1.1
  C3 (77–90 cm) 5.8 4.6 1 0.1 10.0 986 14 0 S 1.9 1.06 0.48 0.28 0.07 97.4 0.6
 ROF (red oak forest)
  A (0–10 cm) 4.6 3.9 29 1.8 15.6 705 264 31 SL 12.7 0.99 0.24 0.06 0.03 10.4 6.6
  AC (10–35 cm) 4.4 4.1 26 1.6 16.1 641 334 25 SL 14.3 0.87 0.21 0.14 0.04 8.8 5.3
  C1 (35–50 cm) 4.7 4.3 16 1.0 15.2 673 294 33 SL 3.9 0.90 0.43 0.12 0.02 38.1 2.6
  C2 (50–65 cm) 5.1 4.7 2 0.1 18.2 972 28 0 S 1.1 0.52 0.28 0.14 0.02 86.5 1.0
  1. SL, sandy loam; LS, loamy sand; S, sand