Outplanting Performance of the Bornean Tropical Indigenous Species Shorea macrophylla (de Vriese) P. S. Ashton in relation to Seedling Age
Table 1
Means and standard error of initial surface and subsurface soil physicochemical characteristics of the experimental planting sites at Sampadi Forest Reserve.
Soil depth/soil physicochemical properties
0–10 cm (surface soils)
30–40 cm (subsurface soils)
Mean ± SE
(Min–Max.)
Mean ± SE
(Min–Max.)
pH (H2O)
4.57 ± 0.02
(4.19–4.89)
4.77 ± 0.01
(4.67–4.92)
Total Ca
(g kg−1)
59.8 ± 1.1
(37.7–80.1)
33.7 ± 0.8
(14.3–42.4)
Total Nb
(g kg−1)
2.54 ± 0.05
(1.53–3.47)
0.85 ± 0.04
(0.42–1.39)
CECc
(cmolc kg−1)
18.6 ± 0.3
(10.4–23.2)
15.6 ± 0.4
(7.0–19.2)
Exch. Ca2+
(cmolc kg−1)
0.67 ± 0.07
(0.10–2.01)
0.17 ± 0.02
(0.01–0.41)
Exch. Mg2+
(cmolc kg−1)
0.69 ± 0.04
(0.24–1.36)
0.12 ± 0.01
(0.04–0.29)
Exch. K+
(cmolc kg−1)
0.20 ± 0.02
(0.01–0.57)
0.14 ± 0.02
(0.01–0.49)
Exch. Al3+
(cmolc kg−1)
2.77 ± 0.13
(1.33–4.69)
3.13 ± 0.09
(2.26–4.66)
Available P
(mg P kg−1)
12.9 ± 1.1
(0.2–33.4)
2.6 ± 0.3
(0.1–7.6)
Clay
(%)
51.8 ± 0.8
(28.0–60.2)
49.2 ± 1.0
(23.4–58.2)
Silt
(%)
41.5 ± 0.4
(32.4–48.3)
36.7 ± 0.5
(27.6–44.9)
Sand
(%)
6.7 ± 1.0
(0.5–39.7)
14.2 ± 1.3
(3.4–49.0)
Bulk density
(g mL−1)
0.86 ± 0.01
(0.72–1.04)
1.17 ± 0.02
(0.86–1.53)
Means ± standard error, aTotal C: total carbon; bTotal N: total nitrogen; cCEC: cation exchange capacity.
