10 Carbon Stocks from Peat Swamp Forest and Oil Palm Plantation …
217
Table 10.4
(continued)
Ecosystem
Site
Sample depth (cm)
Carbon (%)
Nitrogen (%)
C/N ratio
Bulk density
(g/cm 3
)
Carbon mass
(Mg/ha)
Mean secondary forest
27
± 2
32.16
± 0.90 b
1.04
± 0.07 ab
34.79
± 2.95 b
0.30
± 0.02 b
336
± 57
Oil Palm
Plantation
OP1
0–15
45.79
± 1.86
1.10
± 0.10
43.77
± 3.56
0.46
± 0.05
326
± 38
15–30
47.35
± 5.10
0.80
± 0.09
59.83
± 3.14
0.47
± 0.07
219
± 56
545
± 94
OP3
0–15
50.80
± 2.30
1.33
± 0.11
40.53
± 3.90
0.36
± 0.05
273
± 33
15–30
58.08
± 2.06
1.11
± 0.07
54.33
± 4.42
0.35
± 0.04
302
± 36
30–47
47.03
± 13.76
0.84
± 0.35
59.70
± 12.08
0.27
± 0.09
214
± 158
789
± 227
OP5
0–15
47.38
± 5.27
0.92
± 0.14
57.05
± 9.63
0.40
± 0.05
273
± 46
15–30
51.81
± 3.81
0.86
± 0.07
61.59
± 4.17
0.35
± 0.03
264
± 25
30–47
41.64
± 6.26
0.60
± 0.10
70.51
± 4.35
0.27
± 0.02
196
± 48
733
± 119
Mean OP
48.73
± 5.05 a
0.95
± 0.13 b
55.91
± 5.66 c
0.37
± 0.05 b
689
± 147
Data are mean
± standard error. Different letters in superscript following values describe statistical significance across primary forest, secondary forest, and oil
palm plantation