Partitioning Carbon Dioxide Emission and Assessing Dissolved Organic Carbon Leaching of a Drained Peatland Cultivated with Pineapple at Saratok, Malaysia

Table 1

Physical and chemical properties of a drained peat soil sampled at different depths.

Variable	Mean (0 to 10 cm)	Results per soil depth (cm)			Reported standard range
		0 to 20 cm	20 to 40 cm	40 to 60 cm
Physical properties
Bulk density (g/cm^3)	0.14				0.09–0.12 [31]
Water holding capacity (%)	40.2				275–322 [31]
Moisture (%)		80.9^c	84.9^b	88.8^a	90–95 [32]
Chemical properties
pH		3.8^a  ± 0.1	3.9^a  ± 0.1	3.9^a  ± 0.1	3.0–4.5 [31]
Conductivity (S/cm)		178.5^a  ± 4.6	175.4^a  ± 4.3	172.7^a  ± 2.4	<200 [33]
Cation exchange capacity (cmol/kg)		146.4^a  ± 20.1	137.6^a  ± 13.7	175.6^a  ± 34.9	200 [31]; 145 [33]
Total organic carbon (%)		40.0^a  ± 0.8	39.8^a  ± 1.4	36.5^a  ± 1.1	12–60 [31]; 20.4–38.4 [34]
Total nitrogen (%)		1.33^a  ± 0.03	1.18^b  ± 0.04	1.12^b  ± 0.03	1.10–1.67 [32]
Ammonium-Nitrogen (mg/L)		138.5^a  ± 16.2	100.0^b  ± 4.2	94.8^b  ± 7.7	n.a.
Nitrate-Nitrogen (mg/L)		72.0^a  ± 5.4	48.8^b  ± 6.3	65.8^ab  ± 3.0	n.a.

Values (mean ± standard error) with different letters across the column are significantly different at ≤ 0.05.
(Note: n.a.: not available).