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Table 1 Major characteristics of five typical Melaleuca forests in the study areas

From: An assessment of the carbon stocks and sodicity tolerance of disturbed Melaleuca forests in Southern Vietnam

Forest types Tree classes Code Stand trees Understory Saturation levels
Density (trees/ha) DBH (cm) BA (m2/ha) Height (m)
Mean SE Mean SE Mean SE Mean SE
Primary Melaleuca on sandy soil DBH < 5 cm VS1C0 800 248.3 3.87 0.11 na na 6.00 0.28 Leptocarpus sp.
Lepironia sp.
Hanguana sp.
Eleocharis sp.
Euriocaulon sp.
Xyris sp.
Stenochlaena sp.
Melastoma sp.
Imperata sp.
Including non-inundated, seasonal, and permanent inundation
5 cm ≤ DBH < 10 cm VS1C1 400 100.0 7.18 0.36 na na 9.81 0.68
10 cm ≤ DBH < 20 cm VS1C2 750 273.8 14.63 0.22 na na 14.80 0.26
20 cm ≤ DBH < 30 cm VS1C3 285 34.0 24.33 0.49 na na 18.44 0.40
30 cm ≤ DBH < 40 cm VS1C4 80 28.3 34.37 0.90 na na 20.17 0.97
DBH ≥ 40 cm VS1C5 20 10.0 48.73 3.75 na na 22.20 1.77
All classes VS1 2,330 558.0 16.71 0.55 41.54 6.16 14.69 0.30
Regenerating Melaleuca on sandy soil DBH < 5 cm VS2C0 5,450 2,850.0 3.63 0.07 na na 6.13 0.16 Including non-inundated and seasonal inundation
5 cm ≤ DBH < 10 cm VS2C1 5,500 700.0 7.07 0.14 na na 8.08 0.15
DBH ≥ 10 cm na na na na na na na na na
All classes VS2 10,950 3,550.0 5.36 0.14 28.41 3.14 7.11 0.13
Degraded secondary Melaleuca on clay soil with peat DBH < 5 cm VS3C0 150 na 4.41 0.23 na na 5.00 0.29 Stenochlaenapalustris
Phragmitesvallatoria
Melastomadodecandrum
Diplaziumesculentum
Lygodiumscandens
Aspleniumnidus
Scleriasumatrensis
Cassia tora
Paederiafoetida
Flagellariaindica
Cayratiatrifolia
Including seasonal and permanent inundation
5 cm ≤ DBH < 10 cm VS3C1 350 na 7.12 0.68 na na 4.57 0.38
10 cm ≤ DBH < 20 cm VS3C2 440 20.0 13.11 0.36 na na 10.44 0.41
20 cm ≤ DBH < 30 cm VS3C3 30 na 25.00 1.20 na na 14.33 0.17
30 cm ≤ DBH < 40 cm VS3C4 10 na 35.35 na na na 12.50 na
DBH ≥ 40 cm VS3C5 na na na na na na na na
All classes VS3 980 560.0 12.93 0.71 10.29 4.74 9.69 0.45
Regenerating Melaleuca on clay soil with peat DBH < 5 cm VS4C0 3,867 2,258.6 3.84 0.06 na na 4.15 0.11 Including seasonal and permanent inundation
5 cm ≤ DBH < 10 cm VS4C1 5,967 176.4 7.20 0.12 na na 6.68 0.17
DBH ≥ 10 cm na na na na na na na na na
All classes VS4 9,833 2,265.9 5.88 0.12 30.14 1.46 5.68 0.13
Regenerating Melaleuca on clay soil without peat DBH < 5 cm VS5C0 2,133 592.6 3.82 0.09 na na 4.95 0.17 Including seasonal and permanent inundation
5 cm ≤ DBH < 10 cm VS5C1 4,733 1,560.3 7.27 0.13 na na 8.65 0.31
DBH ≥ 10 cm na na na na na na na na na
All classes VS5 6,867 1,970.1 6.20 0.14 23.02 8.53 7.50 0.25