Table 1 Major characteristics of five typical Melaleuca forests in the study areas
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 | DBHÂ <Â 5Â 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 | DBHÂ <Â 5Â 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 | DBHÂ <Â 5Â 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 | DBHÂ <Â 5Â 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 | DBHÂ <Â 5Â 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 | |||