Mangrove forest zonation by using high resolution satellite data
Table 1 Results of digital classification of mangrove
region at Khulung, chanthaburi, from
the image of 20 December 1988.
|
No. | Classes |
Area
Sq. km | % |
Color |
| 1 | Dense Mangrove Rhizophora | 14.03 | 3.10
| Dark green |
| 2 | Open Mangrove Rhizophora | 30.77 | 6.80
| Light blue |
| 3 | Avicennia Mangrove Forest | 0.85 | 0.20
| Orange |
| 4 | Desnse Mixed Mangrove Forest | 39.22 |
8.60 | Yellow |
| 5 | Mixed Open Mangrove Forest | 60.60 |
13.30 | Yellowish green |
| 6 | Mangrove Forest Plantation | 0.10 |
0.01 | Bright red |
| 7 | Melaleuca Formation | 8.36 | 1.80 | Purple |
| 8 | Rubber Plantation | 10.34 | 2.30
| Pink |
| 9 | Orchards and bushes | 21.67 | 4.80
| Violet |
| 10 | Active Paddy Fields | 1.83 | 0.40
| Dark violet |
| 11 | Harvested Paddy Fields | 54.64 | 12.00
| Tan |
| 12 | Moist Bare Soil, Grass Land | 23.15 |
5.10 | Brown |
| 13 | Sandy Bare Soil | 1.53 | 0.30 | White |
| 14 | Flooded Aquaculture | 66.12 | 14.60
| Navy blue |
| 15 | Dry Aquaculture | 8.04 | 1.80 |
Redish pink |
| 16 | Water bodies | 117.78 | 24.60 |
Dark blue |
| Unclassified | 0.97 | 0.20
| Black |
| Total | 454.00 |
100
|
Figure 3 Results of digital classification of mangrove
region
at Khlung from image of 20 December
1988
(see color codes in Table 1).
6) Mangrove plantation of Rhizophora species.
7) Melaleuca formation. It is found further inland approaching the terrain ecosystem especially in the are of sandy soil.
The results area quite satisfactory when compared to the study of Pumijumnong (1986).
The spectral signature of each formation of mangrove forest obtained from the study (fig, 4) indicates that the zonation of dominant species could be clearly identified by using TM 4 and TM 5 bands.
