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Forestry
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Study on Forest Change Detection in Eastern Forest
by Remote Sensing Technique
Results
Results obtained from the study can be described briefly:
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Existing forest areas of 1982, 1988 and 1993 were 3,562.58 km2, 2,955.89 km2 and 2,801.57 km2 respectively.
- Forest encroachment area during 1982-1988 was 606.69 km2 or forest depletion rate was 101.12 km2/year.
- Forest encroachment area during 1988-1993 was 154.32 km2 or forest depletion rate was 30.86 km2/year.
- A total forest encroachment area during 1982-1993 was761.01km2 or forest depletion rate was 68.18 km2/year.
Forest encroachment map as appears in Figure 2.
Figure 2 Map showing forest changes during 1982-1993
- Land use map obtained from 1993 Landsat image interpretation comprises 13 categories namely: evergreen forest, mixed deciduous forest, dipterocarp forest, forest plantation, deteriorated forest, paddy field, rubber plantation, field crops, mixed orchard, urban area, water body, road, and others.
Reference
- Pongsak Polsena, 1994, Eastern Forest, paper presented in the seminar on Eastern Forest, Chacherngsao, Thailand.
- Thongchai Charuppat, 1994, Using Landsat 5-TM Imagery For Monitroing the Changes of Forest Area in Thailand, Departemnt of Royal Forestry, Bangkok, Thailand.
Figure 3 Forest changes appear in Landsat image of 1998 (upper) and 1993 (lower)
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