4. Conclusions
The THEOS panchromatic data with 2 m. resolution is capable of identifying and resolving
the different rubber plant ages with relatively higher accuracy. This study provided both spatial
and quantitative information on the rubber plantation areas that can be used for formulating
strategic policy planning in rubber export and extension. The marketing risk could be minimized
if the planning policy is implemented with obtained information. With availability of the rubber
plantation areas in a form of GIS database, a systematic analysis of formulating land use
planning in the province will be comprehensive and effective. To minimize the time required in
identifying the plantation areas, complete digital image processing should be further
investigated