CONCLUSIONS
The overlay technics makes it possible to find the answer conveniently and quickly for
the wide area with many related factors. However, spatial model has to be made in place of the
study, especially in the evaluation of land suitability, in order that various factors have a clear
consequence of analysis and can easily be checked for results. The evaluation process is very
important due to the fact that it is a continuous process in conducting information that supports
provincial land use planning. Land use plan construction using supportive information from the
prepared databases is quick and convenient since the planner can easily define or selected the
target area. Besides, various layers can conveniently be used in support of plan making.