The objective of this study is to periodically monitor the forest change and to identify the plant community in the sanctuary. Aerial photo acquired in 1976, Landsat data in 1998 and 2005 were used to produce the land use patterns and its changes.The field investigation was conducted to verify the interpretation and to the inventory the plant community and sub community of forest types including its profile diagram. In addition the GIS database of land use pattern was established for the years 1976, 1998 and 2005. Further analysis was digitally performed to create the change detection maps.