corresponds to NCS
The system boundary is the edge of the forest. The precisely designated forest area is the geographical definition of the project (location and size). The project area is to be defined by maps, coordinates, or other clear descriptions. In case of inaccuracies in the area definition, conservative values are to be assumed. 
Areas that meet the legal requirements for forest definition are eligible. Furthermore, isolated small areas with an area less than 0.5 hectares are conservatively excluded from the project area. If an economic connection between such an area and other forest areas can be demonstrated, it can still be considered. 
Bare areas, permanently unstocked and unproductive areas are not eligible for the project area.