Figure. The special features information message enables transferring the object of an image from one system to another, among other things.
Special features in the field of Finnish forestry refer to either characteristics of the forest or objects found in the forest that should be taken into account, for example, when planning a felling. In connection with forest information standards, special features refer to classified geographic information, which may consist of points, lines or areas. There is abundance (i.e. a few thousand) of identified, classified, and encoded types of objects with special features. Examples of such object types include gravel pits, groundwater areas, flying squirrels, storage places, and relics, among others. The classification of object types covers the needs of forestry very comprehensively, but expanding the encoding of a standard remains possible and continues being carried out in connection with standardisation as needed. The classification contains some species of flora and fauna, some categories of land use, a classification of nature reserves, some types of objects related to wood harvesting and forest management implementation, a typification of relics, a text point with specifications, etc.
A separate data transfer message intended for the transfer of special features enables versatile transfers of geographic information between systems and operators. The process of standardisation has not taken a position on the kinds of situations where objects with special features can be transferred. Objects can be transferred, for instance, in connection with forest resource information as additional, spatially referenced supplementary information, in connection with timber trade or forest management project sites as separate information to guide the process, and as a separate data transfer concerning a group of objects of a limited type (e.g. nature sites or the distribution of some individual species).
In some of the forest information standard messages, the transfer of special features information is integrated into some other data transfer message. This applies, for instance, in the case of the forest information standard for timber trade and forest management. Using a separate special features message in these cases is unnecessary.