Acta Scientiarum Polonorum
Silvarum Colendarum Ratio et Industria Lignaria

The aim of this study was to determine the ownership status of forest roads by the State Forests (PGL LP) and definition of ongoing changes in the road infrastructure in forest areas. The data obtained by analysing the inventory of forest roads for the forest districts by Regional Directorates of State Forests (RDLP) were summarized. Density indicators of forest roads in forest districts according to RDLP were calculated, and then the data were summarized for each RDLP. The paper presents the analysis of density indicators and comparison with the data of inventory in 2007. Analysis of data from 2015 showed that in PGL LP function- ing 106,639.7 km of internal forest roads, which are 62,226 inventory items. The density indicator of forest roads in the PGL LP is generally 15.28 m/ha and 7.15 m/ha for fire commuting roads. Comparing the length of all roads in the PGL LP from the SILP register in 2015 and data from inventory of roads on 31.12.2006 (182,973 km), it can be concluded that there was a reduction in the ownership of roads of about 76 333 km (41.7%) in forest districts. Analysis of data on the state of roads have revealed high diversity between the for- est inspectorates PGL LP. In the majority of forest districts, in comparison with 2007, there was a reduction in the length of roads necessary for forest management and the ratio of the density of roads. A significant role among all the forest roads constitute the roads which perform the function of fire commuting.