from 01.01.2017 until now Voronezh, Voronezh, Russian Federation
In this paper, using the example of 8 blocks of the Somovskoye forestry of the Voronezh region, the exact location of the road and path network was established during field research. For the object of study under consideration, using the QGIS program, data on the location of roads and paths were obtained from four open Internet sources (Yandex People's Map, Openstreetmap, OpenStreetMap GPS track, Yandex Kosmosnimok). A comparison of their total length was made according to the data of the resources selected for analysis with the field work materials separately for each forest block and for the object as a whole. The minimum and maximum deviations were from 0% to 77%, respectively. The most accurate results for the object of study as a whole were provided by the source "OpenStreetMap" (OSM).
road and path network, geographic information systems (GIS)
1. QGIS – Svobodnaya geograficheskaya informacionnaya sistema s otkrytym kodom : sayt. – URL: http://www.qgis.org/ru/site/.
2. Narodnaya karta Yandeksa – redaktor Yandeks kart. – URL: https://n.maps.yandex.ru/#!/?z=15&ll=39.295692%2C51.699245&l=nk%23sat .



