Answer
The forests encircling Petrozavodsk are of the taiga type, characterized by their dense coniferous tree cover. Taiga forests predominantly consist of spruce, fir, and pine trees. These forests stretch across vast regions of northern Eurasia and North America, forming a significant part of the global boreal forest belt. The cold climate and long winters in these areas favor the growth of coniferous trees, which are well-adapted to the harsh conditions.