STRUCTURE, PRODUCTIVITY AND FORECAST CHANGES IN STEM WOOD VOLUME OF PINE FORESTS OF THE POLESYE STATE RADIATION-ECOLOGICAL RESERVE
The modern structure of the tree layer of pine forests of Polesye state radiation-ecological reserve is dynamic and is due to the intensive forestry activities carried out in them before the Chernobyl NPP accident, limited forest use, artificial afforestation and natural overgrowth of former agricultural lands in the post-accident time. Currently, the stock of timber in mature pine stands is insignificant. According to the forecasts of cleansing pine wood from <sup>137</sup>Cs to the level of 740 Bq/kg in experimental economic zone will happen by 2027; in the reserve zone, the specific activity of this radioisotope decreased to 1480 Bq/kg by 2059, and to the level of740 Bq/kg by 2082 and exploitable volume will make up 88.2 thousand m3, 1813.3 thousand m<sup>3</sup> and 5852.8 thousand m<sup>3</sup>, respectively.