Silvicultural and ecological assessment of renewal cuttings

FBU “Northern Research Institute of forestry”, Research Department, 13, Nikitova, Arkhangelsk, 163062, Russian Federation

^* Corresponding author: surina_ea@sevniilh-arh.ru

Abstract

The objects of research were forest plantations, passed through renovation rubles in the Arkhangelsk forestry of the Arkhangelsk region. Trial plots were established in spruce plantations (bilberry spruce forest and sphagnum spruce forest), on fresh haulage, in apiary, and on old haulage after felling more than 30 years ago. Based on the results of the research, a model was built, with the help of which it is consistently assessed during the course of the research what happens to the forest stand after cutting (on a fresh trail, 4-5 years after cutting) and after more than 30 years on an old trail. In the blueberry spruce forest, 4-5 years after felling, the amount of undergrowth increased slightly (by 1500 pieces/ha) compared to the forest stand and mainly due to self-sowing, the species composition was preserved - spruce, birch, aspen. After more than 30 years, there was a massive increase in undergrowth by 8 times. In the sphagnum spruce forest in the apiary, birch prevailed; immediately after felling, due to littering and the impact of machinery, undergrowth settlement was not observed. After more than 30 years, the number of undergrowth increased due to birch (69%). Thus, by evaluating the undergrowth and undergrowth in the blueberry type of forest, the felling strategy is updated. In the sphagnum type, reforestation processes continue and reforestation processes are still observed.