The purpose of the research was to identify, research and assess high conservation value forests (HCVF) and representative areas allocated in the lease base of the enterprise. The object of the research is forest areas of special conservation value in the lease base of the logging enterprise LLC Tolshmenskoye. The subject of the research is the quantitative and qualitative characteristics of the high conservation value forests stands. The research was carried out on four stationary objects, which are represented by coniferous stands. The share of conifers in the composition of the stand is from seven to nine units. The researches were based both on the research performed of forest management and reporting documentation of the enterprise, and on the basis of field research materials. The choice of research objects is due to the fact that these plantations perform the function of preserving biological diversity and are excluded from economic activity, which allows for long-term monitoring observations to assess quantitative and qualitative changes in the structure of forest stands and make conclusions about their performance of target functions. The results of the survey showed that the population of trees is characterized by high classes of sanitary assessment. In terms of health, most tree species show no signs of weakening. The number of healthy specimens according to the objects of research and according to the breed composition is quite high (at least 67%). No significant anthropogenic impacts have been identified. The number of undergrowth varied greatly according to the objects of research. The undergrowth is heterogeneous in composition. At the same time, aspen and spruce occupy the dominant position in the emerging tree canopy.