The historical methods of forests research at fixed sites continue to be the most reliable way of collecting information about the processes of tree stand formation, differentiation, and the onset of various age stages. The article presents the results of 70 years of observations at a permanent sample plot located in waterside buffer forests at Lake Karasye in the Yemtsovsky Training and Experimental Forestry District of the Obozersky Forest Management Unit (Plesetsky District, Arkhangelsk Region). Baseline surveys were carried out and the permanent sample plot was established in 1952 under the guidance of Associate Professor V. I. Kalinin. Subsequently, measurements were repeated by students under the guidance of professors of the Northern (Arctic) Federal University (previously Arkhangelsk Forest Technology Institute and Arkhangelsk State Technical University). Long-term monitoring shows that, despite the old age, the stand continues to be highly productive. The stand evolves through tree-fall dynamics, with shadetolerant spruce regenerating successfully in the gaps forming after the fall of old pine and larch tree. Studies show that a spruce forest with an admixture of larch, pine and birch is replacing the mature pine-larch tree stand. The forest register data show the area occupied by larch stands in the Arkhangelsk Region is gradually declining. This may be due to the tendency to underestimate of the larch share during valuation inventories. The conservation measures such as excluding stands comprising 30 or more percent of larch from logging plans have proved ineffective. Monitoring in permanent sample plots shows that the stand's growing stock composition will usually change from larch to spruce. To ensure larch restoration at the limit of its distribution range in the Arkhangelsk Region, actions to promote its regeneration and artificial planting are needed.

Conservation of natural and agricultural landscapes is one of the priority activities of Kenozersky National Park (hereinafter Park). The landscapes are not stable and constantly change under the influence of the external factors. Landscape dynamics occurs by the certain regularities, which are illustrative of the development of the natural forest ecosystems, as well as modified by human activity plantations. The processes in the ecosystem are complex, and require constant monitoring, as the loss of the certain landscapes can significantly impoverish the structure of the natural objects of the Park. Many landscapes have been shaped over the centuries. To ensure the diversity of the natural and cultural landscapes it’s necessary to manage with these developments. The preservation of the agricultural landscapes of the Park requires less material expenses, than to restore them. Nevertheless, some of the landscapes were lost because of the changing of the social and economic living conditions of the rural population. For landscapes preservation it is important to study them, evaluate dynamics of development.To characterize the growth of woody plants at the open areas of former agricultural fields some model trees of birch and alder were inspected and it was established that for the period of 7-10 years they reached a height of 3,5 m. So, within a decade the open areas can turn into the forested territory. The projected amount of work is the minimum that one must perform for the sustainable management of Malselgsko-Guzhevsky cultural landscape complex.

Assortment tables for evaluation of larch stands located in North-East forest inventory region were developed on the basis of test trees data, distribution series and mathematical models equalizing the assortment output by log size. Two variants of assortment tables with data in percentage and cubic meter terms are proposed.