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The major breeding direction of Siberian pine ( Pinus sibirica Du Tour) is the selection of populations and genotypes for the abundant yield and seed quality. We analyzed the formation of cones and microstrobiles of Siberian cedar ( Pinus sibirica Du Tour) for a 32-year period (1983-2014) in a geographic seed plantation, established by 16-year-old seedlings planting. The analysis is conducted ...

SUBJECT: шишки; отбор; плантация; miсrostrobile; урожайность

POSTED TO: Известия высших учебных заведений. Лесной журнал [0536-1036]

The observational study on the permanent sample plots establishes the features of spruce seed productionin 15 and 29 years after a clear cutting of birch stands with the preservation of spruce undergrowth and in 29 years with the preservation of spruce in the second tier. For comparison (as a control) we use data of spruce seed production under the canopy of birch forests at the age of 70...75 ...

SUBJECT: древостои березы; birch stand; южная тайга; семеношение ели; south taiga

POSTED TO: Известия высших учебных заведений. Лесной журнал [0536-1036]

We conducted the ability and efficiency test of the use of the English oak ball-rooted seedlings to demonstrate the innovative value of this method for forestry. Silvicultural and economic efficiency of the process was studied during 2011-2015 in three forest districts of the Tambov region by planting bareroot and ball-rooted seedlings. The statistically significant difference in terms of surv ...

SUBJECT: дуб черешчатый; englih oak; economic effectiveness; закрытая корневая система; рост сеянцев

POSTED TO: Известия высших учебных заведений. Лесной журнал [0536-1036]

The paper analyzes the impact between the average forest inventory indices of the forestlands with the silver birch dominance (Betula pendula Roth.) in the forest-steppe zone of Middle Siberia. The study object is the forestland with an absolute birch stand predominance in the Mansky Forestry in the Krasnoyarsk region. The study is based on the data of the forest inventory of 1212 subcompartme ...

SUBJECT: relative density; березовые древостои; birch stand; средняя высота; запас стволовой древесины

POSTED TO: Известия высших учебных заведений. Лесной журнал [0536-1036]

The successional changes under the influence of forest ungulates can be both positive and negative. The aim of the work is to evaluate the effect of the trophic activity of a moose as the largest phytophagan of the North-West of Russia on some hardy-shrub species in summer. The studies are conducted on felling of different time ranges during the period of their natural overgrowing. Mixed and d ...

SUBJECT: коэффициент восстановления; лиственные молодняки; вырубки; recovery factor; смешанные молодняки

POSTED TO: Известия высших учебных заведений. Лесной журнал [0536-1036]

Currently, the attention of forest pathologists is directed to the problem of a new aggressive pest of Siberian fir - four-eyed fir bark beetle (Polygraphus proximus Blandf. (Coleoptera, Scolytidae)). Until recently, the species was known in the Khabarovsk and Primorsky Territories, Sakhalin, the Kuril Islands, Korea, Japan, and northeast China, where usually colonized the weakened forms of Fa ...

SUBJECT: forest live cover; ecological and cenotic structure; undergrowth; эколого-ценотическая структура; siberian fir

POSTED TO: Известия высших учебных заведений. Лесной журнал [0536-1036]

Pinus sylvestris L. manifests the intrapopulation individual genetic variation by the sexual type. The goal of research is the evaluation of variability in radial increment of pine trees of different sexual types under hydrogenic conditions in the northern taiga of the European part of Russia. The research is carried out in the shrub-sphagnum pine forests on wetland upland soils in the lower r ...

SUBJECT: постоянное избыточное увлажнение почв; sexual type; radial increment; constant overwetting of soils; сосна обыкновенная

POSTED TO: Известия высших учебных заведений. Лесной журнал [0536-1036]

Northern cities, as a rule, have poor species composition of dendroflora. The introduction of promising species is necessary to expand the range of urban flora. Siberian larch is one of the species, possible for urban planting. It passes the whole cycle of seasonal development during the warm period and complete it by the beginning of winter in terms of Vologda. The period of germination is ob ...

SUBJECT: репродуктивные свойства; phenology; лиственница сибирская; адаптация; adaptation

POSTED TO: Известия высших учебных заведений. Лесной журнал [0536-1036]

The paper considers the features of operational planning and management of logging activities. It is almost impossible to choose the number of machines in a plant to make their performance in all operations similar. In order to reduce the ineffective time in the operating shifts of the lead machines we offer the operational planning - a calculation of modes of machinery and equipment in indivi ...

SUBJECT: additional machine; оперативное планирование; межоперационные запасы; оперативное управление; lagging operation

POSTED TO: Известия высших учебных заведений. Лесной журнал [0536-1036]

The formation of the skidding trail system when thinning and selective cuttings of mature and over-mature forest stands reduces the performance of stands as a result of the corridors cutting and mechanical deformation of soil in the process of moving of the skidding equipment. Reducing the density of the skidding trails in the selection thinning of forest stands is reached by timber skidding t ...

SUBJECT: мини-трактор; производительность; performance; рациональный маршрут перемещения; трелевка древесины без прокладки волоков

POSTED TO: Известия высших учебных заведений. Лесной журнал [0536-1036]