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Federal State Budget Educational Institution of Higher Professional Education — «St. Petersburg State Forestry University named after S.M. Kirov «(hereinafter referred to as SPbSFU or university) is a non-profit organization established for achieving educational, scientific, social, cultural and management goals in order to meet spiritual and other immaterial needs of citizens in education, as well as for other purposes, aimed at achieving public goods.

A study was made of the dynamics of the state of the pine stand of an ordinary pine tree growing in the village of Lembolovo in the Leningrad Region over a 4-year period: an estimate of the phytosanitary state of trees with an average standpoint over the years, the calculation of dead trees, and the main factors of weakening of the stand. It was established that trees with attempts to colonize ...

SUBJECT: сосновые лубоеды; population accounting; pine-eel; дополнительное питание; факторы ослабления

POSTED TO: Izvestia Sankt-Peterburgskoj Lesotehniceskoj Akademii [Известия Санкт-Петербургской лесотехнической академии]

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A mathematical model of a dynamic system has been developed: «The feller buncher – subject of labor – the tree». The mathematical description is made up in the form of the Lagrange equation of the 2nd kind. The system of equations is solved by the Runge–Kutta method, using the MathCAD programming environment. Approbation of the model is carried out on the example of the commercially available ...

SUBJECT: динамическая нагрузка; feller buncher; валочно-пакетирующая машина; mathematical model; dynamic load

POSTED TO: Izvestia Sankt-Peterburgskoj Lesotehniceskoj Akademii [Известия Санкт-Петербургской лесотехнической академии]

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The paper considers the general technology for designing a forest road route in space and the rationale for choosing the most effective method for specific conditions. In the method of approximation of a sequence of points, a dialog mode, that is, a mode of operative communication between a designer and a computer in the process of solving a problem, is widely used. In order to save computer t ...

SUBJECT: проектирование; forest roads; design; метод последовательности точек; method of sequence of points

POSTED TO: Izvestia Sankt-Peterburgskoj Lesotehniceskoj Akademii [Известия Санкт-Петербургской лесотехнической академии]

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The study of the strength of glued joints of glued beams has been devoted to a large number of works of domestic scientists, the analysis of which allows us to identify significant factors, the main ones being the moisture and density of wood and the type of glue used. With an increase in moisture content of more than 12% when gluing with urea and phenol-formaldehyde adhesives, the level of th ...

SUBJECT: прочность; gluing of solid wood; strength; склеивание цельной древесины; destruction of adhesive layer

POSTED TO: Izvestia Sankt-Peterburgskoj Lesotehniceskoj Akademii [Известия Санкт-Петербургской лесотехнической академии]

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The aim of the study is to assess the survival, growth and development of lodgepole pine in comparison with the Scots pine on the experimental plantations on the European North of Russia (the Arkhangelsk and Vologda regions, and the Komi Republic). The growth analysis of lodgepole pine on the plantations in the Arkhangelsk region in different growing conditions showed that the lodgepole pine, ...

SUBJECT: таксационные показатели; scots pine; growth speed; сосна скрученная; origin

POSTED TO: Izvestia Sankt-Peterburgskoj Lesotehniceskoj Akademii [Известия Санкт-Петербургской лесотехнической академии]

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The purpose of the study is to study the dynamics of heating a single piece of high – moisture tree bark located in a dense layer of blown, high-temperature coolant. The analysis of the energy use of wood bark in the process of its burning in a layered way in the furnaces of heat generators. The conditions of effective use of wood bark as fuel are revealed. A mathematical model of warming up a ...

SUBJECT: топочные устройства; сжигание топлива; furnace units; fuel combustion; сушка коры

POSTED TO: Izvestia Sankt-Peterburgskoj Lesotehniceskoj Akademii [Известия Санкт-Петербургской лесотехнической академии]

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The territory of large cities is increasing, larger areas of biogeocenoses are used for the construction of linear objects (urban infrastructure). This leads to an increase of the load on the ecosystems of surrounding areas. The most significant linear object of the city of St. Petersburg is the Ring Road. The construction and operation of the Ring Road leads to the disruption of the links bet ...

SUBJECT: кольцевая автодорога; сосновые насаждения; radial increment of forest stands; the ring road; pine stands

POSTED TO: Izvestia Sankt-Peterburgskoj Lesotehniceskoj Akademii [Известия Санкт-Петербургской лесотехнической академии]

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The article discusses the possibility of using different multi-temporal e-cartographic material in scientific and industrial activities of Educational-experimental forestry of the Leningrad region. It is established that due to possibility to combine and simultaneously analyze in the diverse combination of remote sensing data and various multi-temporal electronic thematic maps (geographical, g ...

SUBJECT: электронные картографические материалы; electronic cartographic materials; земли лесного фонда; remote sensing data; данные дистанционного зондирования

POSTED TO: Izvestia Sankt-Peterburgskoj Lesotehniceskoj Akademii [Известия Санкт-Петербургской лесотехнической академии]

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Economic accessibility of a significant part of forest resources in the main forest regions of the country can be provided only by using a dense network of rivers, consisting mainly of medium and small rivers. Shipments can play significant role in this. Typically, the barges are used for the transport of timber along inland waterways, because of their large size are not applicable at the smal ...

SUBJECT: экспериментальные исследования; неравномерное движение; water resistance; timber transport; speed

POSTED TO: Izvestia Sankt-Peterburgskoj Lesotehniceskoj Akademii [Известия Санкт-Петербургской лесотехнической академии]

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The article presents the technique and technology of maintenance of forestry machinery and equipment, which ensures the increase of reliability, durability and reduction of energy intensity in the process of exploitation due to the use of repair and recovery mixtures based on serpentine minerals. What is especially important, repair and restoration work is carried out without disassembly of ma ...

SUBJECT: life cycle; серпентиниты; serpentinite; надежность; durability

POSTED TO: Izvestia Sankt-Peterburgskoj Lesotehniceskoj Akademii [Известия Санкт-Петербургской лесотехнической академии]

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