The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
One of the most difficult technological operations in forest utilization is wood transport, especially its first stage i.e. extraction. This is related to the fact that the forest operations must be economically effective, but also safe for the forest environment. Difficult terrain conditions require determining and choosing the optimal variant of skidding. The most popular method for optimizing work...
The burning of wood in the Bieszczady Mountains (SE Poland) began to play a significant role with first settlements in this region in the 17th and 18th centuries. Large beech wood resources were the main reason for such a high charcoal production in this part of Poland. The role of charcoal production in the Bieszczady region is reflected in the names of villages such as Smolnik (Tar), Potasznia (Potash)...
Due to the observed impacts of climate change on the natural environment, the demand for energy from renewable sources is growing, especially in the last decades. One of the possibilities in this respect is the use of forest biomass, especially that one which comes from logging residues. This type of wood raw material is obtained primarily in mature forests and during late thinnings. Estimation of...
The paper presents a multifaceted structure of timber harvest in 2008−2015 in the Białowieża, Browsk and Hajnówka forest districts located in the Białowieża Forest. The object of the research, including the Białowieża National Park being a remnant of the primeval forests, is considered one of the most valuable forest areas of natural origin in Europe. The studies were made on the basis of the data...
One of the most important factors influencing work performance of chainsaw operators, considered as one of the most dangerous, is acquirement of knowledge in a training course enabling to obtain vocational qualifications as a logger and to gain experience in timber harvesting operations. Securing the safety of the chainsaw operator is realized on two levels. Firstly, by organizing appropriate training...
The structure of timber sales in forest districts of the Białowieża Forest in the years 2008−2015 is presented. The Białowieża Forest is one of the most valuable natural areas in Europe. The data from the reports generated by the State Forests Information System of the Hajnówka, Browsk and Białowieża forest districts were used for the research. The information contained in the forest management plans...
Timber hauling from the forest, either directly to the consumer or to the place of transshipment for a rail transport, is carried out by vehicles adapted to the transport of long or short logs and medium−sized wood. In Poland, regulations restrict the total weight of a vehicle traveling on roads, which consists of the weight of the empty vehicle and the weight of the load. When transporting the wood,...
The aim of this paper is to investigate and compare structural, mechanical and physical properties of wood of Norway spruce growing on experimental plot in Rogów (central Poland). The planting material consisted of seeds sourced from six selected provenances. Three of them originated from lowlands, while the others have mountain origins (tab. 1). The plot was established in 1975 and the wood was harvested...
Pozyskiwanie drewna, zgodnie z ustawą o lasach, jest jedną z głównych dziedzin działalności leśnictwa. Proces ten może się odbywać jednak pod warunkiem zapewnienia maksymalnej ochrony środowiska. Ze społecznego i gospodarczego punktu widzenia z pozyskiwania drewna zrezygnować nie można. Leśników więc obowiązuje zasada takiego postępowania, aby naruszenie równowagi środowiska było minimalne i umożliwiało...
Obserwowany w Polsce wzrost liczebności zwierzyny grubej, której głównym miejscem bytowania są ekosystemy leśne, dostarczające pokarmu i schronienia powoduje określone konsekw encje przyrodnicze i gospodarcze. W niektórych rejonach kraju liczebność zwierząt kopytnych jest tak duża, że może to zagrażać trwałości lasów. Zdaniem wielu leśników zwierzyna stanowi główną barierę dla osiągania celów hodowlanych...
As the access to the fossil fuels is limited, renewable energy sources have been especially intensively promoted in recent years, namely biomass. A comparatively large amount of biomass can be obtained from forests. This refers to round wood characterized by low technical quality, small−sized wood, and logging residues. Under Polish conditions, the potential amount of logging residues is estimated...
Submission is a public announcement of an offer in order to acquire buyers who then present their offerings in writing, thus accepting the terms of sales and payment for the purchased timber. Submission sales of valuable timber is one of the forms of sales of timber adopted by the State Forests National Forest Holding. Increasing demand for supreme quality timber, collected in large amounts in one...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.