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Wyszukujesz frazę "forest works" wg kryterium: Wszystkie pola


Wyświetlanie 1-12 z 12
Tytuł:
Kształtowanie struktury organizacyjnej nadleśnictw w zależności od organizacji prac gospodarczo-leśnych
Formation of the organizational structure of forest districts in dependence of the organizing of forest works
Autorzy:
Kocel, J.
Powiązania:
https://bibliotekanauki.pl/articles/810734.pdf
Data publikacji:
1991
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Panstwowe Gospodarstwo Lesne Lasy Panstwowe
nadlesnictwa
struktura organizacyjna
prace gospodarczo-lesne
organizacja pracy
struktura zatrudnienia
Źródło:
Sylwan; 1991, 135, 11
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ czynników organizacyjnych na wydajność eksploatacyjną harwestera
Effect of organizational factors on harvester exploitation efficiency
Autorzy:
Błuszkowska, U.
Nurek, T.
Powiązania:
https://bibliotekanauki.pl/articles/989285.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
mechanizacja prac lesnych
pozyskiwanie drewna
harwestery
wydajnosc pracy
wydajnosc eksploatacyjna
czynniki organizacyjne
forestry mechanization
timber harvesting
organization of forest works
Opis:
High unit costs of mechanized timber harvesting are a major obstacle for the development of this process in Poland. Apart from that, other important factors include forests structure, work organization and principles of the forest utilisation in the State Forests. Fragmentation and dispersal in the superintendence economic tasks related to the acquisition of wood affect the reduction of the degree of use of the machine during the working day. In this study, we paid particular attention to the harvester runs between successive tasks and between tasks and bases of the night stopover. The above−mentioned organizational factors can substantially affect the performance of the machine and their potential reduction could improve the economic efficiency of the use of harvesting machines in the Polish forests. The simulation calculations assumed fixed total area covered by the work of logging and fixed total amount of acquisitions. The parameters of the variables in the calculation was the number of tasks performed and the number of bases of the night stopover. Change in the previous parameter was clear with the volume of a single task and the distance between them. The paper discusses the results of research on the impact of these parameters on the multioperational machine operating efficiency. Reducing the number of jobs (increasing their size) causes significant increase in harvester efficiency. In extreme cases, it may be up to about 20%. The article also points to the possibility of better organization of work and thereby the economic effects of the use of harvesting machines in selected forest areas. Deciding on the organization of work in a specific forest district one should however also take into consideration principles of the forest utilisation.
Źródło:
Sylwan; 2016, 160, 06; 443-451
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Organizacja i wykonawstwo inżynieryjnych robót leśnych w Niemieckiej Republice Demokratycznej
Organizacija i realizacija inzhenernykh lesnykh rabot v Germanskojj Demokraticheskojj Respublike
Organization and execution of forest engineering works in the German Democratic Republic
Autorzy:
Solik, J.
Zarzycki, S.
Powiązania:
https://bibliotekanauki.pl/articles/821788.pdf
Data publikacji:
1973
Wydawca:
Polskie Towarzystwo Leśne
Źródło:
Sylwan; 1973, 117, 09
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Słownictwo leśne i łowieckie w dziełach Stefana Żeromskiego
Lesnaja i okhotnichnaja terminologija v proizvedenijakh Stefana Zheromskogo
Forest and wildlife vocabluary in works by Stefan Zeromski
Autorzy:
Baranski, S.
Powiązania:
https://bibliotekanauki.pl/articles/821748.pdf
Data publikacji:
1976
Wydawca:
Polskie Towarzystwo Leśne
Źródło:
Sylwan; 1976, 120, 04
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prace Instytutu Badawczego Leśnictwa nad selektywizacją metod zwalczania szkodliwych owadów
The works of the Forest Research Institute on the selection of methods of chemical control of harmful insects
Autorzy:
Kulesza, J.
Powiązania:
https://bibliotekanauki.pl/articles/825030.pdf
Data publikacji:
1966
Wydawca:
Polskie Towarzystwo Leśne
Źródło:
Sylwan; 1966, 110, 11
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stan techniczny dróg leśnych - potrzeby remontowe
Technical condition of forest roads - repair needs
Autorzy:
Trzciński, G.
Czerniak, A.
Powiązania:
https://bibliotekanauki.pl/articles/987152.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drogi lesne
stan techniczny
nawierzchnie drogowe
potrzeby remontowe
Panstwowe Gospodarstwo Lesne Lasy Panstwowe
regionalne dyrekcje Lasow Panstwowych
road maintenance
road surface
fire access roads
road works
Opis:
Making transportation possible in forest areas is essential for forest management to ensure the protection of tree stands (fire access roads, forest monitoring) and use (in situ sales of wood), as well as for tourism and educational purposes. The units of the State Forests National Forest Holding optimize the spatial and quantitative network of roads, but as the manager of the National Treasury's assets, they must ensure that forest roads are in adequate condition. An attempt was made to analyze the technical condition of forest roads based on data from the Information System of the State Forests and to determine their repair and investment needs. Over 50% of all forest roads in the areas managed by the State Forests are still natural, unpaved roads, and 25% of them are considered to be in bad condition. The general technical condition of transportation routes is better, as roads providing unlimited traffic in good and satisfactory condition amount to 43,348 km (41% of all roads). 48% of main roads connected with public roads, which are the primary communication system of forest districts, are in good and satisfactory condition. The analysis shows that 24% (13,000 km) of main roads generally have a dirt surface or improved dirt surface, whereas 5,500 km of roads serving as fire access roads are in bad condition, requiring repair or reconstruction. The use of unpaved surfaces requires maintenance and repair work to ensure the ability to sustain load capacities and parameters enabling use by high−tonnage vehicles for timber hauling and extinguishing fires. It is estimated that on average 5.4% of roads need main− tenance work per year, which is equivalent to almost 5,760 km. The quantitative optimization of roads contributed to an increase in the importance and load of the current forest road network, where main roads represent 52% and fire access roads 47%, connected with the need to ensure appropriate technical parameters through the reconstruction of sections of roads.
Źródło:
Sylwan; 2017, 161, 07; 539-547
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prof. dr Klaus Stern oraz jego prace z zakresu genetyki i selekcji drzew leśnych
Prof. dokt. Klaus Stern i ego raboty v oblasti genetiki i selekcii lesnykh derev''ev
Prof. Dr Klaus Stern and his works in the field of genetics and selection of forest trees
Autorzy:
Kociecki, S.
Powiązania:
https://bibliotekanauki.pl/articles/821701.pdf
Data publikacji:
1974
Wydawca:
Polskie Towarzystwo Leśne
Źródło:
Sylwan; 1974, 118, 02
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Odtworzenie nieistniejących jezior jako element zwiększania retencji leśnej i pozaprodukcyjnych funkcji lasu
Restoration of non-existing lakes as part of increasing forest retention and enhancing non-productive functions of forests
Autorzy:
Ptak, M.
Powiązania:
https://bibliotekanauki.pl/articles/989832.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
lasy
funkcje pozaprodukcyjne
retencja wodna
zasoby wodne
jeziora srodlesne
niecki jeziorne
odtwarzanie
lake disappearance
water resources
retention
hydrotechnical works
Opis:
The aim of the work is to present the possibility of increase in water resources and creation of new non−productive forest functions by restoration of the non−existent forest lakes. Ten currently non−existent natural forest lakes were randomly selected in northern Poland and their extent and volume of the water deposited in their basins were determined. The analysis was performed in two stages. At first, based on the cartographic materials (1:25 000) from XIX and XX century, the location of the lakes before their complete disappearance was determined and their surface were calculated. Bathymetric plans were reconstructed based on the 1:10 000 topographic map. Obtained contour lines constituted the isobaths necessary to calculate the volume of the using Penck method. The results show a large−scale transformation of the natural environment in the forests. The total area of the analyzed lakes before their disappearance amounted to nearly 800 ha, and the total volume of water was estimated to 12 million m³. The main activities aimed at achieving the foregoing goal include damming of rivers and lakes, construction of artificial reservoirs, etc. At this point the possibility of restoring the natural hydrographic network elements to their original condition should be considered. Such an approach would certainly be less harmful to the environment than artificial structures, whose long−term impact on the environment is not always possible to determine. Yet another issue is the possibility of adaptation of the reconstructed forest lakes and their surroundings in order to achieve the objectives related to the non−productive forest functions. Based on the preliminary information on the location, area and volume of the lakes, more detailed analysis should be made taking into account natural needs (changing the species composition of the forest, increasing biodiversity, etc.) and economic aspects (e.g. leisure and recreational facilities).
Źródło:
Sylwan; 2015, 159, 05; 427-434
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-12 z 12

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