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Wyświetlanie 1-15 z 46
Tytuł:
Drogi leśne
Forest roads
Autorzy:
Zarzycki, S.
Powiązania:
https://bibliotekanauki.pl/articles/824755.pdf
Data publikacji:
1970
Wydawca:
Polskie Towarzystwo Leśne
Źródło:
Sylwan; 1970, 114, 08-09
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Funkcjonalność połączeń dróg leśnych z drogami publicznymi i innymi drogami wewnętrznymi
Functionality of the connections of forest roads with public and other internal roads
Autorzy:
Trzciński, G.
Młynarczyk, P.
Powiązania:
https://bibliotekanauki.pl/articles/979571.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
nadlesnictwa
uklad komunikacyjny
drogi lesne
drogi publiczne
drogi wewnetrzne
polaczenia drog
funkcjonalnosc
public roads
forest area
internal road
roads exit
roads junction
Opis:
The forestry communication system is included in larger transport areas through forest roads connections mainly with public roads, but also with internal ones. The possibility of realization of these connections and defining their technical parameters is very important, as it concerns the cooperation of various property owners as well as interference of the State Forest units into other land (road lane). The aim of the research was to analyse the exits, i.e. connections of forest roads with public or other internal roads, necessary to ensure the functioning of the communication system of the forest district. We investigated existing as well as the planned to be built exits. The research was carried out based on the developed information sheet regarding the scale and scope of issues related to the operation of the exits. We received back 412 information sheets and analysed the data according to the category of the road and the regional directorates of the State Forests (RDSFs). The total number of functioning exits the State Forests equals 108,239. The exits number varies from 2505 in RDSF Piła to 12,341 in RDSF Olsztyn and depends on the number of forest districts and their area, which is confirmed by the high number of exits in RDSF Bialystok, Szczecin and Wroclaw (tab. 1). The highest number of exits (53,455) was found for junctions with commune roads, and then district roads (31,190). A large number of exits (8111) was recorded for roads that do not have the status of a public road. More than a half of the surveyed forest districts (262) demonstrated the need to build 9072 new exits from various road categories, indicating primarily exits from communal roads and district roads (tab. 2). No need of building the exits to national roads was exhibited by 320 forest districts, and by 253 units for regional, 183 for district and 211 for communal roads.
Źródło:
Sylwan; 2019, 163, 10; 862-871
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena stanu nawierzchni leśnej drogi tłuczniowej w Puszczy Noteckiej po dwuletnim okresie eksploatacji
Assessment of the state of the macadam forest road in the Notecka Forest after two years of exploitation
Autorzy:
Kamiński, B.
Czerniak, A.
Powiązania:
https://bibliotekanauki.pl/articles/1026439.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
inzynieria lesna
nosnosc
nawierzchnie drogowe
Puszcza Notecka
lesnictwo
drogi lesne
drogi tluczniowe
forest road
macadam pavement
bearing capacity
pavement deflection
Opis:
The objective of the studies was to assess the bearing capacity of macadam forest roads made from ungraded crushed stone and two−layered macadam depending on earth−water conditions of the subgrade. The effect of the synthetic reinforcement of natural subgrade on the bearing capacity was also examined. Deflection in the road pavement after a two−year period of exploitation was assessed. The size of deflection was compared with the deflection module and the type of the subgrade and materials used for road construction were analysed
Źródło:
Sylwan; 2003, 147, 06; 14-21
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena nosnosci gruntowych drog lesnych
Estimation of the carrying capacity of the soil forest roads
Autorzy:
Trzcinski, G.
Kaczmarzyk, S.
Powiązania:
https://bibliotekanauki.pl/articles/972847.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
nosnosc
drogi gruntowe
lesnictwo
drogi lesne
orest road
soil basement
carrying capacity of roads
pavement deflection
Opis:
The objective of the study was to estimate the carrying capacity of forest roads with soil pavements. Deformation module and elastic deflection were used as characteristic parameters for road carrying capacity. 12 tested sections which were divided in groups were established 39 measurements using VSS and 66 measurements using deflectometr were made on all investigated segments. Average results of measurements were introduced in analysis from the particular group.
Źródło:
Sylwan; 2006, 150, 04; 65-72
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Drogi leśne stabilizowane cementem
Lesnye dorogi stabilizovannye cementom
Improving forest roads with cement
Autorzy:
Grzywacz, R.
Powiązania:
https://bibliotekanauki.pl/articles/817266.pdf
Data publikacji:
1957
Wydawca:
Polskie Towarzystwo Leśne
Źródło:
Sylwan; 1957, 101, 08
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ efektu brzegowego drogi na cechy drzewostanów sosnowych Puszczy Noteckiej
Edge-effect of the road on the Scots pine stands characteristics in the Notecka Forest
Autorzy:
Grajewski, S.M.
Mizera, P.
Powiązania:
https://bibliotekanauki.pl/articles/989417.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Puszcza Notecka
drogi publiczne
drogi o malym natezeniu ruchu
oddzialywanie na srodowisko
efekt brzegowy
drzewostany sosnowe
cechy taksacyjne
zasobnosc drzewostanu
miazszosc drzew
road−edge effect
diameter at breast height
growing stock
forest stand value
very low−volume roads
Opis:
The development of the transportation network brings both benefits and threats. Much attention is paid to soil contamination with trace elements, difficulties in animal migration, noise propagation or synanthropisation of the vegetation cover. This paper deals with the effect of provincial road No. 150 on inventory characteristics of neighboring Scots pine stands in the Notecka Forest (western Poland) – one of the larger forest complexes in Europe. Twelve rectangular experimental sites were established perpendicular to the road axis, called belt transects. Each transect consisted of 3−4 plots located at different distances from the pavement edge (fig.). Measurements and estimations were recorded for the plots. Values from all belt transects were approximated within plots at the same distance from the road and then compared using statistical methods. Observations were conducted in Scots pine stands growing on fresh coniferous forest (Bśw) and fresh mixed coniferous forest (BMśw) sites. Reduced stand density that resulted in decreased basal area, volume and growth rates were observed in the immediate vicinity of the road compared to the forest interior. Individual trees were thicker, but more often burdened with defects decreasing timber value. Any considerable effect of the road on tree height wasn't observed. The above mentioned changes were more evident in poorer habitat conditions, while the location in relation to the road had no significant effect. Modified lighting conditions are probably the main cause of these changes. At the edge of Scots pine stands in the Notecka Forest, a unique ecotone has formed under the influence of the provincial road.
Źródło:
Sylwan; 2016, 160, 11; 915-922
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 46

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