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Wyświetlanie 1-15 z 32
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:
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
Tytuł:
Wpływ warunków terenowych na elementy odwodnienia drogi w projektach dróg leśnych z lat 2004–2009
Influence of terrain conditions on the elements of road drainage projects of forest roads in the years 2004–2009
Autorzy:
Trzcinski, G.
Leciejewski, P.
Powiązania:
https://bibliotekanauki.pl/articles/881243.pdf
Data publikacji:
2014
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
Tematy:
lesnictwo
inzynieria lesna
drogi lesne
projekty
odwodnienie
warunki gruntowo-wodne
Źródło:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej; 2014, 16, 4[41]
1509-1414
Pojawia się w:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Droga jako czynnik odkształcający fitocenozy leśne
Autorzy:
Andres, B.
Powiązania:
https://bibliotekanauki.pl/articles/1022582.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drogi
antropopresja
lasy
lesnictwo
przeksztalcenia srodowiska
vegetation of forest trails and roads
anthropopressure
Opis:
Vegetation of forest roads and tourist trails on which specific carpet vegetation grow is an example of extreme changes taking place under the impact of anthropopressure. Analysis of changes in the plants growing close to forest roads and paths may contribute to the identification of the main trends in the process of transformation of vegetable cover subject to trampling. It also may be the basis for determination of the degree of resistance of forest communities to tourist pressure and the possibilities and time of their regeneration after it has ceased. Regeneration capability of the vegetation destroyed by trampling after the disturbances have ceased is one of the indicators of its resistance to pressure.
Źródło:
Sylwan; 2005, 149, 05; 65-70
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mrozoodpornosc spoistego podloza drog lesnych stabilizowanego wapnem hydratyzowanym
Autorzy:
Szewczyk, J.
Powiązania:
https://bibliotekanauki.pl/articles/819080.pdf
Data publikacji:
1998
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
inzynieria lesna
stabilizatory
mrozoodpornosc
lesnictwo
drogi lesne
podloza spoiste
wapno hydratyzowane
Źródło:
Sylwan; 1998, 142, 04; 61-71
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Znaczenie elementów leśnych dróg wywozowych według opinii kierowców i zarządców dróg
Significance of the elements of forest transport roads in the opinion of the drivers and road managers
Autorzy:
Kikulski, J.
Trzciński, G.
Powiązania:
https://bibliotekanauki.pl/articles/985848.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drogi lesne
drogi wywozowe
parametry drog
opinia uzytkownikow
kierowcy
zarzadcy drog
badania ankietowe
high haulage vehicles
roads parameters
roads users
questionnaire survey
Opis:
The purpose of the study was to determine the importance of various parameters of forest roads used by heavy goods vehicles for transporting timber based on the research conducted among drivers and employees working on the road infrastructure of a forest district (road managers). The study analyzed the road parameters presented in the site plan, its vertical structure and type of surface (material). A questionnaire was sent by post to all (430) forest districts in Poland, which resulted in the receipt of 296 correctly completed surveys. Additionally, individual questionnaire interviews (82) were conducted with drivers of heavy goods vehicles (trucks with dolly or semi− −trailer, and trucks with trailer). The questionnaire used an analogue scale, where respondents marked a point corresponding to the intensity of their assessment. Non−parametric tests were used (Friedman ANOVA and Kendall compatibility factor, U Mann−Whitney) in the statistical analyses. According to drivers, the most important road parameters in the site plan are the width of intersections (widened sections in the form of arcs that facilitate turning onto a perpendicular road), the proper location of log−yards, widened curves and the roadway width. Forest district employees pointed the width of intersections and the roadway as the most important. The road elements in the situational plan are regarded as more important by drivers of vehicles with dolly or semi−trailer compared to the drivers of vehicles with a trailer, which is caused by the differences in the parameters of these vehicles (turning radius). The most important road parameter in terms of the vertical structure is its gradual course (no steep ascents and descents). The respondents attach great importance to the significance of the type of road surface used, and indicated bituminous and crushed stone pavements as the most useful on transport routes in the forest. The importance of road parameters was rated significantly higher by drivers of high tonnage vehicles. However, it should be emphasized that despite the differences found, the answers of forest district road managers also indicate that they attach great importance to having the transport roads in the forest meet specific design requirements. In general the respondents considered the parameters of all analyzed road elements important – the importance of individual parameters was evaluated to from 5 to 6.5 out of 7 pts.
Źródło:
Sylwan; 2018, 162, 12; 1038-1046
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania struktury ruchu w lesnej sieci komunikacyjnej na przykladzie wybranych nadlesnictw
Autorzy:
Trzcinski, G.
Powiązania:
https://bibliotekanauki.pl/articles/815425.pdf
Data publikacji:
1996
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
natezenie ruchu
ruch drogowy
nadlesnictwa
lesnictwo
siec drogowa
drogi lesne
struktura ruchu
Źródło:
Sylwan; 1996, 140, 05; 57-68
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przestrzenny rozkład wilgotności gruntu w obszarze przyległym do wylotu urządzeń odwadniających drogi leśne
Spatial distribution of soil moisture in the area adjacent to the outlet of forest roads drainage devices
Autorzy:
Gołąb, J.
Badach, E.
Słowik-Opoka, E.
Powiązania:
https://bibliotekanauki.pl/articles/989490.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
inzynieria lesna
drogi lesne
urzadzenia odwadniajace
stoki
wilgotnosc gruntu
rozklad wilgotnosci
rozklad przestrzenny
osuwiska
mountain forests
forest roads
drainage devices
landslides
soil moisture
Opis:
Transformation of the natural environment of human life may have different speed, depending on the number of conditions, especially the climate. There is a long−term transformation, but also the sudden changes, often having for humans the nature of disaster. An example of sudden and undesirable changes in the environment are observed in form of movements of soil on the slopes of the mountain. One of the environmental factors that determine the slope stability is the current soil moisture. Its sudden increase caused by heavy rain or spring thaw can significantly change soil physical conditions and triger landslides. Water saturation may also occur in soils of these areas, to which water from the road drainage devices flows. The aim of the study is to determine the spatial distribution of soil moisture in the outlet of the drainage facilities for forest roads in the context of changes in selected soil characteristics affecting the possibility of landslides. We selected two culverts and two open top culverts that drain the forest road in Gorce National Park. The most important for the observations was to determine the spatial distribution of soil moisture and soil moisture differences in selected locations of an outlet of the road drainage facilities in relation to the place of outlet and the unit drain line. In the analysis of measurement results, there was no significant difference between the average humidity clustered according to ‘position' and by the ‘line'. The significance of this was obtained for the average moisture grouped according to ‘depth'. This can be explained by the impermeability of land and a large decrease in the slopes in the area of research. In general, rather small soil moisture fluctuations, despite the variability of rainfall, in conjunction with significant fraction of skeleton particles, do not create conditions conducive to the formation of landslides.
Źródło:
Sylwan; 2016, 160, 10; 861-870
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 32

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