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Wyszukujesz frazę "forest roads" wg kryterium: Temat


Wyświetlanie 1-6 z 6
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
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:
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:
Wpływ szlaków zrywkowych założonych w czasie czyszczeń późnych na kształtowanie się niektórych cech drzew
The effect of strip roads established during late cleanings on the selected parameters of trees
Autorzy:
Giefing, D.F.
Karaszewski, Z.
Ziemski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/1026334.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
szlaki zrywkowe
oddzialywanie na rosliny
lasy
uzytkowanie lasu
czyszczenia pozne
lesnictwo
zabiegi pielegnacyjne
strip roads
forest environment
timber harvesting
timber extraction
Opis:
Different opinions concerning strip roads indicate the need to recognise the consequences of their establishment for the environment. The hypothesis has been put forward that the strip width exerts diverse effects on the neighbouring stands. The effect of strip roads on the selected parameters of trees and forest floor vegetation has been assessed.
Źródło:
Sylwan; 2003, 147, 03; 11-18
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmiany powierzchni leśnych będących w zarządzie Lasów Państwowych wynikające z rozwoju infrastruktury dróg publicznych
Changes in the forest area under the management of the State Forests resulting from the development of public road infrastructure
Autorzy:
Trzciński, G.
Powiązania:
https://bibliotekanauki.pl/articles/985822.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Panstwowe Gospodarstwo Lesne Lasy Panstwowe
lasy panstwowe
zmiany powierzchniowe
infrastruktura drogowa
drogi publiczne
rozwoj infrastruktury
public roads
land management and planning
forest land
Opis:
The economic development of the country is very much dependent on the development of the transport infrastructure, which is one of the main priorities of the state policy included in the planning and development documents. Ensuring a efficiently functioning transport system, primarily the network of roads, involves the need to improve the technical characteristics of existing roads or to build new sections. With the linear nature of road investments, we deal with interference in significant areas that have direct and indirect effects. The aim of the study was to analyze the impact of investments realized for different categories of public roads on the area of land needed to be excluded from forest production. The structure and area of the land as well as the number of forest superintendents transferred areas were also analyzed. The study was conducted for forest areas managed by the State Forests National Forest Holding (SF NFH). Data on the area of the transferred forest land was obtained from SF NFH units and the General Directorate of National Roads and Motorways (GDDKiA). In the years 2012−2015, SF NFH units transferred the land into the management of GDDKiA 203 times with the total area of 617 ha. In the same period, the transfer of the land ownership to local government for voivodship, county and municipal roads took place in 388 cases and covered 556.6 ha. Since 2003 (i.e when special act on road investments came into force), the area of the transferred land amounted to 282.7 ha in Toruń, 78.6 ha in Gdańsk and 558.4 ha in Poznań regional directorates of the State Forests. There was a decrease in the area of the transferred lands depending on the category of public roads, while the highest number of events for municipal roads was observed. There is a great variability in the time, number and area of property transferred to public roads.
Źródło:
Sylwan; 2018, 162, 02; 110-117
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 1-6 z 6

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