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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:
Ekonomiczny wiek rębności drzewostanów sosnowych
Economic rotation age of Scots pine stands
Autorzy:
Piekutin, J.
Skręta, M.
Powiązania:
https://bibliotekanauki.pl/articles/1008788.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
gospodarka lesna
drzewostany sosnowe
wiek rebnosci
ekonomiczny wiek rebnosci
economic rotation age
value of forest stand
Opis:
The determination of the best rotation age for trees and forest stands is one of the most decisive problems in forestry. It results from different aims of forest management. There are many criteria of selecting the product of forest utilization and deciding about stand maturity. They can be divided into biological, technical and economical ones. The most common are usually based on the rules of forest management. Different rotation age for the stand, dependent on various factors, always influences economical balance between bore costs and achieved income. Article presents the method of defining the economical rotation age based on the maximization of the income.
Źródło:
Sylwan; 2012, 156, 10; 741-749
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Potential for genetic conversion of Norway spruce Picea abies (L.) Karst. stands and methods for preserving gene resources of Istebna race in Silesian Beskid Mts
Autorzy:
Sabor, J
Powiązania:
https://bibliotekanauki.pl/articles/41439.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Silesian Beskids Mountains
Norway spruce
forest tree
Picea abies
genetic conversion
genetic value
silvicultural value
species composition
regeneration
forest site type
tree stand
population genetics
Opis:
The forests of the Silesian Beskid Mts have a specific composition with a marked dominance of Norway spruce. Although spruce stands are seriously threatened, some of them, such as those of Istebna race, show excellent genetic value. The work stresses the need for the conversion of spruce stands in the Silesian Beskid range on the basis of population genetics and describes the principles of such conversion.
Źródło:
Dendrobiology; 2004, 51 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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