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Wyszukujesz frazę "silvicultural treatments" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
System planowania urządzeniowego w lasach różnowiekowych
System of management planning in uneven-aged forests
Autorzy:
Banaś, J.
Powiązania:
https://bibliotekanauki.pl/articles/1008979.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
urzadzanie lasu
planowanie
procesy decyzyjne
drzewostany roznowiekowe
fazy rozwojowe
uneven−aged forests
management planning
silvicultural treatments
catchment
Opis:
In the presented forest planning system, decisions are being made at several stages related to the management planning units: catchment area, stand and forest management unit. Management operations are planned with regard to the development phase of a stand and no its age. Stands in which silvicultural treatments are to be carried out are selected after a detailed analysis of natural factors and an economic analysis. The discussed planning system can be an important tool supporting forest ecosystem management in the multiple−use forestry model currently in use.
Źródło:
Sylwan; 2010, 154, 07; 456-462
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Poszukiwanie racjonalnych rozwiązań w hodowli lasu
Autorzy:
Bernadzki, E.
Powiązania:
https://bibliotekanauki.pl/articles/1022669.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
odnowienia lasu
racjonalizacja
hodowla lasu
lesnictwo
zabiegi pielegnacyjne
rationalisation of silvicultural treatments
self−regulatory processes
thinning
future−tree method
Opis:
The paper presents rational silvicultural solutions in forest regeneration and tending carried out in the countries featuring high level of forest management. The basis of these concepts is aimed at better utilization of the self−regulatory processes of forest ecosystems, and reduction of active treatments to a necessary minimum.
Źródło:
Sylwan; 2005, 149, 12; 21-29
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ leśnych zabiegów hodowlanych na nietoperze
Impact of silvicultural treatments on bats
Autorzy:
Burgiell, P.
Powiązania:
https://bibliotekanauki.pl/articles/986693.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
oddzialywanie na zwierzeta
fauna
nietoperze
Chiroptera
ekologia zwierzat
bats
ecology
silvicultural treatments
forest management
lesnictwo
lasy gospodarcze
gospodarka lesna
zabiegi hodowlane
Opis:
The paper synthesizes the knowledge on the impact of silvicultural treatments on bat populations. Forest management affects stand structure and composition, and silvicultural treatments exert both positive or negative impact on the activity of individual bat species. Studies published on the issue suggest that forest management may prove useful for the conservation of bat populations, especially in areas that are important to bats. Harvesting system influences spatial and age patterns as well as the share of open woodland areas in forests, which are used by majority of bat species. In particular, polycyclic harvesting systems result in a mosaic of open midforest areas of various size such as clearcuts, group shelterwood cuts and gaps in forest stands, which are very attractive for aging habitats to bats. Common noctules and parti−coloured bats prefer to hunt by flying at high speeds and altitudes above open midforest areas such as clearcuts and group shelterwood cuts. Serotine bats and Nathusius' pipistrelles use smaller gaps and stands treated with shelterwood cuts. Barbastellas and Bechstein's bats prefer more cluttered foraging habitats in dense vegetation and canopy, while long−eared bats fly slower and glean their prey from plants. Selection cutting and irregular group shelterwood methods, which have the fewest cutting constraints, contribute most significantly to creating a mosaic of diversely structured stands and open midforest areas. Forest stands managed with such harvesting systems are the most preferred foraging sites for the largest number of ecomorphological groups of bats. The thinning of trees at younger age reduces density, thus opening up new foraging sites or providing access to such sites to bats, which fly fast, but are less manoeuvre (e.g. common noctules). The loss of roosting habitats for maternity colonies due to tree cutting or microclimate changes in forest stands is the greatest threat from the forest management. Silvicultural treatments affect the structure of forest stands and, in consequence, bat populations. Sustainable forest management may be useful for bat conservation. Forest stands with diverse structure as well a mosaic of variously−sized midforest areas provide the best foraging and mating conditions for the highest number of bat species.
Źródło:
Sylwan; 2017, 161, 09; 738-747
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ stosowanych zabiegów pielęgnacyjnych i rębni na zmianę struktury genetycznej drzewostanów
The effect of tending treatments and cutting systems on the genetic structure of stands
Autorzy:
Sabor, J.
Powiązania:
https://bibliotekanauki.pl/articles/1026480.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
oddzialywanie na las
drzewostany
rebnie
selekcja naturalna
lesnictwo
zmiany struktury genetycznej
zabiegi pielegnacyjne
genetic variability
silvicultural treatments
natural selection
heterozygousness
mating
forest sustainability
Opis:
Modern forestry puts effect to ensure the genetic and ecosystemic variability. The paper points to the role of natural selection and maintenance of forest sustainability and provides the characteristic of stands as genetic population and the description of mating systems and their impact on the heterozygous level in trees, as well as of the mechanism of the gene transfer. This is the background to determine genetic effects of the selection and tending treatment such as grading of seeds and seedlings, early and late cleaning, thinning and final felling on forest cultivation.
Źródło:
Sylwan; 2003, 147, 02; 39-48
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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