Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "thinning" wg kryterium: Temat


Wyświetlanie 1-5 z 5
Tytuł:
Uszkodzenia drzew i odnowienia w wyniku ręczno-maszynowego pozyskania drewna z wykorzystaniem urządzeń agregowanych z ciągnikami rolniczymi
Damage to trees and regeneration as a result of motor-manual timber harvesting using equipment aggregated with farm tractors
Autorzy:
Stańczykiewicz, A.
Powiązania:
https://bibliotekanauki.pl/articles/973972.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
odnowienia lasu
pozyskiwanie drewna
procesor HYPRO
procesor NIAB 5-15
technologia pozyskiwania
uszkodzenia drzew
wciagarka Fransgard 6000 GS
ciecia pielegnacyjne
zebiegi pielęgnacyjne
agregaty ciągnikowe
ciągniki rolnicze
drzewostany młode
leśnictwo
drzewa leśne
thinning processor
cable winch
farm tractor
selective early thinning
pine stands
Opis:
The research was conducted in thinned pine stands, age class II, where cutting was carried out with chainsaws. Subsequent operations were performed using a NIAB 5−15 and HYPRO 450 delimber−bucker processor and a FRANSG RD 6000 cable winch aggregated with farm tractors. The timber harvesting technology was applied with a cut−to−length system using processors, and with a tree−length system using a cable winch. In the selected stands, nine study plots were established, in which the inventory of stand layers: trees and undercanopy regeneration was carried out twice (before and after felling). Based on the obtained data, the level of damage to trees and regeneration after thinning operations was calculated. In the case of the technology using processors, the level of damage to trees in individual manipulation plots was within the range of 4.3%−8.6% (total 7%), while for the winch technology it was from 3.1% to 5.8% (total 4.5%). As regards regeneration, damage resulting from the harvesting and skidding of timber using processors in individual manipulation plots was at a level of 4.1%−13.5% (total 8.5%) and damage resulting from the harvesting and skidding using a winch cable from 5.8% to 17.0% (total 9%).
Źródło:
Sylwan; 2011, 155, 02; 129-137
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Uszkodzenia drzew w następstwie trzebieży wczesnych w nizinnych drzewostanach świerkowych
Tree damage in lowland spruce stands caused by early thinnings
Autorzy:
Bembenek, M.
Giefing, D.F.
Karaszewski, Z.
Mederski, P.S.
Szczepańska-Alvarez, A.
Powiązania:
https://bibliotekanauki.pl/articles/991597.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
uzytkowanie lasu
drzewostany nizinne
trzebiez wczesna
drzewostany swierkowe
swierk
uszkodzenia drzew
spruce
tree damage
timber harvest methods
early thinning
Opis:
The paper presents analysis of tree damage after early thinning in lowland spruce stands. Percentage of tree with damage and weighted damage index (WDI) were considered. Three different thinning operations were analysed, in which different cutting method was applied. The smallest level of damage was observed when short wood system (SWS) was used. There were no significant differences between frequency of damage when full tree (FTS) and long wood (LWS) systems were compared.
Źródło:
Sylwan; 2013, 157, 10; 747-753
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Uszkodzenia drzew w nizinnych drzewostanach świerkowych podczas zabiegu trzebieży późnej
Tree damage in lowland spruce stands because of late thinning
Autorzy:
Bembenek, M.
Giefling, D.F.
Karaszewski, Z.
Mederski, P.S.
Szczepańska-Alvarez, A.
Powiązania:
https://bibliotekanauki.pl/articles/993989.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
uzytkowanie lasu
drzewostany nizinne
trzebiez pozna
pozyskiwanie drewna
metody pozyskiwania drewna
drzewostany swierkowe
swierk
uszkodzenia drzew
norway spruce
tree damage
thinning operations
Opis:
The paper studies tree damage after late thinning operation in lowland spruce stands. The research was done in the 4ͭʰ age class stands, where three different methods of timber harvesting were applied: full tree system (FTS), long wood system (LWS), short wood system (SWS). The lowest level of damage was observed in SWS.
Źródło:
Sylwan; 2013, 157, 12; 892-898
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rozmiar uszkodzeń drzew pozostających podczas nasiębiernej zrywki w drzewostanie sosnowym przy wykorzystaniu posztucznej metody szacowania
Size of the damage to the trees remaining during the digging skidding in Scots pine stand using the original method of estimation
Autorzy:
Wójcik, K.
Powiązania:
https://bibliotekanauki.pl/articles/978984.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany sosnowe
zrywka drewna
zrywka nasiebierna
forwardery
uszkodzenia drzew
leśnictwo
oddziaływanie na las
metody szacowania szkód
damaged trees
frequency of injuries
selective thinning
skidding
forwarder
Opis:
The purpose of the research was to present problems related to the damage to the stand resulting from the scraping works performed on its surface, mainly with the use of forwarder skidding. The research was conducted in thinned Scots pine stands in the IV and V age class in the Wipsowo Forest District (northern Poland). In the selected stands we carried out the inventory of the stand layers. Based on the obtained data, the level of damage to trees after thinning operations was calculated. Damage resulting from the skidding with forwarder in the individual manipulation plots was at a level of 18.2−18.7% in the method used by the Wipsowo Forest District, while in the method proposed by the author damage level equaled 3.9−9.8%. It was found out that the highest number of damage occurred in the belt up to 5 m from the skidding trail, especially at the width of the trails below 4 m. The damage is most affected by the stand density – the higher it is, the more trees are damaged.
Źródło:
Sylwan; 2020, 164, 03; 216-225
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ sposobu zrywki i doświadczenia wykonawcy na wielkość uszkodzeń drzew na powierzchniach trzebieżowych Nadleśnictwa Chojnów
Influence of skidding method and the contractors experience on the size of tree damage on the thinning areas in the Chojnow Forest District
Autorzy:
Maciak, A.
Popczyński, B.
Powiązania:
https://bibliotekanauki.pl/articles/980293.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drzewostany potrzebiezowe
pozyskiwanie drewna
zrywka drewna
zrywka nasiebierna
zrywka nasiebierna laczona z wleczona
uszkodzenia drzew
operatorzy maszyn lesnych
doswiadczenie zawodowe
Nadlesnictwo Chojnow
thinning
skidding
forwarder
tractor ground skidding
damage to trees
Opis:
Skidding includes timber transport from the place of its harvest to the place of its storage, loading or pre−treatment. This process in the thinned stands can result in serious damage to the remaining trees. The purpose of the described research was to characterize and compare the size and location of damage in the thinned stands after forwarder skidding with the damages resulting from the combined forwarder and tractor ground skidding. These tests also aimed at determining whether the contractor’s experience affects the level of damage. The research was carried out on four study plots located in the Chojnów Forest District (C Poland). Although the works on each plot were performed by different contractor, they had equipment of comparable technical and overall parameters.The height of the damage, the distance of the damaged tree from the skidding trail and the size of the damage were measured. Damage was classified according to the degree of the tissue damage. The most serious damage occurs at a distance of up to 1 m from the skidding trail and at a height of up to 1 m. The most severe damage was over 1/8 of the trunk perimeter. No significant dependence of the size and location of damages on the skidding method was found.The highest fraction of the damaged trees was recorded on the area in the Młochów Forest Range (5.17%) where only the forwarder skidding took place. In the Sierzechów Forest Range (the same method of skidding, but almost twice as dense stand), there was significantly less damage (0.62%). In this case, the share of the damaged trees was the smallest, despite the highest number of trees. The reason for this may be the impact of the human factor on the amount of damage as the most experienced contractor worked on that study plot.
Źródło:
Sylwan; 2019, 163, 01; 25-34
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

    Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies