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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Stochastyczny model określania miąższości złomów, wywrotów i posuszu

100%
Bruchwald A., Dmyterko E.
Sylwan
|
2014
|
tom 158
|
nr 04
The most recent version of the wind damage risk model was published in 2012. The model is based on eleven stand characteristics of which stand damage that occurred in the last decade is among the most important ones. It is expressed as the volume of wood obtained from wind−broken and wind−thrown trees as well as of deadwood. Not taking this feature into consideration would undermine the value of this damage risk factor. In the study, the material contained in the database of the State Forests Information System was used to develop a model for calculating the volume of wood obtained from wind−broken and wind−thrown trees as well as of deadwood. This allowed to apply the stand damage risk model to determine, inter alia, the risk of damage in a multi−variant forecast of timber resources.
2
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Metody oraz koszty i oplacalnosc pozyskiwania drewna ze zlomow i wywrotow

100%
Suwala M.
Sylwan
|
2004
|
tom 148
|
nr 03
63-71
3

Trafiony złomem

84%
Kacowski K.
Nowa Gazeta Leśna. Miesięcznik Wszystkich Pracujących w Lesie
|
2012
|
nr 12
4

Posusz, złomy, wywroty jako elementy planowania i pozyskania w Nadleśnictwie Krasnystaw w latach 2006–2015

84%
Bujoczek L., Szewczyk A., Zygmunt R., Bujoczek M., Zieba S., Banas J., Kozuch A.
Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria
|
2019
|
tom 18
|
nr 2
5

Brzozowy złom i graby

84%
Kacowski K.
Nowa Gazeta Leśna. Miesięcznik Wszystkich Pracujących w Lesie
|
2014
|
nr 08
6

Pozyskanie drewna w drzewostanach poklęskowych. Cz.2. Usuwanie złomów

84%
Tomczak A., Grzywinski W., Jelonek T.
Nowa Gazeta Leśna. Miesięcznik Wszystkich Pracujących w Lesie
|
2012
|
nr 11
7

Harwesterem po klęsce?

84%
Nowa Gazeta Leśna. Miesięcznik Wszystkich Pracujących w Lesie
|
2014
|
nr 10
8

Przyczynek do zagadnien ekonomicznych pozyskiwania drewna ze zlomow i wywrotow

84%
Suwala M.
Prace Instytutu Badawczego Leśnictwa. Seria A
|
2003
|
nr 2[952-955]
103-105
9
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Zmiany zachodzące w lasach Ziemi Kłodzkiej w latach 2001-2017

67%
Dmyterko E., Bruchwald A.
Sylwan
|
2019
|
tom 163
|
nr 08
The aim of the study was to assess the changes occurring in the forests of the Kłodzko Region in the recent period (2001−2017), with particular emphasis on the species composition of the stands, their share in age classes and the structure of harvested timber, including live trees, deadwood, wind−broken and wind−fallen trees. The Kłodzko Region located in the Sudety Mountains (SW Poland) covers the forests of four forest districts: Lądek−Zdrój, Międzylesie, Bystrzyca Kłodzka and Zdroje. The declining share of spruce stands (from 83.5% in 2001 to 75.5% in 2017) and the increasing share of beech and larch as well as sycamore stands indicate that these forests are systematically rebuilt. The average age of the stands is very high (81 years). The share of young (<20 years old ) stands is low (only 5%), while those older than 100 years constitute about 35%. The 21st century saw a serious damage to the investigated forests caused by frequent strong winds and long−lasting droughts in the growing seasons. The three hurricanes that took place in the analysed period were the cause of the removal of 1.1 million m³ of timber in the form of wind−broken and wind−fallen trees. The drought in the growing season in 2015 resulted in the salvage harvest of deadwood with a total volume of 1.6 million m³, which corresponds to the volume of four annual allowable cuts determined for the undisturbed growth conditions of trees in the area under research. Using the wind damage risk model, the threat measure Ms reaching a value of above 40 was calculated for the forests of the Kłodzko Region, which are currently among the most threatened in Poland. This threat results mainly from the high share of spruce stands in older age classes with high average height and gaps after previous hurricanes as well as from a large area of stands located at high elevations.
10

Zagospodarowanie poklęskowe Puszczy Knyszyńskiej

67%
Maslowski M., Sienkiewicz M.
Postępy Techniki w Leśnictwie
|
2017
|
tom 137
11
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Zmiany zachodzące w lasach Beskidu Małego

67%
Dmyterko E., Bruchwald A.
Sylwan
|
2019
|
tom 163
|
nr 03
Like in the Beskid Śląski and Żywiecki Mts., the dieback of Norway spruce stands takes place also in the Beskid Mały range. This process is clearly more intensive and occurs over a longer period of time. The conversion of these forests during the study period (2004−2016) resulted in a significant increase in the proportion of beech and fir as well as other, mostly deciduous tree species (tab. 1). The dieback of spruce forests is likely to continue, as the share of spruce in some forest complexes is still high. The age class structure of forests during the study period was found to have a negative effect on the stability and uniformity of forest growth – the young stands fraction was too low and decreased (tab. 3). The high average age of stands, which increased from 67 in 2007 to 71 years in 2016 was also unfavourable. The volume of harvested timber was rather high and approximated to the volume of allowable cut determined by the stand growth model (so−called model volume) (figs. 1, 2). In the Andrychów Forest District the harvested volume was significantly lower than the model volume, while in Jeleśnia and Bielsko districts it was significantly higher, which results from higher proportion of spruce in these regions. In the harvested timber structure, the share of wind−broken and wind fallen trees was about 10%, which is not high for the mountain area (fig. 3). The exception was in year 2005, when timber removals after the hurricane of November 2004 were estimated at more than 30%. In 2006−2008, the volume of deadwood was high and consisted mainly of spruce (fig. 4). Then the dieback of spruce forests decreased and was observed predominantly in the western and southern parts of the forest complex. The years 2013−2016 saw a high share of live trees in the harvested timber volume (over 80% of the model volume) (fig. 5). In some parts of the Beskid Mały forests, the harvest of live trees exceeded 300% of the model volume. Such high harvest is justified by the need of urgent silvicultural tasks to be carried out, especially stand conversion. The threat to the Beskid Mały forests from wind is high and remained at the same level throughout the study period – the threat measure Ms was ca. 33 (fig. 6). It is essential to lower the level of threat to these forests by, inter alia, increasing the area of young stands.
12

Pniaki i tylce jodlowe miejscem rozwoju kambio- i ksylofagow w Swietokrzyskim Parku Narodowym

67%
Wojtas J.
Parki Narodowe i Rezerwaty Przyrody
|
2004
|
tom 23
|
nr 1
27-25
13

Pozyskiwanie drewna ze zlomow i wywrotow

67%
Suwala M.
Głos Lasu
|
2002
|
nr 03
5-9
14
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Dynamika procesu zamierania drzew w Sudetach w latach 2002-2018

59%
Bruchwald A., Dmyterko E., Mionskowski M., Wrzesinski P.
Sylwan
|
2019
|
tom 163
|
nr 12
The aim of the study was to present two issues concerning forests in the Sudety Mts. (SW Poland): 1) the process of tree mortality in individual years in the period between 2002 and 2018, as well as 2) the analysis of the radial growth of the main tree species (i.e. spruce, larch, beech, fir and Douglas fir). The intensity of the process of tree mortality is evidenced by the volume of wind−broken or wind−fallen trees and deadwood. The record volume of post−hurricane wood was harvested after the hurricane ‘Cyril’ (January 2007). The volume of wood removed in 2007−2008 amounted to 1.4 million m³. Quite a high share of wind−broken and wind−fallen trees in the volume of harvested wood raw material concerned the years 2002, 2003, 2006, 2008 and 2018. In the latter year, the damage was caused by the hurricane ‘Grzegorz’. The record removal of deadwood occurred in 2016 following an exceptionally severe drought in the 2015 growing season. The high volume of deadwood in 2017 and 2018 was augmented by quite a high volume of wind−broken and wind−fallen trees. Spruce and larch showed the strongest response to severe drought in 2015 by lowering the increment in diameter and producing a narrow layer of latewood, while the response of beech and Douglas fir was the slightest. No such response was found in fir. The main tree species in the Sudetes is spruce, which quickly disappears from this area. It is necessary to look for such species of trees that might replace spruce, i.e. species more suitable to changing climatic conditions, such as beech, oak, ash, sycamore, pine and larch – but also fir and Douglas fir. The latter two species show a high tolerance to changing climatic conditions, and a high potential in the production of wood.
15

Drewno do Puszczy. Drzewiarze z Hajnówki dziwią się leśnikom

59%
Wostek M.
Las Polski
|
2011
|
nr 09
16

Wichura nad lasem

51%
Krajewski J.
Las Polski
|
1997
|
nr 19
16
17

Szkody abiotyczne w lasach w latach 1999-2004

51%
Stocki J.
Las Polski
|
2004
|
nr 15-16
26-28
18

Szkody od wiatru w RDLP w Krakowie

51%
Kolodziejczyk M.
Las Polski
|
2005
|
nr 04
12-13
19

Lasy nieco zdrowsze

42%
Stocki J.
Głos Lasu
|
2005
|
nr 03
20-24
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