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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Pracochlonnosc pozyskiwania drewna w drzewostanach ze sniegolomami

100%
Sowa J. M., Szewczyk G., Stanczykiewicz A., Grzebieniowski W.
Leśne Prace Badawcze
|
2009
|
tom 70
|
nr 4
429-434
2
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Witalnosc drzewostanow debowych w dolinie srodkowej Odry uszkodzonych podczas powodzi w 1997 r.

84%
Dobrowolska D.
Sylwan
|
2007
|
tom 151
|
nr 07
39-48
3
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Występowanie kornika drukarza Ips typographus (L.) (Coleoptera, Curculionidae, Scolytinae) po wiatrołomie z 2013 roku w Dolinie Kościeliskiej w Tatrzańskim Parku Narodowym

84%
Grodzki W., Gasienica Fronek W.
Leśne Prace Badawcze
|
2017
|
tom 78
|
nr 2
At the end of 2013, Norway spruce stands in the area of the Tatra National Park were severely damaged by strong storms especially in the Kościeliska Valley region. In the following spring of 2014, a survey recording the occurrence of the spruce bark beetle Ips typographus (Coleoptera, Curculionidae, Scolytinae) was initiated in order to describe the dynamics of beetle reproduction in relation to protection measures executed in wind-damaged stands. Ten research plots with 20 trees each were established in a so-called active protection zone, where the broken and fallen trees had been processed and removed in 2014, and in a passive protection zone, where no actions were taken, and the dynamics of Norway spruce mortality due to bark beetle infestation including quantitative parameters (infestation density, sex ratio of beetle populations) were examined. The entomological analyses were performed on 25×25 cm large bark samples taken from four (active zone) or two (passive zone) tree sections. In the first year of the survey, no infested standing trees were recorded on the plots and the colonisation of fallen and broken trees was very weak. In the second year (2015), infestations appeared in larger numbers on the plots with passive compared to active protection but the infestation density was 0.89 mating chambers per 1 dm2 regardless of the protection status. In the third year (2016), most of the remaining living spruces had been infested with a mean density of 0.82 m.ch. per 1 dm2. In 2015, the proportion of females in the beetle population was 65.8% being higher in the active (68.4%) than the passive (64.0%) protection zone, while in 2016 the proportion was 63.5% and in this case slightly higher in the passive protection zone (63.9% as compared to 63.2%). These results are in accordance with patterns observed in wind-damaged Norway spruce stands of other areas in Poland and Europe and demonstrate the usefulness of forest management procedures in mitigating I. typographus outbreaks.
4
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Badania rozwoju uszkodzonych przez snieg dragowin swierkowych Beskidu Zywieckiego i wynikajace z nich wnioski hodowlane

84%
Zawada J.
Prace Instytutu Badawczego Leśnictwa. Seria A
|
1997
|
tom 830-334
71-84
5
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Wpływ głębokości zaburzenia na liczbę gatunków szkodników sosny pospolitej (Pinus sylvestris L.) oraz ich liczebność w borach północno-wschodniego Kazachstanu

67%
Mussayeva B., Mokrzycki T., Sarsekova D., Osserkhan B.
Sylwan
|
2019
|
tom 163
|
nr 12
The research was carried out in the economic and natural Forest Reserve ‘Yertys Ormany’ in Pavlodarsk Oblast (Kazakhstan) in 2018. In the middle of May, two barrier traps of the ‘Netocia’ type (30, in total) were installed on each research plot damaged by wind, fire and great pine web – spinning pine sawfly – Acantholyda posticalis Mats. Insects were caught every month, from mid−June to mid−August. 1521 insects belonging to 67 species and 23 families were caught in the traps. Beetles clearly dominated. We also observed a great pine web and sirex woodwasp Sirex noctilio Fabr. Of the beetles caught, 10% were thermophilic jewel beetles or metallic wood−boring beetles Buprestidae, among which Chalcophora mariana (L.) dominated. The highest average number of individuals was observed on sites damaged by A. posticalis, however, differences between the plots turned to be insignificant. The highest significant average number of species was observed on sites damaged by the fire and by the wind. The GLM analysis indicated the highest mean values of the Margalef index in plots damaged by fire and by the wind, but did not show significant differences between the average values of the fidelity index of the assemblages. The research confirmed the hypothesis of a greater number of species and individuals, and a higher diversity of pests in pine stands more strongly disturbed (i.e. damaged by the fire and by the wind). At the same time, there were no differences between the most seriously disturbed variants.
6

Efektywność maszynowego pozyskiwania drewna z drzewostanu uszkodzonego przez wiatr

67%
Stempski W., Jablonski K.
Nauka Przyroda Technologie. Uniwersytet Przyrodniczy w Poznaniu
|
2015
|
tom 09
|
nr 3
7

Zagospodarowanie powierzchni uszkodzonych w wyniku klęski oblodzenia z 2013 roku na terenie Nadleśnictwa Lubaczów

67%
Szafran G.
Postępy Techniki w Leśnictwie
|
2017
|
tom 137
8
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Szacowanie szkód spowodowanych przez wiatr w drzewostanach przy wykorzystaniu zobrazowań satelitarnych i danych Systemu Informatycznego Lasów Państwowych

67%
Ciesielski M., Balazy R., Hycza T., Dmyterko E., Bruchwald A.
Sylwan
|
2016
|
tom 160
|
nr 05
The aim of the study was to evaluate the area and volume of the windthrows caused by a downburst, which occurred early morning on July 8th , 2015 in the Międzylesie Forest District (south−western Poland). The wind velocity reached 270 km/h and the phenomenon caused damages similar to those observed after the hurricane. The most affected forest ranges included: Różanka, Nowa Wieś, Lesica, Goworów, Jodłów and Smreczyna. To evaluate the area of the windthrow in particular forest stands, the remote sensing data were used, whereas to estimate the total wood volume we applied the growth model and the average volume of the particular forest stands, gathered in the State Forests Information System (SILP) database. The volume of the windthrow evaluated by the forest rangers during some local investigation equaled 103 thousands m³, while one calculated using the SILP database – 161 thousands m³ and with the growth model – 168 thousands m³. The forest service estimations were underestimated. According to the model of the wind damage risk, most of the forest stands in the Międzylesie Forest District were highly or very highly endangered by the strong winds. The presence of the windtrhow is very dangerous either for people or the surrounding forest (due to the risk of pests outbreak). Therefore it demands immediate decisions and actions from the forest service, which need reliable and quickly accessible data. The information provided with the satellite imagery, the risk model and the growth model may accelerate the decision−making process and optimize the damage disposal. Satellite imagery also enables to estimate the amount of damage on the areas, which are hardly available for the foresters and their vehicles. Due to their high usefulness, growing availability and declining prices, these tools should be introduced to local forestry as quickly as possible.
9

Proces rozpadu drzewostanów świerkowych w Beskidzie Śląskim i Beskidzie Żywieckim w następstwie gradacji owadów kambiofagicznych i grzybów patogenicznych oraz sposówb zagospodarowania tych drzewostanów w latach 2003-2015

67%
Szabla K.
Postępy Techniki w Leśnictwie
|
2017
|
tom 137
10
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Występowanie kornika drukarza Ips typographus (L.) i rytownika pospolitego Pityogenes chalcographus (L.) w drzewostanach świerkowych uszkodzonych przez wiatr w Górach Świętokrzyskich

67%
Borkowski A.
Leśne Prace Badawcze
|
2011
|
tom 72
|
nr 1
11

Przebieg masowego pojawu brudnicy mniszki (Lymantria monacha L.) i jej zwalczania w Polsce w latach 1978-1985 oraz regeneracja aparatu asymilacyjnego w uszkodzonych drzewostanach

67%
Sliwa E.
Prace Instytutu Badawczego Leśnictwa
|
1989
|
nr 710
12
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Wpływ postępowania ochronnego na występowanie kornika drukarza Ips typographus (L.) w Dolinie Kościeliskiej w Tatrzańskim Parku Narodowym

67%
Grodzki W., Gasienica Fronek W.
Sylwan
|
2018
|
tom 162
|
nr 08
In the end of 2013 the Norway spruce stands in the Kościelska Valley in the Tatra National Park (S Poland) were severely damaged by the wind. In the next year about 22,000 m³ of timber from broken and fallen trees was processed and removed from the active protection zone, whilst in the strict protection zone those trees were left. In 2014, when the presented survey started, the infestation of lying and surrounding standing trees was very low, but starting from 2015 an intensive bark beetle Ips typographus outbreak affected the survived stands. No−intervention strategy was implemented by the national park in both zones, regardless their formal status at that time as well. In 2015 a set of 10 observation plots (200 trees in total) was established in both active and passive (strict) protection zones (5 plots in each zone). In 2017 a new set of 12 plots (240 trees in total) was installed (6 plots in each zone). On each plot the breast height diameter of all trees was measured and the relative mortality of trees (share of attacked spruces) was recorded each year. The infestation density and sex ratio were defined on the 25×25 cm bark samples taken from 138 trees in 2 trunk sections located 1.5−2.0 above the ground and in the midway between tree and crown bases. The bark beetle attack on living spruces in 2015 differed between the active and strict protection zones. The relative tree mortality was lower in active than in passive protection zone (20 and 39% respectively), but later it gradually came to be similar in both parts of the area (73.3 and 77.5%, respectively in 2017). In the initial outbreak phase, thinner (weaker) trees were attacked, and in the following years – stronger ones, although in the active protection zone the opposite pattern occurred initially. The attack density decreased in subsequent years, being higher in active protection zone, with gradually decreasing difference between zones. Thicker trees were attacked with lower intensity. The share of females, higher in active protection zone (68.2 vs. 63.9%), gradually decreased to (57.9 vs. 51.2%). The initial decrease of bark beetle attack intensity in the active protection zone gradually disappeared after the no−intervention strategy was applied. The resulting extended bark beetle infestation and its increasing intensity in both parts of the area, demonstrate the appropriateness and effectiveness of active protection measures applied in 2014.
13

Czarny czy Zielony Trójkąt? Przyczyny i przebieg klęski ekologicznej w Sudetach. Cz. I

67%
Jadczyk P.
Ekonatura
|
2005
|
nr 02
14

Zrywka w śniegołomach

67%
Drwal. Pismo Przedsiębiorców Leśnych
|
2014
|
nr 12
15

Wiatrołom, śniegołom - co dalej?

67%
Gil W.
Poradnik Leśniczego
|
2013
|
tom 01
|
nr 03
16

Przepraszamy, zamknięte!

67%
Gil W.
Echa Leśne
|
2010
|
nr 10
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