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Tytuł:
Contribution to knowledge of fungal biota of Kampinos National Park (Poland): part 3
Autorzy:
Gierczyk, B.
Szczepkowski, A.
Slusarczyk, T.
Kujawa, A.
Powiązania:
https://bibliotekanauki.pl/articles/2197178.pdf
Data publikacji:
2019-08-20
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
forest damage
fire damage
post-fire forest
macromycete
micromycete
Basidiomycota
Ascomycota
Kampinos National Park
Opis:
We present interesting findings from the final year (2018) of the project concerning fungi in the fire-damaged forests in Kampinos National Park (central Poland). Seven taxa have been collected which are new to the park, one species (Scutellinia patagonica) hitherto unrecorded in Poland has been found. The current number of macromycetes taxa known from Kampinos National Park has reached 1,611.
Źródło:
Acta Mycologica; 2019, 54, 2; 1129
0001-625X
2353-074X
Pojawia się w:
Acta Mycologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Model składu gatunkowego drzewostanu dla lasów w Sudetach z uwzględnieniem zmian klimatycznych
Species composition model for the forests of the Sudety Mountains with regard to climate change
Autorzy:
Dmyterko, E.
Bruchwald, A.
Mionskowski, M.
Brzeziecki, B.
Powiązania:
https://bibliotekanauki.pl/articles/979139.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
abiotic and biotic factors
climatic change
forest damage
forest functions
stand composition
Opis:
Climate change creates a big challenge for forest science. One of several problems calling for urgent solution concerns the elaboration of the scientific foundations for determination of the species composition of forest stands under changing environmental conditions. This problem is particularly acute in case of declining Norway spruce stands in the Sudety Mountains (SW Poland). The paper presents the main principles used to develop a model allowing determination of the most desirable species composition for any given forest stand occurring in the Sudety region. These principles include: 1) an assumption that a basis for species composition planning should be a forest site type, corrected by means of site index of the currently existing forest stand, 2) a supposition that one should broadly consider present processes taking place in Sudety stands, particularly, an intense forest dieback caused by recurring drought periods and strong winds, 3) a postulate that one should consider the differences between tree species in respect to their reaction to particular abiotic factors, 4) an assumption that majority of stands should consist of several different tree species, 5) an assumption that introducing on a wide scale Douglas fir, well−adapted to the conditions of the Sudety Mountains, is allowed, 6) an idea that one should take into account differentiated production potential and varied timber quality of particular tree species, 7) an assumption that one should consider the main features of topography (altitude, exposition, slope) as well as 8) fine elements of micro−topographical situation, as a basis for introduction of different tree species. The results obtained by means of the model based on the above mentioned principles are presented on the example of two forest districts: Lądek−Zdrój (fig. 4a, b) and Szklarska Poręba (fig. 5a, b). In both cases, a necessity to diminish the share of Norway spruce and to increase the share of such species like common beech, silver fir, Douglas fir and European larch is demonstrated. One may expect that projected compositions, taking into account the most appropriate tree species and their most suitable localizations, will allow establishment of forest stands which will be more resistant to drought and wind and, thus, will be more able to fulfill several important forest functions (related to water and soil protection, protection of forest biodiversity and timber production).
Źródło:
Sylwan; 2020, 164, 06; 454-466
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Urządzanie i monitoring lasu a ustalanie stref uszkodzenia lasu i stopni uszkodzenia drzewostanów
Forest management and monitoring versus establishment of forest damage zones and degrees of stand damage
Autorzy:
Gołojuch, P.
Beker, C.
Powiązania:
https://bibliotekanauki.pl/articles/989694.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
lasy
monitoring
uszkodzenia drzewostanow
strefy uszkodzen lasu
stopien uszkodzenia
zagrozenia lasu
forest damage
management
Opis:
In years 1970−2002, in Poland forest damage zones were distinguished within the framework of forest management works. Since 2003 degrees of stand damage have been determined. This study presents basic characteristics of the methods employed for these purposes concerning the necessity to elaborate a new method of determination of degrees of stand damage. The establishment of forest damage zones and degrees of stand damage cannot be treated as one of the forms of monitoring because in order to determine their range, no observations on the permanent plots and – within their confines – on the same sample trees were and are carried out. Over the time, evaluation criteria or/and ways of establishment of the extent of damages have been undergoing considerable and significant methodological changes and modifications. In terms of dynamically altering quantitative and qualitative impact of different factors affecting forest environment, 10 years period of observation repeatability is far too long to use this information as an indicator of occurring changes. In practice, it was and it still is impossible to determine objectively trends and directions of changes taking place in a given object, which is one of the objectives of forest monitoring. The concept of damage zone should be understood not only as an area of grouping the stands of the same or similar damage, but, equally importantly, as those which happen to be under the influence of the same factor exerting its influence at the same level. Therefore, when determining the range of zones, the following three actions should be taken into consideration simultaneously: complex crown evaluation, dendrometric measurements and monitoring of the effect of the causative agent. In order to trace the trends of the changes on the study plots, the same sample trees must be subjected to evaluations and measurements. From the point of view of the time perspective, examinations should be carried out every 5 years (assessment of the crown condition and dendrometric measurements) or on a continuous basis (monitoring of the effect of the causative agent) irrespective of the forest taxation. It is also advisable to consider possible use of contemporary remote sensing techniques to determine the range of zones and degrees of damage, which preliminary can be used to establish the range, intensity and kind of the damages.
Źródło:
Sylwan; 2015, 159, 01; 13-21
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Satellite imagery for the improvement of SOZO database – the case study in Central Sudetes and High Sudetes
Zobrazowania satelitarne jako źródło zasilenia tematycznej bazy danych przestrzennych SOZO – na przykładzie Sudetów Środkowych i Wysokich
Autorzy:
Kopańczyk, K.
Fitrzyk, M..
Powiązania:
https://bibliotekanauki.pl/articles/341466.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Przyrodniczy we Wrocławiu
Tematy:
SOZO database
vegetation indices
polygon-based forest damage classe
baza danych SOZO
indeks wegetacyjny
klasa degradacji lasów
Opis:
SOZO database and its cartographic model – a sozological map is a thematic data source that represents the state of natural environment, as well as the causes and effects of both positive and negative transformations occurring in the environment. There is no doubt that the SOZO database should be a tool to investigate and evaluate the state of natural environment in a quantitative manner. However, the analysis of chosen features in the database reveals that they seem to be insufficient for conducting spatial analysis. The crucial problem is related to classes of forest damage represented by point features in a database without the extent of forest degradation. This type of presentation has limited use for geospatial analysis of environment therefore the Authors propose to use remotely sensed data to enhance SOZO database with updated data together with the spatial occurrence of the studied phenomenon. This research presents the potentials of determining class of forest damage based on the vegetation indices (NDVI and NDII) that successfully replaces the point-feature class of forest damage with polygon-based classes, thereby introducing the new quality of the data into the environmental database and make SOZO database a useful product in spatial analysis.
Tematyczna baza danych przestrzennych SOZO wraz z jej kartograficznym modelem – mapą sozologiczną przedstawia stan środowiska przyrodniczego, przyczyny i skutki zmian zachodzących w tym środowisku oraz formy i sposoby ochrony jego naturalnych wartości. Nie ulega wątpliwości, że baza SOZO powinna służyć do analizy i oceny stanu środowiska naturalnego w postaci wskaźników i miar ilościowych. Jednakże, analiza wybranych warstw bazy wskazuje na pewne jej braki, które sprawiają, że wykonanie analiz przestrzennych jest niemożliwe. Dotyczy to m.in. warstwy klasy degradacji lasów reprezentowanej w postaci geometrii punktowej bez określenia zasięgu tych klas. W pracy zaproponowano zastosowanie zobrazowań satelitarnych jako źródło aktualnych danych dodatkowo zasilających bazę w zasięg występowania badanego zjawiska. Klasy degradacji lasu określono na podstawie wskaźników wegetacyjnych (NDVI i NDII), któ- rych kombinacja pozwala wyznaczyć stopień i zasięg degradacji lasów w postaci obiektów powierzchniowych. Jest to niewątpliwie bardziej użyteczna forma, która czyni bazę SOZO w pełni funkcjonalną w zakresie analiz przestrzennych.
Źródło:
Acta Scientiarum Polonorum. Geodesia et Descriptio Terrarum; 2016, 15, 1-4; 5-18
1644-0668
Pojawia się w:
Acta Scientiarum Polonorum. Geodesia et Descriptio Terrarum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie danych z satelity Sentinel-2 do szacowania rozmiaru szkód spowodowanych w lasach huraganowym wiatrem w sierpniu 2017 roku
Assessment of forest damage caused by the August 2017 hurricane using Sentiel-2 satellite data
Autorzy:
Hościło, A.
Lewandowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/986595.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
lasy
huragany
szkody w lesie
drzewostany pohuraganowe
metody badan
teledetekcja satelitarna
satelita Sentinel-2
forest damage
windthrow
remote sensing
Opis:
Extreme weather events such as hurricanes, floods or fires become more and more common phenomena in Europe. In August 2017, strong wind accompanied by heavy thunderstorms caused severe damage over the large area in central and western Poland. According to rapid damage assessment prepared by the State Forests authorities a few days after the windthrow, ca 79.7 thousand hectares of forest was damaged and 9.8 million of cubic meters of wood was lost. Assessment of such a large−scale forest damage is difficult without using the remote sensed data. In this study, we examined the potential of the European satellite Sentinel−2 data for assessment of the forest damage caused by the windthrow. The assessment was performed using a difference between a normalized difference moisture index (NDMI) calculated based on the pre− and post−damage Sentinel−2 images. NDMI was calculated based on NIR (824 nm) and SWIR (1610 nm) bands. The result of this study showed the total damage area in forest is equal to 35.8 thousand hectares, of which 27.7 thousand hectares was damaged within the State Forests and 8.1 thousand hectares outside the State Forests administration. These figures are much lower than the estimates by the State Forests, regarding the forest damage within the State Forests and higher comparing to estimations in the non−state forest. In fact, these figures are comparable with the heavily damage areas assigned to clearance by the State Forests. The accurate comparison of the results was not possible due to the lack of up−to−date information on forest damage. Sentinel−2 data revealed to be perfect data for large scale damage assessment and post−damage forest monitoring mainly due to the wide swath up to 290 km. The limitation of the optical sensors is the cloudiness. Unfortunately, in the case of this analysis, the first cloud free image was acquired 6 weeks after the windthrow. It reduces the potential of the single−source data for rapid assessment of damages.
Źródło:
Sylwan; 2018, 162, 08; 619-627
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Warunki meteorologiczne powstania szkód wiatrowych w dniach 11-12 sierpnia 2017 roku w lasach środkowo-zachodniej Polski
Meteorological conditions of the occurrence of wind damage on August 11-12, 2017 in the forests of central-western Poland
Autorzy:
Chojnacka-Ożga, L.
Ożga, W.
Powiązania:
https://bibliotekanauki.pl/articles/986621.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
lasy
szkody w lesie
szkody od wiatru
warunki meteorologiczne
wiatry
Polska Srodkowo-Zachodnia
mesoscale convective system
wind gust
forest damage
Opis:
Climate change, which was particularly marked at the turn of the 20th and 21st centuries, was accompanied by unfavourable weather phenomena. One of whose effects cannot be prevented is hurricane. Much of the most devastating storms (e.g. Kyrill in January 2007, Carmen in November 2010), which crossed over Poland, was associated with low pressure systems. The occurrence of high wind speeds in the cold season is a natural feature of Polish climate. Hurricanes in the summer are generally characterized by more complicated origin. The cause of the damage at this time of year may be squall fronts and tornados (e.g. July 4th, 2002 – Puszcza Piska; July 20th, 2007 – Częstochowa region). An important issue is to develop a category of winds for the forest district, which can have destructive effect on the stands. Current research shows that gusty winds exceeding 11 m/s may cause first damage to the trees, while blows with velocity exceeding 30 m/s result in severe damage. Knowing and monitoring the mechanisms that leads to strong winds, assessing their impact, and managing risk in the context of their effects is one of the important elements of a forest management strategy. On August 11th, 2017, after the influx of hot tropic air, much cooler polar air began to flow from the west. In the afternoon and evening storm cell and supercell began to form in the south−west of the country. Later on, they moved in the north direction forming a squall line. With a Mesoscale Convective System (MCS) moving to the north, there was a gusty wind exceeding 40 m/s in some places. A gust of wind occurred around 18.30 (EET) in Dolny Śląsk (SW Poland) and after about 2 hours in Pomerania (N Poland). The pressure tendency during the transition reached 4−5 hPa. In the northern part of the country, gusts of wind were the largest and occurred several times in 2−3 hours. The system was accompanied by heavy precipitations, which in north Poland determine more than 60% of the average monthly rainfall. The effect of moving MCS was the damage of almost 80 thousand hectares of forests in Poland, which of more than 39 thousand hectares were classified to complete restoration.
Źródło:
Sylwan; 2018, 162, 03; 200-208
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mapping of windstorm damage occurring in the forest stands of Czerniejewo forest district (Polish State Forests National Holding) using aerial photographs and sentinel-2 satellite imagery
Wykorzystanie ortofotomap lotniczych oraz zobrazowań satelitarnych Sentinel-2 w procesie określania uszkodzeń drzewostanów w Nadleśnictwie Czerniejewo (RDLP Poznań) spowodowanych przez huragan
Autorzy:
Krawczyk, Wojciech
Wężyk, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/28407807.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Geodetów Polskich
Tematy:
hurricane
forest stands damage assessment
aerial orthophoto
Sentinel-2
nawałnica
określanie zasięgu uszkodzeń drzewostanów
ortofotomapa lotnicza
Opis:
On the night of 11 and 12.08.2017 a severe hurricane passed over Poland, in a belt of almost 300 km, causing damage in forest stands of area exceeding 100 000 ha. The study aimed to demonstrate the implementation of remote sensing technologies in the process of determining the extent of forest stand damages in the Czerniejewo Forest District (RDLP Poznań) caused by wind and monitoring the progress of clean-up work. In this study were used digital aerial orthophotos commissioned by the State Forests National Forest Holding (PGL LP) and Sentinel-2 (ESA) satellite images as well. The area of damaged stands was determined with the use of two approaches, i.e.: supervised classification (approach A) and thresholding of values of Normalised Difference Vegetation Index - NDVI (approach B). The obtained results were compared to reference data obtained by visual interpretation of high resolution RGB aerial orthophotos by RDLP Poznań experts. Monitoring of the progress of the clean-up works in damaged stands was carried out in 9-time intervals. The conducted image classification and spatial GIS analyses showed that the area of stands damaged by the wind was for methods A and B: 579.16 ha and 516.01 ha, respectively, with 631.00 ha as the reference. The results obtained in the study indicate errors in underestimating the area of forest stand damage based on Sentinel-2, i.e.: 51.84 ha (8.2%) in the case of method A and by 114.99 ha (18.2%) for method B. In the whole analysed time, clean-up operations were carried out on the total area of 762.33 ha of damaged forest stands, and their highest intensity was observed in the first 4 months after the storm. The work showed the applicability of free of charge Sentinel-2 (ESA) satellite imagery in the process of determining the extent of forest stand damages, pointing to the supervised classification method (Maximum Likelihood algorithm; ML) as more accurate than using the threshold of NDVI.
W nocy 11/12.08.2017 nad Polską, w pasie o długości niemal 300 km, przeszła bardzo silna nawałnica powodując zniszczenia drzewostanów na obszarze 100 000 ha. Celem prezentowanej pracy było zademonstrowanie implementacji technologii teledetekcyjnych w procesie określania zasięgu uszkodzeń drzewostanów w Nadleśnictwie Czerniejewo (RDLP Poznań) spowodowanych przez wiatr oraz monitorowania postępu prac uprzątających. W pracy wykorzystano wykonane na zlecenie PGL Lasy Państwowe cyfrowe ortofotomapy lotnicze, a także zobrazowania satelitarne z misji Sentinel-2 (ESA). Powierzchnię uszkodzonych drzewostanów określano dwoma metodami, tj.: klasyfikacji nadzorowanej - metoda A oraz progowania wartości znormalizowanego wskaźnika roślinności (NDVI) - metoda B. Otrzymane wyniki porównano do danych referencyjnych uzyskanych na drodze interpretacji wzrokowej wysokorozdzielczych ortofotomap lotniczych RGB dokonanych przez ekspertów RDLP Poznań. Monitorowania postępu prac uprzątających prowadzonych w zniszczonych drzewostanach dokonano w 9 przedziałach czasowych. Analizy przestrzenne GIS wykazały, iż powierzchnia uszkodzonych przez wiatr drzewostanów wyniosła dla metody A oraz B, odpowiednio: 579.16 ha oraz 516.01 ha, przy czym za referencję przyjęto 631.00 ha. Uzyskane w pracy wyniki wskazują na błędy niedoszacowania obszaru zniszczeń drzewostanów, tj.: 51.84 ha (8.2%) dla metody A oraz o 114.99 ha (18.2 %) dla metody B. W ciągu całego analizowanego okresu prace uprzątające wykonano na łącznej powierzchni 762.33 ha uszkodzonych drzewostanów, przy czym największą ich intensywność stwierdzono w pierwszym okresie 4 miesięcy po wystąpieniu nawałnicy. Praca wykazała przydatność nieodpłatnych zobrazowań satelitarnych Sentinel-2 (ESA) w procesie określania zasięgu uszkodzeń drzewostanów, wskazując na metodę klasyfikacji nadzorowanej (algorytm maksymalnego prawdopodobieństwa) jako dokładniejszą, niż korzystanie z wartości wskaźnika roślinnego NDVI.
Źródło:
Archiwum Fotogrametrii, Kartografii i Teledetekcji; 2020, 32; 13--35
2083-2214
2391-9477
Pojawia się w:
Archiwum Fotogrametrii, Kartografii i Teledetekcji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Współczesne teledetekcyjne metody inwentaryzacji stanu lasu po huraganie
Autorzy:
Mozgawa, J.
Powiązania:
https://bibliotekanauki.pl/articles/1023546.pdf
Data publikacji:
2004
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
szkody w lesie
metody badan
szkody huraganowe
lasy
teledetekcja satelitarna
lesnictwo
inwentaryzacja szkod
system IACS
remote sensing
aerial photography
high−resolution satellite imagery
inventory of forest damage
windstorm
iacs system
Opis:
Forest areas suffering acute damage from wind storms can be successfully monitored by applying remote sensing techniques using special panchromatic aerial photography and available traditional colour satellite imagery with a terrestrial resolution not less than 5 m. Orthophotomaps and satellite images collected for the needs of the IACS system provide important information about forest damage caused by heavy storms. It is essential to create spatial information system for the efficient collection, processing and access to spatial environment and forest−related information about areas affected by the disaster.
Źródło:
Sylwan; 2004, 148, 02; 52-60
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ wybranych czynników środowiskowych na szkody wyrządzane przez zwierzynę w lasach Lubelszczyzny
Autorzy:
Drozd, L.
Tyrawski, A.
Powiązania:
https://bibliotekanauki.pl/articles/1022054.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
zwierzeta lowne
czynniki srodowiska
jelenie
lasy
losie
lesnictwo
sarny
szkody lowieckie
wild ruminants
damage to forest caused by wildlife
Opis:
The purpose of the study was to evaluate the influence of selected environmental factors on the extent of damage caused by wild ruminants in plantations and thickets. The environmental factors were: fragmentation of forest complexes, the share of age classes in stands, the share of deciduous species, the size of felled forests and restocked area.
Źródło:
Sylwan; 2005, 149, 10; 67-72
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Contribution to knowledge of the mycobiota of Kampinos National Park (Poland): part 2
Autorzy:
Gierczyk, B.
Szczepkowski, A.
Ślusarczyk, T.
Kujawa, A.
Powiązania:
https://bibliotekanauki.pl/articles/2196349.pdf
Data publikacji:
2019-06-13
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
mycobiota
fire damage
pine forest
Ascomycota
Basidiomycota
Kampinos National Park
Polska
Opis:
Continuation of the mycological study of the fire-damaged pine forest in Kampinos National Park in central Poland in 2017 produced interesting new findings. Among the taxa collected, 36 were new to the park, six had not been hitherto reported from Poland (Calycellina araneocincta, Ciliolarina aff. laetifica, Clitocybe metachroides, Galerina cerina f. longicystis, Parasola cuniculorum, Pleonectria pinicola), and the previous status of one taxon (Pleonectria cucurbitula) had been uncertain. Short descriptions based on collected specimens have been prepared for all taxa new to Poland. The current number of taxa of macromycetes identified in Kampinos National Park has reached 1,604.
Źródło:
Acta Mycologica; 2019, 54, 1; 1116
0001-625X
2353-074X
Pojawia się w:
Acta Mycologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aktywność enzymatyczna gleb na obszarach sztucznej i naturalnej regeneracji lasu po klęsce huraganu w północno-wschodniej Polsce
Soil enzymatic activity in artificially and naturally regenerated forests after wind damage in north-eastern Poland
Autorzy:
Olszowska, G.
Powiązania:
https://bibliotekanauki.pl/articles/1294052.pdf
Data publikacji:
2016
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
tereny pohuraganowe
drzewostany sosnowe
gleby lesne
ureaza
dehydrogenazy
aktywnosc enzymatyczna
wind damage
urease
dehydrogenases
forest soils
Opis:
The aim of the study was to describe biochemical reactions in the soil based on the activity of urease and dehydrogenases in Scots pine stands damaged during and differentially managed after hurricanes. Soil enzymatic activity was investigated in 2005 and again in 2013 for selected stands in the Pisz Forest District where wind damage occurred in 2002. Most of the damaged stands were cut down and replanted, but 445 ha were left untouched for study purposes. The investigated areas differed with respect to stand damage and management. The enzymatic activity correlated well with the content of organic matter which was higher in organic than in mineral soils. In the area left to regenerate naturally, dehydrogenase and urease activity was higher in 2013 compared to 2005, which suggests the improvement of site conditions. The values of the examined biochemical parameters were correlated with the type of forest regeneration, with the forest soil regeneration being higher in artificially than in naturally regenerated stands. Changes of soil enzymatic activity were correlated with the level of stand damage and the type of management after wind damage.
Źródło:
Leśne Prace Badawcze; 2016, 77, 2
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ryzyko powstawania szkód w drzewostanach poszczególnych nadleśnictw Polski
Risk of damage to stands in individual forest districts in Poland
Autorzy:
Bruchwald, A.
Dmyterko, E.
Powiązania:
https://bibliotekanauki.pl/articles/995538.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Panstwowe Gospodarstwo Lesne Lasy Panstwowe
nadlesnictwa
uszkodzenia drzewostanow
szkody w lesie
ryzyko wystapienia
zroznicowanie regionalne
wspolczynniki reginalnego ryzyka uszkodzenia drzewostanow
stand damage risk model
stand damage risk factor
regional damage risk factor
forest district
Opis:
In the study, regional stand damage risk factors were developed for individual forest districts in Poland. For this purpose we used the materials contained in the database of the State Forests Information System (SILP), which relate to the volume of wood obtained from windfalls and deadwood in all forest districts in Poland in the years 2005−2010. The criterion proposed was the maximum annual damage during the period under review expressed as volume of wood obtained from wind−thrown and wind−broken trees, as well as deadwood per hectare of forest stands older than 40 years in a forest district. This allowed to assign regional damage risk factor values to individual units. They range from 0, corresponding to a very low damage risk to stands, to 4, indicating a very high risk. Presented map of the regional stand damage risk factors for the forest districts in Poland is the graphic result of the analysis.
Źródło:
Sylwan; 2012, 156, 01; 19-27
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stan, warunki i problemy odnowienia naturalnego sosny w Puszczy Białowieskiej
The state, conditions and problems of pine natural regeneration in the Białowieża Forest
Autorzy:
Paluch, R.
Powiązania:
https://bibliotekanauki.pl/articles/1023646.pdf
Data publikacji:
2004
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany sosnowe
Pinus
sosna
lesnictwo
odnowienia naturalne
Puszcza Bialowieska
drzewa lesne
pine
natural regeneration
białowieża forest
damage
game
fencing
Opis:
The paper discusses conditions and problems concerning natural regeneration of pine in the „Puszcza Białowieska” Promotional Forest Complex. The studies on pine regeneration established from self−seeding were carried out on permanent experimental plots occupied by fresh and fresh mixed coniferous forests site types. A space filling index used in the experiment was to define space occupied by pine regeneration the so−called „height sum”. A significance test of differences in mean values between the abundance and height sum (t−Student's test) was used for each experimental variant within the forests site types. Natural regeneration in the Białowieża Forest occurs infrequently. It can be found mainly in loose pine stands growing in fresh coniferous forest site types. Pine naturally regenerates most successfully in fresh and fresh mixed coniferous forest site types, on fenced clear−cuts with a few reserved trees, with soil prepared in furrows and well−performed tending treatments, as well as in pine stands with stocking 0.4 providing that the same conditions are maintained. The primary condition for successful natural regeneration of pine in the Białowieża Forest is its protection against animals in the form of fencing.
Źródło:
Sylwan; 2004, 148, 11; 9-21
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zagrożenie lasu przez wiatr na przykładzie nadleśnictw Puszczy Białowieskiej
Risk of wind damage to stands on the example of selected forest districts in the Bialowieza Primeval Forest
Autorzy:
Bruchwald, A.
Dmyterko, E.
Powiązania:
https://bibliotekanauki.pl/articles/1008781.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Puszcza Bialowieska
nadlesnictwa
Nadlesnictwo Browsk
Nadlesnictwo Bialowieza
Nadlesnictwo Hajnowka
lasy
zagrozenia lasu
wiatry
uszkodzenia drzewostanow
ryzyko uszkodzenia
modele ryzyka uszkodzenia
stand damage risk model
stand damage risk factor
wind
białowieża primeval forest
Opis:
Stand damage risk model was applied to three forest districts located in the Białowieża Primeval Forest: Browsk, Hajnówka and Białowieża. For this purpose, information contained in the database of the State Forests Information System was used. The obtained values of the stand damage risk factor allowed assigning each stand to one of the six risk classes. Higher class indicates higher damage risk to stands. The share of the stand area was calculated for each class. The weighted average of the areal shares of stands in the two highest damage risk factor classes was used as a measure of wind damage risk to forests. The values of this measure for individual forest districts were as follows: Browsk – 27.3%, Hajnówka – 33.0%, Białowieża – 38.3%. The degree of risk to these forests ranges from average to high, which is mainly because of large proportion of the high, old−growth spruce stands. Forest stands of the Białowieża Primeval Forest with a high risk factor are threatened by damage in the event of strong winds in this area.
Źródło:
Sylwan; 2012, 156, 10; 750-764
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kluczowe problemy współczesnego leśnictwa
Key issues in the forest sector today
Autorzy:
Płotkowski, L.
Powiązania:
https://bibliotekanauki.pl/articles/1023661.pdf
Data publikacji:
2004
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
zalesianie
gospodarka lesna
odnowienia lasu
lasy ochronne
plantacje drzew lesnych
zasoby lesne
lesnictwo
wylesienia
pine
natural regeneration
białowieża forest
damage
game
fencing
Opis:
The paper discusses conditions and problems concerning natural regeneration of pine in the „Puszcza Białowieska” Promotional Forest Complex. The studies on pine regeneration established from self−seeding were carried out on permanent experimental plots occupied by fresh and fresh mixed coniferous forests site types. A space filling index used in the experiment was to define space occupied by pine regeneration the so−called „height sum”. A significance test of differences in mean values between the abundance and height sum (t−Student's test) was used for each experimental variant within the forests site types. Natural regeneration in the Białowieża Forest occurs infrequently. It can be found mainly in loose pine stands growing in fresh coniferous forest site types. Pine naturally regenerates most successfully in fresh and fresh mixed coniferous forest site types, on fenced clear−cuts with a few reserved trees, with soil prepared in furrows and well−performed tending treatments, as well as in pine stands with stocking 0.4 providing that the same conditions are maintained. The primary condition for successful natural regeneration of pine in the Białowieża Forest is its protection against animals in the form of fencing.
Źródło:
Sylwan; 2004, 148, 11; 22-36
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
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