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Tytuł:
Analiza pozyskiwania i zrywki drewna w drzewostanach jodłowych
Analysis of logging and skidding operations in fir stands
Autorzy:
Porter, B.
Strawa, P.
Powiązania:
https://bibliotekanauki.pl/articles/1019662.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
zrywka drewna
pracochlonnosc
wydajnosc pracy
struktura dnia roboczego
lesnictwo
pozyskiwanie drewna
drzewostany jodlowe
cameraria ohridella
systemic insecticides
pest control
Opis:
Characteristics of systemic insecticdes based on organophosphate compounds (dimetoate, chlorpiryphos), carbaminians (benfuracarb, carbofuran, carbosulfan, methomyl, thiodicarb, oxamyl), phenylpyrazoles (fipronil), avermectins (abamectin) and chloronicotinyls (acetamiprid, imidacloprid, thiametoxam) are described. Also it has been pointed out the compounds and the control methods of their use against the horse−chestnut leafminer.
Źródło:
Sylwan; 2006, 150, 01; 67-72
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charakterystyka masy tuszy i poroży byków jeleni (Cervus elaphus L.) bytujących w Lasach Spalskich i Lasach Gostynińsko-Włocławskich w Polsce centralnej
Characteristics of body and antlers mass of red deer stags (Cervus elaphus L.) inhabiting Spalskie Forest and Gostyninsko-Wloclawskie Forest in Central Poland
Autorzy:
Nasiadka, P.
Kowalski, M.
Sadowski, B.
Wojtan, R.
Merta, D.
Powiązania:
https://bibliotekanauki.pl/articles/989338.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
lowiectwo
Lasy Spalskie
Lasy Gostyninsko-Wloclawskie
zwierzeta lowne
jelen europejski
Cervus elaphus
byki
masa tuszy
masa poroza
cervus elaphus
body mass
antlers
mass
central poland
Opis:
The aim of the study was to demonstrate how the trophy quality of antlers of the red deer stags living in two large forest complexes in the Mazowsze region (central Poland) differs from those inhabiting other regions of the country. The study used the data describing the body and antlers weight of 272 stags shot in 2005−2014 in two large, separated from each other, forest complexes of Spała and Gostynin. The stags from both forest complexes do not differ from each other in body weight and antler forms. The average body weight of the stags at the age of 12 is approximately 120−140 kg. The characteristics of antler forms of the stags harvested by hunters may not reflect the actual state because of the use, in practice, of the selection criteria instead of random killing. The most frequently harvested antler forms of the selection stags in the age classes of 3−5 years and 6−8 years are regular eight−pointers and irregular twelve−pointers, respectively. However, the small sample size used and the specific rules of harvesting the older stags do not allow to characterize the antler forms of the stags older than 9 years. In the autumn−winter period, a decrease in the body weight of the rutting stags at the age of over 6 years, as well as of the young, 2−5−year−old, stags is observed. The loss in body weight in young stags is approximately 20%, while in older stags – 35%. The decrease in body weight in the autumn−winter period is not stable. The largest, representing nearly 50% of the total weight loss, was recorded after the rut. In the period between November and December even a slight increase in body weight was noted followed again by a decline by the end of the winter.
Źródło:
Sylwan; 2016, 160, 09; 777-788
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Czy kriokonserwacja jest bezpieczna? Określenie potencjalnych zmian w tkankach roślinnych poddanych kriogenicznemu przechowywaniu
Cryopreservation - is it safe? Possible changes in cryostored plant genetic resources
Autorzy:
Michalak, M.
Plitta, B.P.
Kotlarski, S.
Chmielarz, P.
Powiązania:
https://bibliotekanauki.pl/articles/990857.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
ochrona zasobow genowych
tkanki roslinne
kriokonserwacja
zmiennosc fenotypowa
zmiennosc biochemiczna
zmiennosc genetyczna
cryopreservation
liquid nitrogen
epigenetics
preservation of genetic resources
Opis:
Cryopreservation (storage in liquid nitrogen, –196°C) is a technique that ensures safe, long−term conservation of plant species with recalcitrant seeds, vegetatively propagated species and biotechnology products such as somatic embryos, cell lines and genetically transformed material. The aim of cryostorage is to keep plant tissue in a safe way, which does not cause changes during storage at neither phenotypic, cytological and histological, biochemical, genetic nor epigenetic level. Therefore, before cryostorage will be applied for long−term preservation it should be thoroughly assess if it does not cause any injuries in plant material.
Źródło:
Sylwan; 2014, 158, 10; 795-800
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dokładność określania struktury dnia roboczego pracy harwestera metodą obserwacji migawkowych
Accuracy of determining the working day structure of machine timber harvesting with work sampling method
Autorzy:
Pszenny, D.
Fit, P.
Kwiatkowska, K.
Potoczny, B.
Koperek, M.
Staniszewski, P.
Moskalik, T.
Powiązania:
https://bibliotekanauki.pl/articles/882738.pdf
Data publikacji:
2018
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
Tematy:
lesnictwo
pozyskiwanie drewna
maszyny lesne
harwestery
struktura dnia roboczego
obserwacje migawkowe
Źródło:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej; 2018, 20, 2[56]
1509-1414
Pojawia się w:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gospodarka łowiecka i ostatnie carskie polowania w Puszczy Białowieskiej (1912-1913) w relacji Mitrofana Golenki
Game management and the last imperial hunts in Bialowieza Primeval Forest [1912-1913] in the report of Mitrofan Golenko
Autorzy:
Daszkiewicz, P.
Jędrzejewska, B.
Samojlik, T.
Bańka, B.
Powiązania:
https://bibliotekanauki.pl/articles/1013091.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lowiectwo
historia
gospodarka lowiecka
lesnictwo
Puszcza Bialowieska
polowania carskie
environmental history
monarchical hunts
forest fragmentation
alien species introductions
Opis:
The paper presents Polish translation of the article by Mitrofan Golenko (originally published in 1935) reporting the last imperial hunts that Russian tsar and his family held in Białowieża Primeval Forest in 1912−1913. The article gives information on the hunting techniques and organisation of monarchical hunts in the early 20th century.
Źródło:
Sylwan; 2008, 152, 12; 47-59
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Jakość drewna topól wprowadzonych w ramach rekultywacji leśnej na zwałowisko skał towarzyszących wydobyciu węgla brunatnego
Quality of wood of poplars used in the reclamation of spoil rock dump accompanying the lignite mining
Autorzy:
Pająk, M.
Michalec, K.
Wąsik, R.
Urban, O.
Vitek, P.
Wos, B.
Krzaklewski, W.
Pietrzykowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/979559.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
tereny przemyslowe
kopalnie wegla brunatnego
zwalowiska zewnetrzne
rekultywacja lesna
topola
drewno topolowe
jakosc drewna
wady drewna
cultivar
timber
wood defects
knots
curvature
Opis:
The aim of the study was to determine quality of wood of 40−year old poplar cultivars introduced onto the external spoil dump of the Bełchatów Field and subjected to various reclamation systems. The research was carried out on the 1/78 trial plot located on the northern slope of the external spoil dump of the Bełchatów Field (central Poland). The dump was the result of the rock (predominantly sand) overlay storage accompanying lignite deposit. On the trial plot two blocks were established: one called ‘Humus’ where sandy sediments were covered with approximately 20−centimeter layer of fertile soil, and the other named ‘Piasek’ (sand) with only sandy sediments. To set up the experiment 9 poplar varieties were used (I−214, Robusta, Gerlica, H−194, Grandis, Oxford, Androscoggin, Geneva, H−275). Their wood quality was assessed in 2017, 40 years after their introduction on the spoil dump. The results indicate that poplars growing in the ‘Humus’ variant were characterised by higher volume in comparison to wood of poplars from the ‘Piasek’ variant. The latter however had a larger share of better wood quality classes (WB, WC). The results also showed that wood classification of all investigated varieties were significantly influenced by curvature in the case of the ‘Humus’ variant and knots in the ‘Piasek’ one. The influence of other wood defects such as galls, grain slope, multiple pith and knobs was insignificant. In order to obtain the higher volume of poplar raw material the reclamation treatments should be carried out on afforested areas with fertile outer layer whereas the better quality raw material can be obtained on less fertile sediments.
Źródło:
Sylwan; 2019, 163, 10; 855-861
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Liczebność i rozmieszczenie głuszca w Polsce w XXI wieku
Population size and distribution of the capercaillie in Poland in the 21st century
Autorzy:
Zawadzka, D.
Żurek, Z.
Armatys, P.
Stachyra, P.
Szewczyk, P.
Korga, M.
Merta, D.
Kobielski, J.
Kmieć, M.
Pregler, B.
Krzan, P.
Rzońca, Z.
Zawadzki, G.
Zawadzki, J.
Sołtys, B.
Bielański, J.
Czaja, J.
Flis-Martyniuk, E.
Wediuk, A.
Rutkowski, R.
Krzywiński, A.
Powiązania:
https://bibliotekanauki.pl/articles/980118.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
lowiectwo
ptaki lowne
gatunki chronione
gluszec
Tetrao urogallus
wystepowanie
liczebnosc populacji
rozmieszczenie przestrzenne
Polska
wiek XXI
tetrao urogallus
species distribution
species abundance
refuges
poland
Opis:
The data on the distribution and number of the capercaillie Tetrao urogallus in Poland for the period from the end of the 20th century up to 2017−2018 is presented. The capercaillie is a sedentary forest grouse living in old mountain forests and within the boreal zone. Since more than a century, the decrease in the numbers of the species has been observed, interlinked with the extinction of isolated populations. Within the present borders of Poland, a 1925 questionnaire study noted 2200−2700 individuals. In the 1960s, the national population was estimated at 1700−2000 birds, living in five isolated populations. In 1985−1995, the population numbers of the capercaillie dropped to approx. 466−700 individuals in four regions, and in 2000 it was estimated at 470−570 birds. According to the results of the censuses performed in 2017−2018, the size of the capercaillie population risen to 523−631 individuals and 59−69 lekking grounds. Currently the capercaillie occurs in four isolated regions. These are the Western Carpathians (the Beskid Sądecki, Tatry, Gorce, Babia Góra, Beskid Żywiecki, and the Beskid Śląski ranges) where 284−326 individuals live and 35−41 leks are active. In the Solska and the Lasy Janowskie Forests (Lublin region), the population was estimated at 132−184 individuals and 12−13 lekking grounds. In the Augu− stów Forest (Podlasie region) 36−46 individuals and 5−7 leks were found. In the Bory Dolnośląskie Forest, where native capercaillies got extinct during the last decade, the reintroduction program resulted in the rebuilding of their 65−75 population (with 6−7 leks). The restitution of the species in the Piska Forest has begun. During the last 20 years, populations in the Carpathian national parks have been stable, although fluctuating in numbers. The increase in the number of individuals in the Augustów Forest as well as in the Sądecki and Beskid Śląski Mountains is an after−effect of the release of birds from breeding centers or translocations. In other strongholds, fluctuations or decreases have been recorded, including wisible in the Beskid Żywiecki Mountains.
Źródło:
Sylwan; 2019, 163, 09; 773-783
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena możliwości włączenia Lasów Sobiborskich do sieci obszarów Important Birds Areas oraz obszarów specjalnej ochrony ptaków
Possibility of inclusion of the Sobibór Forests into Importand Birds Areas and Special Protection Areas networks
Autorzy:
Kanclerska, K.
Karpińska, O.
Woźniak, B.
Grzębkowski, M.
Aftyka, S.
Belcik, M.
Bożycki, L.
Celej, M.
Chodkiewicz, T.
Kuszner, M.
Litwiniak, K.
Pawelec, M.
Pietrasz, K.
Rożycki, A.L.
Sikora, D.
Smith, L.
Stasiak, K.
Szewczuk, W.
Sliwiński, S.
Tylkowski, S.
Woźniak, M.
Woźniak, P.
Wójciak, J.
Żołądek, K.
Keller, M.
Powiązania:
https://bibliotekanauki.pl/articles/985820.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
ochrona przyrody
Lasy Sobiborskie
walory przyrodnicze
fauna
ptaki
ochrona zwierzat
Europejska Siec Ekologiczna Natura 2000
obszary specjalnej ochrony ptakow
bird protection areas
nature 2000 network
Opis:
One of the greatest challenges of nature conservation is to identify and locate networks of protected areas, which will preserve the biodiversity. The paper aims to show the ornithological value of the Sobibór Forests (E Poland) and to emphasize the fact that the network of Important Bird Areas (IBA) and Special Protection Areas within Natura 2000 (SPA) may require additions. The study was conducted in the period of 2008−2016, mainly on forested areas occupying 256 km2. The Sobibór Forests are characterized by a large diversity of habitats, but are mainly covered by Scots pine Pinus sylvestris. High diversity of wetlands and marshlands make the Sobibór Forest unique within the country. Three methodologies were used to estimate population size of chosen species: sampling, census and random observations. 31 species from Annex I of the Birds Directive plus 25 species of SPEC or non−SPECE category were observed which allows to consider this area as one of the most valuable for avifauna in Poland. Six breeding species classify the Sobibór Forests as the IBA and SPA. These species include Black Stork Ciconia nigra (8−13 breeding pairs), Common Crane Grus grus (80−120 breeding pairs), Grey Great Owl Strix nebulosa (0−7 breeding pairs i.e. 50−100% of Polish breeding population), Eagle Owl Bubo bubo (6 breeding pairs), White−backed Woodpecker Dendrocopos leucotos (40−70 breeding pairs) and Grey−headed Woodpecker Picus canus (20−40 breeding pairs). Six other species show potential for qualification, but not enough data has been collected yet. The list of this specie includes: Short−toed Snake Eagle Circaetus gallicus, Common Snipe Gallinago gallinago, Stock Dove Columba oenas, European Nightjar Caprimulgus europaeus, Collared Flycatcher Ficedula albicollis and Bluethroat Luscinia svecica. The Sobibór Forests occupy a small area compared to other IBA forests. However, the number of breeding species classifies the surveyed area as 7th among other IBAs. Moreover all eligible species may be considered as a bioindicators of the natural state of the forest. This is proof of the high natural value of this area.
Źródło:
Sylwan; 2018, 162, 02; 146-154
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oddziaływanie gradacji brudnicy mniszki (Lymantria monacha L.) na przyrosty promieniowe sosny zwyczajnej (Pinus sylvestris L.) w Puszczy Noteckiej
Impact of black arches (Lymantria monacha L.) outbreak on radial increment of Scots pine (Pinus sylvestris L.) in the Puszcza Notecka forest
Autorzy:
Okonski, B.
Miler, A.T.
Czerniak, A.
Grajewski, S.
Duszynski, P.
Powiązania:
https://bibliotekanauki.pl/articles/881173.pdf
Data publikacji:
2014
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
Tematy:
lesnictwo
szkodniki roslin
brudnica mniszka
Lymantria monacha
gradacja
oddzialywanie na rosliny
sosna zwyczajna
Pinus sylvestris
przyrosty radialne
Źródło:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej; 2014, 16, 2B[39]
1509-1414
Pojawia się w:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pionowe zróżnicowanie bogactwa i składu gatunkowego myko-, licheno- i briobioty drzew powiatrołomowych w Kampinoskim Parku Narodowym
Vertical differentiation of the richness and species composition of the myco-, licheno- and briobiota of windthrown trees in Kampinos National Park
Autorzy:
Zaniewski, P.T.
Szczepkowski, A.
Gierczyk, B.
Kujawa, A.
Ślusarczyk, T.
Fojcik, B.
Powiązania:
https://bibliotekanauki.pl/articles/985753.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
parki narodowe
Kampinoski Park Narodowy
drzewa lesne
wiatrolomy
dab bezszypulkowy
Quercus petraea
Quercus x rosacea
brzoza brodawkowata
Betula pendula
sosna zwyczajna
Pinus sylvestris
epifity
epiksylity
grzyby makroskopijne
grzyby mikroskopijne
porosty
grzyby naporostowe
mszaki
bogactwo gatunkowe
sklad gatunkowy
zroznicowanie pionowe
biodiversity
quercus petraea
q. × rosacea
betula pendula
pinus sylvestris
rarefaction curve
Opis:
Vertical distribution of species richness of various groups of organisms within trees is still insufficiently understood. The reason for this are, among others, the difficulties in accessing standing trees. The aim of the study was to determine the differentiation of species richness of fungi, lichens and lichenicolous fungi and bryophyte of three tree species (oak, birch and pine) within windthrow areas in the Kampinos National Park (central Poland). Ten individuals of each tree species were chosen. They were only thrown, not broken, without serious damage, still alive and easily accessible. The investigations of species composition were performed in five parts of each tree: trunk bottom, lower trunk, upper trunk, lower crown and upper crown. Individual parts of the trees were measured, than their surface and volume were determined. The species richness of the studied groups of organisms was calculated using rarefaction curves based on the number of samples, volume and area of the distinguished tree parts. Species composition changes of the tree parts were described using non−metric multidimensional scaling. The most important parts of trees for fungi were the crowns of trees, in particular oak’s. The highest richness of lichens was found within the crown of oaks, however they were recorded within all of the distinguished tree parts. The highest richness of bryophytes was recorded in the lower crown of oak and the trunk base of birch, but this group of organisms generally did not inhabit the birch and pine crowns. In the case of rarefaction curves based on the number of samples, the large positive meaning of the oak was observed, however the observed pattern was different when the volume and surface were taken into account. The general species richness of the studied taxa was similar for three tree species, the pine was distinguished positively in case of fungi, birch – in the case of lichens and oak – in the case of bryophytes. The species of trees differ from each other in terms of the species composition of the studied groups of organisms. We also observed the gradual change in the species composition from the base of the trunk to the upper crown.
Źródło:
Sylwan; 2019, 163, 12; 980-988
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pomiary wymiany dwutlenku wegla oraz biomasy w ekosystemach lesnych - Stacja Pomiarowa w Tucznie
Measurement of carbon dioxide exchange and biomass in forest ecosystems - measuring station in Tuczno
Autorzy:
Chojnicki, B H
Urbaniak, M.
Danielewska, A.
Strzelinski, P.
Olejnik, J.
Powiązania:
https://bibliotekanauki.pl/articles/882154.pdf
Data publikacji:
2009
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
Tematy:
lesnictwo
ekosystemy lesne
obieg wegla
dwutlenek wegla
strumienie dwutlenku wegla
biomasa
pomiary
metoda kowariancji wirow
Stacja Pomiarowa Tuczno
Opis:
Badania ekosystemów leśnych są niezbędne do oceny ich wpływu na globalny bilans CO2. Prowadzone są już w wielu krajach europejskich takich, jak Niemcy, Finlandia czy Czechy. Również w Polsce uruchamiana jest pierwsza stacja pomiarowa, na której prowadzone są pomiary wymiany gazów i ciepła między atmosferą i lasem oraz pomiary biomasy. Ulokowana jest ona na terenie nadleśnictwa Tuczno. Do oceny wielkości strumienia netto dwutlenku węgla ekosystemów leśnych stosowana jest powszechnie metoda kowariancji wirów. Wymaga ona zastosowania skomplikowanych i wyrafinowanych urządzeń pomiarowych. Pomiar wielkości biomasy nadziemnej, a tym samym ilości ulokowanego w lesie CO2 może być uzupełnieniem wyników uzyskanych dzięki zastosowaniu metody kowariancji wirów. Oszacowanie biomasy leśnej może być wykonywane zarówno metodami tradycyjnymi, jak i przy pomocy nowoczesnych technik teledetekcyjnych. Badania te wykonywane są m.in. przy pomocy nowatorskiej techniki naziemnego skaningu laserowego, uzupełnionej laserowym skaningiem lotniczym, wysokorozdzielczą cyfrową ortofotomapą i zdjęciami hemisferycznymi.
Studies of forest ecosystems are essential to assess their impact on the global balance of CO2. They are already held in many European countries such as Germany, Finland and Czech Republic. Also in Poland, the first measuring station started, where they carry out measurements of gas and heat exchange between the atmosphere and the forest and biomass measurements. It is located in Tuczno Forest District. To assess the magnitude of net carbon flux of forest ecosystems the eddy covariance method is commonly used. It requires quite complicated and sophisticated measuring equipment. Measurement of aboveground biomass, and thus the quantity of CO2 deposited under the forest can be complementary to the results obtained by the eddy covariance method. Estimation of forest biomass may be carried out both traditional and modern techniques using remote sensing. These tests are carried out, inter alia, using innovative techniques of terrestrial laser scanning, supplemented by airborne laser scanning, high resolution digital photos and orthophotomap and hemispherical photos.
Źródło:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej; 2009, 11, 2[21]; 247-256
1509-1414
Pojawia się w:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Proba oceny uszkodzen drzew w wyniku prac zrywkowych w sosnowych drzewostanach przedrebnych
Autorzy:
Paschalis, P.
Porter, B.
Powiązania:
https://bibliotekanauki.pl/articles/815324.pdf
Data publikacji:
1994
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany sosnowe
uszkodzenia drzew
szkody w lesie
zrywka drewna
lesnictwo
drzewostany przedrebne
pozyskiwanie drewna
Źródło:
Sylwan; 1994, 138, 09; 17-21
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Próba oceny wpływu szerokości szlaków turystycznych na otaczające je środowisko lasu
An attempt to assess the effect of tourist trail width on adjacent forest environment
Autorzy:
Skłodowski, J.
Bartosz, S.
Dul, L.
Grzybek, D.
Jankowski, S.
Kajetanem, M.
Kalisz, P.
Korenkiewicz, U.
Mazur, G.
Myszek, J.
Ostasiewicz, M.
Primka, B.
Puczyłowska, I.
Radzikowski, M.
Roeding, P.
Serek, B.
Powiązania:
https://bibliotekanauki.pl/articles/1009663.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
turystyka
zwiezlosc gleb
wskazniki ekologiczne
oddzialywanie na srodowisko
wysokosc
runo lesne
lasy
erozja gleb
lesnictwo
szlaki turystyczne
tourist trails
environmental changes
soil compaction
erosion
height of herbaceous vegetation
plant life forms
indicator figures
Opis:
The impact of narrow (up to 2 m), medium (up to 3.5 m) and wide (>3.5 m) tourist trails on the surrounding environment was investigated. On wide trails, the value of soil erosion and compaction indices was found to be the highest, while the herb height index was the lowest indicating the greatest impact of wide trails on the environment. The phytosociological relevés were used to determine ecological indicator figures. Wide trails were characterized by higher thermal and continentalism indices and lower pH and trophic indices. The proportion of therophytes and geophytes was higher, while of hemicryptophytes, phanerophytes and chamaephytes on wide trails were lower than on medium and narrow trails. All the analysed indices pointed to a stronger impact of wide trails on the environment in comparison with medium and narrow trails.
Źródło:
Sylwan; 2009, 153, 10; 699-709
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Problem masowego zamierania drzewostanów świerkowych w Leśnym Kompleksie Promocyjnym "Puszcza Białowieska"
Problem of a massive dying-off of Norway spruce stands in the 'Bialowieza Forest' Forest Promotional Complex
Autorzy:
Brzeziecki, B.
Hilszczański, J.
Kowalski, T.
Łakomy, P.
Małek, S.
Miścicki, S.
Modrzyński, J.
Sowa, J.
Starzyk, J.
Powiązania:
https://bibliotekanauki.pl/articles/985913.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
lesne kompleksy promocyjne
Lesny Kompleks Promocyjny Puszcza Bialowieska
drzewostany swierkowe
stan sanitarny
zagrozenia drzewostanow
szkodniki roslin
kornik drukarz
Ips typographus
dynamika populacji
gradacja
drewno martwe
grzyby patogeniczne
zagrozenie pozarowe
zamieranie lasow
norway spruce bark beetle infestation
białowieża forest
ecosystem stability
multifunctional forestry
natura 2000 plc200004
natural values
world heritage site
Opis:
The Białowieża Forest (BF) is in many respects an exceptional object, of a great importance for nature protection and forest management, at the international scale. The BF plays also a key role from the point of view of regional development and welfare of local community. In the last period, a big threat for multiple values of the BF has arisen, as a result of enormous bark beetle infestation, which started in 2012 and has killed 1.4 million m3 of spruce trees. In the paper, first, a brief overview of the general history of the BF and an account of long−term human impacts on its functioning and structure is provided. Next, the history of bark beetle infestations in the BF is analysed. It is shown that, in the period 1992−2007, the average volume of spruces killed by bark beetle amounted on average to 20,000 m3 of wood annually. During that period practically all dead trees were removed from the forest by means of salvation cuttings. Starting from 2008, more and more trees infested by European spruce bark beetle were left in the forest, in a result of a pressure exerted by environmental groups. In 2012, Minister of Environment decided to reduce the allowable cut, determined in forest management plans elaborated for the managed part of the BF, from 107,000 to 48,500 m3/year. This decision, along with several other regulations and restrictions, made in practice impossible to stop the development of a current bark beetle infestation, which started in 2011 and intensified during the next 6 years (solely in 2016 bark beetles killed 480,000 m3 of spruce trees). In the paper, the most important implications and consequences of the current situation are briefly summarized and discussed. A special attention is given to the problems concerning: 1) protection of Natura 2000 species and sites (endangered by bark beetle outbreak), 2) a negative influence of large amounts of spruce deadwood on forest soils, 3) threats caused by pathogenic fungi, 4) question of public safety, 5) fire hazard, and 6) economical dimension. The legal and socio−economical foundations of the functioning of Hajnówka, Browsk and Białowieża forest districts comprising the managed part of the BF, as well as their most important environmental and social consequences are discussed too. Among others, it is indicated that, under current conditions of the BF, human intervention plays a key role in maintaining stable and compositionally diverse woodland communities. Finally, several suggestions and recommendations are provided, aimed at, in the short term, breaking off the current bark beetle outbreak, and, in the long term, at maintaining a multifunctional character of the BF and its ability to provide all important ecosystem services on a sustainable basis.
Źródło:
Sylwan; 2018, 162, 05; 373-386
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł

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