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    Tytuł:
    Zastosowanie cyfrowej stacji fotogrametrycznej VSD w leśnictwie do inwentaryzacji drzewostanów
    The use of digital photogrammetric station (VSD) in forest stands inventory
    Autorzy:
    Będkowski, K.
    Miścicki, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/129753.pdf
    Data publikacji:
    2003
    Wydawca:
    Stowarzyszenie Geodetów Polskich
    Tematy:
    fotogrametria cyfrowa
    VSD
    leśnictwo
    inwentaryzacja drzewostanów
    digital photogrammetry
    forestry
    inventory of forest stands
    Opis:
    Przedstawiono wyniki badań nad zastosowaniem pomiarów fotogrametrycznych, wykonywanych za pomocą stacji cyfrowej VSD, do inwentaryzacji drzewostanów. Badania prowadzono na 220 kołowych powierzchniach próbnych w drzewostanach Uroczyska Głuchów Leśnego Zakładu Doświadczalnego w Rogowie. Stwierdzono dużą przydatność stacji VSD do pomiaru cech taksacyjnych drzewostanów.
    Research results concerning application of the photogrammetric survey, realized by means of the digital station (VSD), for forest inventory was presented. The research work included 220 circular research areas in forest stands of the Głuchów forest district. The high level of usefulness of the VSD station for the survey of stands characteristics was ascertained.
    Źródło:
    Archiwum Fotogrametrii, Kartografii i Teledetekcji; 2003, 13b; 301-305
    2083-2214
    2391-9477
    Pojawia się w:
    Archiwum Fotogrametrii, Kartografii i Teledetekcji
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Integracja technologii geoinformatycznych w analizie uszkodzeń lasu spowodowanych przez huragan w Puszczy Piskiej
    Integration of geoinformation technologies in an analysis of hurricane damage to the Pisz Primeval Forest
    Autorzy:
    Wężyk, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/130290.pdf
    Data publikacji:
    2006
    Wydawca:
    Stowarzyszenie Geodetów Polskich
    Tematy:
    zdjęcia lotnicze CIR
    fotointerpretacja uszkodzeń drzewostanów
    GPS
    GIS
    aerial photos
    photointerpretation of damaged forest stands
    Opis:
    W dniu 4 lipca 2002 roku, w północno-wschodniej Polsce huragan zniszczył 330 km² drzewostanów, w tym kompletnie 17 000 ha (straty 3.6 mln m³ drewna). Na zniszczonym fragmencie obszaru w Puszczy Piskiej utworzono Las Ochronny „SZAST” (445 ha). Nalot fotogrametryczny wykonano dnia 14.11.2002 r. z zastosowaniem zdjęć spektrostrefowych w skali 1:15 000. Użycie technologii geoinformatycznych w projekcie polegało na jednoczesnym wykorzystywaniu: odbiorników GPS, cyfrowej stacji fotogrametrycznej, oprogramowania do przetwarzania obrazów oraz narzędzi GIS. Te ostatnie integrowały wyniki pomiarów fotogrametrycznych z bazami danych geometrycznych i atrybutowych. W terenie stworzono klucz interpretacyjny obejmujący 8 klas uszkodzeń drzewostanów. Digitalizacja 10 modeli pozwoliła na wydzielenie 1 576 poligonów na obszarze 1965.60 ha, które na drodze analiz przestrzennych porównano z 726 poligonami pododdziałów z Leśnej Mapy Numerycznej. Analizowano warstwę wynikową 4 973 poligonów o atrybutach przejętych ze stereodigitalizacji oraz z bazy danych SILP\LAS. Największe nasilenie szkód (klasa 4.2) zanotowano na obszarze 533.6 ha poza lasem ochronnym „SZAST” (las administrowany przez PG LP). Na obszarze „SZAST” znalazło się 87.51 ha drzewostanów w tej klasie uszkodzeń, przy czym największe powierzchnie zajęła klasa 4.1 (125.81 ha). NMT obszaru pozwolił na wygenerowanie ortofotografii cyfrowych, które po mozaikowaniu i wyrównaniu tonalnym skompresowano (algorytm ECW) do wielkości 123 MB. Przeprowadzone badania potwierdziły konieczność stosowania technologii geoinformatycznych zapewniających: szybkie pozyskanie, przetworzenie i generowanie obiektywnych i weryfikowalnych geodanych. Wspierają one procesy podejmowania decyzji na obszarach klęsk żywiołowych.
    July 4th 2002 saw the biggest storm disaster in Polish State Forest (PG LP) history, located in northeastern Poland. It caused huge losses in forest areas in the Puszcza Piska Primeval Forest, across an area of 330 km² (130 km long and several km wide). The area of completely destroyed forest area was about 170 km2. An initial estimation of the stand volume damage was ca. 3.6 mln m³. The PG LP administration immediately decided to make a forest inventory supported by CIR aerial images (Kodak Aerochrom Infrared 1443; scale 1:15 000, date: Nov. 14, 2002). At the same time, for scientific purposes, a decision was made to establish an observation area (“SZAST”) of the natural forest regeneration process in the totally destroyed parts of the forests. The precision inventory of the “SZAST” area and surrounding buffer zone was based on geoinformation technologies. The CIR aerial images were elaborated on the “DEPHOS” digital photogrammetric station. The GCP points for the aerotriangulation process were collected using DGPS receivers. Following the standards of the IBL (specially prepared by Dr. Glaz) classification, the 3D digitizing was done covering four main Levels 0-4 with 6 sub-levels (detailed description). 1 576 polygons collected, covering an area of 1 965.60 ha. The training areas for the photointerpretation team were collected using DGPS and GIS based on the Digital Forest Map (with a SILP/LAS description database). The digital orthophotomap mosaic (color balanced 3.15 GB GeoTIFF) was generated based on the CIR aerial photos and the DSM (Digital Surface Model). After the wavelet compression (ratio 1:26) to ECW format (123.05 MB) the CIR-orthophotomap can be used, not only in Desktop- or Mobile-GIS, but also in every office (like MS Word, Power Point) application. The study confirmed the necessity of using of GI-T for: quick retrieval, processing and generating objective geodata which can be verified and support decision processes in areas of natural disasters.
    Źródło:
    Archiwum Fotogrametrii, Kartografii i Teledetekcji; 2006, 16; 547-556
    2083-2214
    2391-9477
    Pojawia się w:
    Archiwum Fotogrametrii, Kartografii i Teledetekcji
    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:
    Wpływ wad drewna wielkowymiarowego na przychody z jego sprzedaży
    Effect of defects on income from the sales of large dimension timber
    Autorzy:
    Szramka, H.
    Bieniaszewski, T.
    Auguścik, L.
    Bobek, J.
    Adamowicz, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/987045.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    ekonomika lesnictwa
    surowce drzewne
    obnizenie jakosci
    drewno wielkowymiarowe
    wady drewna
    drewno
    sprzedaz
    przychody
    Nadlesnictwo Zaporowo
    forest stands
    health
    timber
    wood defects
    forest economics
    Opis:
    Harvested timber has many various wood defects. Analyses were carried out on material collected in Zaporowo Forest District (northern Poland). Results show that various defects were found in 35% of harvested timber on average. The share of timber with defects varied among individual species (pine – 44%, spruce – 22%, oak – 14%, birch – 9%, beech – 5%, lime and larch – 2% each, hornbeam and alder – 1% each). The individual wood defects appeared in harvested timber with following frequency: knots – 55%, knobs – 22%, foreign bodies – 7%, curvature – 5%, inner rot – 5%, galls – 2%, blue stain – 1%, insect holes – 1%, false heartwood – 1%, and cracks – 1%. Timber defects resulted in reduction of income from the sales. A decrease in income caused by various defects amounted from 0.07 PLN/m3 for brown sap stain to 68.83 PLN/m3 for knots. The greatest effect of wood defects on the reduction of income from sales was recorded for oak timber (518.30 PLN/m3), while the smallest for aspen (4.63 PLN/m3). Due to the fact that in almost all analysed tree species the dominant effect on the reduction of income from timber sales was caused by knots (open knots and knobs) systematic solutions need to be found in order to reduce the effect of this defect. It is particularly important in the case of oak timber, where a decrease in income from timber sales connected with this defect was the greatest.
    Źródło:
    Sylwan; 2017, 161, 03; 238-246
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Poziom chlorofilu a i b w liściach krzewów podszytowych w grabowo-dębowych lasach lasostepu Ukrainy Zachodniej
    The content of chlorophyll a and chlorophyll b in leaves of undergrowth species in hornbeam-oak forest stands of the forest-steppe zone in Western Ukraine
    Autorzy:
    Zaika, V.
    Bondarenko, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1292298.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    drzewostany grabowo-debowe
    podszyt
    krzewy
    liscie
    chlorofil a
    chlorofil b
    poziom chlorofilu
    lasostep
    Ukraina Zachodnia
    shrubs
    plastid pigments
    chlorophyll a
    chlorophyll b
    hornbeam-oak forest stands
    forest-steppe zone of western
    Ukraine
    Opis:
    In this study, the biosynthesis of the plastid pigments chlorophyll a and b was examined for the most common shrubs in hornbeam-oak forest stands of the Western forest-steppe zone of Ukraine. The characteristics of the pigments’ biosynthesis were determined in terms of plant species, vegetation period and growth conditions (under canopy cover and out in the open). The gathered data on the changes of the pigment complex with respect to the examined variables confirms the sensitivity of plastid pigment biosynthesis to environmental factors.
    Źródło:
    Leśne Prace Badawcze; 2018, 79, 1
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cechy diagnostyczne jesionu wyniosłego (Fraxinus excelsior L.) z falistością włókien rosnącego na Ukrainie
    Diagnostic features of Fraxinus excelsior L. with wavy-grained wood growing in Ukraine
    Autorzy:
    Sopushynskyy, I.
    Teischinger, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1318417.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    Ukraina
    drzewa lesne
    jesion wyniosly
    Fraxinus excelsior
    cechy biometryczne
    cechy morfologiczne
    budowa drewna
    gestosc drewna
    drewno jesionowe
    drewno falistowlokniste
    analiza dendrochronologiczna
    struktura drewna
    makrostruktura
    common ash
    wavy-grained wood
    biometry
    decorative wood
    anomaly wood
    forest stands
    Opis:
    The paper presents analysis of biometric features of ash with wavy-grained wood, which has decorative appeal. The research results shows that fresh broadleaves ash forest stands growing in the Vinnytsya and Sokyryany Regions of Ukraine have high potential for growing curly ash. The differences between straight-grained and wavygrained wood density and macrostructure were analysed and estimated. Statistical evaluation of the aesthetic macrostructure of wood characteristics indicated that the length of wave varied from 3.25 to 10.83 mm and its amplitude varied from 0.37 to 1.74 mm. The average width and mean height of anomalies in wood formation were equal to 15.89 mm and 5.00 mm, and their mean occurrence was 30 times m-2. Average annual growth ring width of wavy-grained ash wood was clearly greater (by 25 %) than that of straight-grained wood. The density of wavygrained wood was 82 kg·m-3 higher than straight-grained wood after oven-drying and 70 kg·m-3 higher prior to ovendrying.
    Źródło:
    Leśne Prace Badawcze; 2013, 74, 3; 189-195
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Trends in forest fuel accumulation in pine forests of Kyiv Polissya in Ukraine
    Autorzy:
    Harzhii, Roman V.
    Yavorovskyi, Petro P.
    Sydorenko, Serhii Н.
    Levchenko, Valery B.
    Tyshchenko, Olexandr M.
    Tertyshnyi, Anatolii P.
    Yakubenko, Borys Ye.
    Powiązania:
    https://bibliotekanauki.pl/articles/2041249.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    Pinus sylvestris L.
    pine stands
    forest fires
    litter
    forest fuel
    Opis:
    At present, forest fire research is becoming especially relevant in Ukraine. This study examines patterns of forest fuel accumulation in pine (Pinus sylvestris L.) stands that grow in different soil conditions with different pine stand structure. To estimate the load of forest fuel of different fractions, a combined methodology was used: the weighing method and the FIREMON (fuel load estimation) method. It was found that increase in surface forest fuel loads is not directly proportional to forest stands’ age. Fractional size distribution, capacity and loads of forest fuel depend on several factors, among which the greatest role is played by forestry characteristics of the pine stand. It was determined that in the forest site conditions of type C (fairly rich soils) in Kyiv Polissya, the share of forest litter compared to pine stands that grow in poor soil conditions (A) is smaller, ranging from 41% to 76% of the total forest fuel load. The mass proportion of the duff layer varies from 15% in young forest stands to 43% in mature stands. It was established that changes in forest fuel fractions for 1, 10, 100 and 1000 hours varied insignificantly with age rate. The share of substratum woody debris of 10 and 100 hours was insignificant and depended more on the forestry treatment regime on these sites. The mass proportion of coarse woody debris (1000 hours) was also insignificant, varying from 0% to 5.9% of the total load of surface fuel.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2021, 63, 2; 116-124
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Current state and productivity of age-old experimental plantations of prof. V.D. Ogievsky in the northeastern part of Ukraine
    Autorzy:
    Zhezhkun, M.
    Demianenko, L.V.
    Powiązania:
    https://bibliotekanauki.pl/articles/2040994.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    Scots pine
    natural stands
    forest plantations
    productivity
    health condition
    Opis:
    This research is aimed at determining the health condition and productivity of Scots pine (Pinus sylvestris L.) stands created during 1906–1908 on the initiative of Prof. V. D. Ogievsky. The scheme of silvicultural experiments included: determining the influence of different widths and directions of clear felling on the natural regeneration, testing of pine plantations of pure and mixed composition and the choice of methods for their creation. In terms of health condition, 103–105-year-old artificial pine stands are weakened and their health condition is slightly worse compared to the aged pines of natural origin. The productivity of age-old linden-pine plantations is higher than of pure pine plantations, and the stock of stem wood in plantations created by seed sowing and marketability is higher compared to the plantations created by planting seedlings.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2021, 63, 3; 195-202
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Naturalne i sztuczne zagrożenia lasów w Nadleśnictwie Ujsoły
    Natural and artificial threats of forests in the Ujsoły Forest District
    Autorzy:
    Bednarz, Dominika
    Powiązania:
    https://bibliotekanauki.pl/articles/29433626.pdf
    Data publikacji:
    2022
    Wydawca:
    Uniwersytet Komisji Edukacji Narodowej w Krakowie
    Tematy:
    drzewostany
    gospodarka leśna
    las
    Nadleśnictwo Ujsoły
    zagrożenia leśne
    stands
    forest management
    forest
    Ujsoły Forest District
    forest threats
    Opis:
    Praca zawiera przegląd czynników wpływających na obumieranie drzewostanów w Nadleśnictwie Ujsoły oraz przedstawia sposoby walki z tymi czynnikami, podejmowane przez Nadleśnictwo. Wykazano, że istnieją zagrożenia naturalne i sztuczne, które negatywnie wpływają na stan zdrowotny lasów w Nadleśnictwie Ujsoły. Do ich oceny wykorzystano dostępne materiały z tego Nadleśnictwa, wyniki wywiadu z jego pracownikami oraz informacje ankietowe uzyskane od miejscowej ludności, a także własne terenowe obserwacje. Z przeprowadzonych badań wynika, że najbardziej negatywny wpływ na stan zdrowotny lasów Nadleśnictwa Ujsoły mają owady, głównie kornik drukarz. Szkodnikami są grzyby, zwierzęta, a także niektóre czynniki klimatyczne. Ich unieszkodliwienie jest trudne, ale może je osłabić prawidłowo prowadzona gospodarki leśna zarówno przez nadleśnictwo, jak i prywatnych właścicieli lasów.
    This article includes an overview of factors affecting the decay of forest in the Ujsoły Forest District and presents ways to combat these factors, carried out by the Forest District. It was shown that there are natural and artificial hazards that have a negative impact on the health condition of forests in the Ujsoły Forest District. Their evaluation was based on the materials made available by the Forest Inspectorate, the results of the interview with its employees and survey information obtained from the local population, as well as own field observations. The research shows that the most negative impact on the health condition of forests in the Ujsoły Forest District are insects, mainly spruce bark beetle. Pests are fungi, animals, as well as some climatic factors. Their disposal is difficult, but it can be weakened by properly managed forest management by both the forest inspectorate and private forest owners.
    Źródło:
    Annales Universitatis Paedagogicae Cracoviensis Studia Geographica; 2021, 17; 44-63
    2084-5456
    Pojawia się w:
    Annales Universitatis Paedagogicae Cracoviensis Studia Geographica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Main forestry and management indices of pine (Pinus sylvestris L.) stands involving beech (Fagus sylvatica L.) in composition of Ukrainian Roztochchia
    Autorzy:
    Myklush, Yuriy
    Myklush, Stepan
    Havryliuk, Serhii
    Savchyn, Volodymyr
    Powiązania:
    https://bibliotekanauki.pl/articles/2041218.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    forest typology
    site conditions
    pine stands
    Pinus sylvestris L.
    beech stands
    Fagus sylvatica L.
    tree species composition
    Opis:
    As of 2019, the total area of forest stands with the varying proportion of Scots pine (Pinus sylvestris L.) and beech (Fagus sylvatica L.) in composition on the Ukrainian Roztochchia was 11,251.3 ha and the area of pine stands involving European beech in composition was 6879.5 ha. Pine stands involving beech in composition are formed on the fresh, moist and boggy relatively pure and relatively rich soil condition. Pine forest stands (average share of pine exceeds 56%), which include beech in composition occupy more than 80% of the total area of interest. Mature and overmature forest stands dominate most of the landscape. More than 85% of stands are characterized by an average relative completeness. Undergrowth of deciduous tree species, which is mainly formed by European beech or hornbeam (Carpinus betulus L.) and rarely by common oak (Quercus robur L.) or sycamore maple (Acer pseudoplatanus), is available under a canopy of middle-aged, ripening and mature stands. The study points to the need to rethink forest management approaches and eventually to use such methods of forest cuttings that ensure natural regeneration not only of a European beech and common oak, but primarily of a pine. The practice of creating pine plantations in such conditions favourable for its growth and development should be used only in those cases when it is impossible to achieve natural regeneration of pine.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2021, 63, 2; 81-87
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Экологические характеристики возрастных рядов культуры и насаждений естественного происхождения сосняков мшистых в заказнике «Гродненская Пуща»
    Ecological characteristics of the age series of culture and natural origin plantations of mossy pine forests in the reserve “Grodnenskaya Pushcha”
    Autorzy:
    Ивановна Садковская, Анна
    Викторович Созинов, Олег
    Powiązania:
    https://bibliotekanauki.pl/chapters/31342664.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    age range of tree-stands
    environmental factors
    Grodno Forest
    mossy pine forest
    ordination
    Pinetum pleuroziosum
    reserve
    Opis:
    The studies were carried out in 2019 on the territory of the landscape reserve Grodnenskaya Pushcha (Grodno region, Belarus) in which 26 natural and artificial communities of pine forests with mosses (Pinetum pleuroziosum) were studied on a age range from 5 to 113 years, using the trial plot method (400 m 2). Phytoindication of ecological regimes on the scales proposed by H. Ellenberg showed a tendency to decrease illumination, moisture, and trophy and an increase in acidity in the age range of pine forests with mosses. The ecological interpretation of the components (the Principal Component Analysis) of the studied pine forest communities showed that the main factors responsible for the formation of the time series of natural and artificial pine forests with mosses are forestry activities, illumination regime, and soil trophy.
    Źródło:
    Lasy przyszłości. Wyzwania współczesnego leśnictwa; 89-99
    9788367185462
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stand dynamics in natural Scots pine forests as a model for adaptation management?
    Autorzy:
    Vacek, S.
    Vacek, Z.
    Bilek, L.
    Remeš, J.
    Hůnová, I.
    Bulušek, D.
    Král, J.
    Brichta, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2077666.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Pinus sylvestris
    forest dynamics
    stands structure
    air pollution
    climatic factors
    Central Europe
    Opis:
    The paper deals with the dynamics of structure, diversity and growth of natural pine stands without direct human impact during the ten-year period in Nature Reserve (NR) Kostelecké bory, Czech Republic. The objective was to determine the main characteristics of the spontaneous development of Scots pine (Pinus sylvestris L.) forest stands in relation to their naturalness, ecological stability and adaptation to climate change and air pollution stress. Horizontal and vertical structure and species diversity of the tree layer, dead wood and natural regeneration of each permanent research plot (PRP) were evaluated (n = 6, 50 × 50 m /0.25 ha/, Northern Bohemia, 410–425 m above sea level). The average ring series of PRPs were correlated with the climatic data (precip- itation, temperature) according to individual years from the Doksy climatic station, and the air pollution data (SO2 in 1988–2015, NOX and AOT40F – ozone exposure in 1992–2015) from Radimovice station. In 2016, the stand volume increased by 26.0% to 136 m3 ha−1 (108 m3 ha−1 in 2006) and the volume of dead wood increase by 127.2% to 27 m3 ha−1 (12 m3 ha−1 in 2006). The horizontal structure of tree layer and natural regeneration was predominantly aggregated to random. More distinct changes in biodiversity and structural characteristics occurred in the natural regeneration (21.5%) compared to tree layer (2.8%). The precipitation had a significantly higher effect on radial growth compared to temperature. The lack of pre- cipitation in growing season and high temperature in previous autumn and winter were limiting factors for growth. Climatic factors had significant effect on diameter increment in July of the current year (P < 0.01) and June of the current and previous year (P < 0.05). Radial growth was negatively correlated with SO2 con- centrations (P < 0.01) and ozone exposure (P < 0.05). NOX concentrations had low effect on radial growth. The natural stand dynamics had positive effect on biodiversity and functional integrity of natural pine eco- systems.
    Źródło:
    Dendrobiology; 2019, 82; 24-42
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hodowlane kryteria kwalifikowania drzewostanów do przebudowy
    The silvicultural criteria of qualifying for conversion
    Autorzy:
    Zajączkowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1018655.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    kryteria kwalifikacji
    przebudowa drzewostanow
    lesnictwo
    cele hodowlane
    conversion
    pine and spruce stands
    broadleaved forest habitats
    Opis:
    The paper presents the results of research carried out by Polish and foreign scientists on the impact of pine and spruce stands on fertile forest habitats and formulates recommendations for the rationalisation of conversion operations in these stands.
    Źródło:
    Sylwan; 2006, 150, 12; 27-32
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ochrona przyrody i gospodarka leśna w Puszczy Białowieskiej : Brak kompleksowej strategii działania
    Nature Protection and Forest Management in the Białowieska Forest – Illegal Felling of Trees and Lack of Supervision by Competent Bodies
    Autorzy:
    Krzywicka, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/2042189.pdf
    Data publikacji:
    2020-10
    Wydawca:
    Najwyższa Izba Kontroli
    Tematy:
    Puszcza Białowieska
    ochrona przyrody
    gospodarka leśna
    drzewostany
    obszary chronione
    wycinka drzew
    kornik drukarz
    Białowieska Forest
    nature protection
    forest management
    tree stands
    protected areas
    logging
    spruce bark beetle
    Opis:
    Białowieski Park Narodowy należy do światowego dziedzictwa UNESCO od 1979 r. W 1992 r. jego obszar powiększono o białoruską część Puszczy Białowieskiej, a w 2014 r. ponownie go poszerzono. Obecnie obejmuje cały jej teren po obu stronach granicy o powierzchni 141 885 ha. Obowiązkiem Polski jako strony Konwencji UNESCO z 1972 r. dotyczącej Światowego Dziedzictwa Kulturalnego i Naturalnego jest ochrona Puszczy przed zniszczeniem i zachowanie jej w niezmienionej postaci dla przyszłych pokoleń. Z ustaleń kontroli NIK wynika jednak, że w latach 2008–2018 nie opracowano opartej na merytorycznych podstawach strategii prowadzenia gospodarki leśnej w Puszczy, która służyłaby jej ochronie. Prowadzenie cięć w drzewostanach zagrożonych obecnością kornika drukarza nie zawsze było zaś poprzedzone wnikliwą oceną ich wpływu na siedliska i gatunki chronione.
    The Białowieska Forest is one of Poland’s ten UNESCO Biosphere Reserves, which protect unique nature and cultural values of the area. In 2008, the Polish part of the Białowieska Forest was covered with the Natura 2000 PLC200004 protection. Therefore, it is a unique area, where forest management calls for special care and respecting of regulations on nature protection. However, as a result of the decisions on increased felling of trees, justified with the intention to reduce massive attacks of the European spruce bark beetle, on 20th July 2017 the European Commission filed a complaint to the EU Court of Justice claiming Poland had failed to meet the requ irements stemming from the Bird Directive and the Habitats Directive. On 17th April 2018, the Court of Justice confirmed the stance of the Commission. As a result, from July 2018 to January 2019, the Supreme Audit Office of Poland conducted the audit to check whether forest management in the Białowieska Forest was compliant with the law, including nature protection requirements.
    Źródło:
    Kontrola Państwowa; 2020, 65, 5 (394); 33-44
    0452-5027
    Pojawia się w:
    Kontrola Państwowa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Potrzeby przebudowy drzewostanów w Lasach Państwowych
    The needs related to the reconstruction of stands in the State Forests
    Autorzy:
    Czuba, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1018668.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    drzewostany gospodarcze
    przebudowa drzewostanow
    Panstwowe Gospodarstwo Lesne Lasy Panstwowe
    lesnictwo
    forest management plan
    adjustment of stands to site conditions
    managed forest type
    complete stand
    conversion
    partial stand conversion
    Opis:
    The paper presents a division of the State Forests stands by the degree of adjustment of species composition of stands to site conditions. An assumption was made that the stands whose species composition is not adjusted to the occupied biotope should be urgently rebuilt, especially those featuring low stability.
    Źródło:
    Sylwan; 2006, 150, 12; 33-38
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Warunki glebowe eutroficznych lasów jodłowych Beskidu Niskiego oraz Sądeckiego
    Soil conditions of eutrophic fir forest stands in Beskid Niski and Sadecki
    Autorzy:
    Lasota, J.
    Błońska, E.
    Zwydak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/989899.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    gory
    Beskid Niski
    Beskid Sadecki
    lasy jodlowe
    gleby lesne
    gleby eutroficzne
    wlasciwosci fizykochemiczne
    wlasciwosci chemiczne
    forest sites
    soil properties
    fir stands
    Opis:
    The paper presents the properties of soils of eutrophic fir forest stands in lower montane zone in Beskid Niski and Beskid Sądecki Mts. (southern Poland). Efforts were made to put some order in the issues related to the site system, in which the fir plays a dominant role. The study was conducted in 10 study sites reflecting the living conditions of eutrophic silver fir forest. On each plot the topography conditions were described, soil pit was done and samples for laboratory analysis were taken. We determined the following soil characteristics: pH, the content of C and N, particle size, the contents of Ca, Mg, Na and K, exchangeable acidity, aluminum content and hydrolityc acidity. Additionally, diameter at the breast height and height of firs were measured. Cambisols (Epidystric, Hyperdistric and Eutric) are soils typical for eutrophic fir forest stands. The study confirmed that the eutrophic fir forests occupy mainly moderately cool slopes: north, east and north−east. The eutrophic fir forests prefer the lower parts of the slopes or low hills. Eutrophic nature of the soil occupied by the fir forests confirms the quality of accumulated humus. The mull humus type was found the most frequently. Only in two cases moder humus type was noted. The advantageous properties of humus−mineral horizon reflects decomposition level of organic matter expressed as the proportion C/N (range from 11.2 to 19.1). Particle size of Cambisols of eutrophic fir forest stand was very diverse and was associated with the nature of the parent material. Fertility of the soils was reflected in the trophic soil index for mountain area (SIGg=30−37), which was confirmed by the high site index of these stands.
    Źródło:
    Sylwan; 2015, 159, 09; 767-777
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charakterystyka roślinności runa kształtującej się pod drzewostanami daglezjowymi (Pseudotsuga menziesii (Mirb.) Franco.) w lasach gospodarczych Republiki Czeskiej
    Characteristic of forest floor developed under Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) stands in commercial forest in Czech Republic
    Autorzy:
    Viewegh, J.
    Podrazsky, V.
    Matejka, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/990015.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    daglezja zielona
    Pseudotsuga menziesii
    drzewostany gospodarcze
    drzewostany daglezjowe
    runo lesne
    roslinnosc
    zbiorowiska roslinne
    Republika Czeska
    douglas fir
    stands
    forest floor
    plant communities
    Opis:
    The aim of study was to characterize Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) commercial stands and their influence on the forest floor plant communities. Study plots were performed in different regions of the Czech Republic. In total 44 plots were arranged in older Douglas fir stands with well developed forest floor vegetation. For the comparison, the study plots were also established in Norway spruce and broad−leaved tree species (beech, linden, oak) stands. Compared to other studied species, the main effect of Douglas fir on plants was noted in higher share of nitrophilous species.
    Źródło:
    Sylwan; 2014, 158, 04; 277-284
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Przestrzenne rozmieszczenie zimujących chrząszczy kornika drukarza (I. typographus L.) i kornika zrosłozębnego (I. duplicatus C. R. Sahlb.)
    Spatial distribution of hibernating adults of eight-toothed spruce bark beetle (I. typographus L.) and double-spined bark beetle (I. duplicatus C. R. Sahlb.)
    Autorzy:
    Onysko, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/973843.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    Ips duplicatus
    Ips typographus
    entomologia lesna
    kornik drukarz
    rozmieszczenie przestrzenne
    stadia rozwojowe
    zimowanie
    zimowiska
    kornik zrosłozębny
    leśnictwo
    stadia zimujące
    szkodniki roślin
    pine−spruce stands
    forest litter and soil
    bark
    forest protection
    curculionidae
    scolytinae
    Opis:
    Field research was conducted in selected pine−spruce stands of the Oleśnica Śląska Forest District (SW Poland), where in 2004 intensive mortality of trees infested by I. typographus and I. duplicatus was observed. The results show that most I. typographus beetles hibernated under the bark of sample trees (71.2%). Most I. duplicatus beetles hibernated in forest litter and soil (90.5%). In the litter and soil samples, the largest number of hibernating beetles (of both species) were observed in the close neighborhood of tree stems, within the radius of up to l m (96.2% and 94.0% respectively). The estimated number of beetles hibernating in the forest litter and soil under the canopy of a single sample tree was 383 and 61, respectively. In bark samples I. typographus hibernated only as adult (imago).
    Źródło:
    Sylwan; 2011, 155, 01; 21-30
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Gleby i siedliska drzewostanów nasiennych dębu szypułkowego (Quercus robur) i dębu bezszypułkowego (Q. petraea) w Polsce
    Soils and forest site types of the seed stands of common (Quercus robur) and sessile (Q. petraea) oaks in Poland
    Autorzy:
    Andrzejczyk, T.
    Sewerniak, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/989647.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    hodowla lasu
    dab bezszypulkowy
    Quercus petraea
    dab szypulkowy
    Quercus robur
    drzewostany nasienne
    siedliska lesne
    gleby lesne
    bonitacja drzewostanow
    quercus
    seed stands
    forest site
    soil
    silviculture
    Opis:
    The aim of the study was to investigate the structure of forest site types and of soil types of oak seed stands in Poland. The study was comparatively conducted with reference to sessile (Quercus petraea) and common (Q. robur) oaks. As in Poland the seed stands are established only in stands characterized by favourable both growth parameters and timber quality, it was suspected that the results of the study would enable to indicate optimal sites and soil units for oak breeding in Poland. The study was conducted on the basis of data obtained from the SEMEN database (www.bnl.gov.pl) which were broadened by descriptions of the investigated seed stands found in the Forest Data Bank (www.bdl.lasy.gov.pl). For both oak species, the research was conducted with reference to the two types of seed stands: permanent (WDN) and temporary (GDN). In total, 531 stands of Quercus petraea and 2043 of Q. robur located across whole Poland were investigated in the study. It was found that optimal soils as well as forest site types overlap for both investigated oak species only for fresh broadleaved forest (Lśw). For other forest type sites distinct differences for the oak species were found. The optimum for common oak were expanded towards the wet sites (moist broadleaved forest – Lw, and riparian forest – Lł), while for sessile oak towards semi−fertile mixed broadleaved forest (LMśw). It is interesting that seed stands of both oak species overgrow not only fine−textured soils, but significant share of them (ca. 50% area of Q. petraea and 15% of Q. robur seed stands) occurs on sandy soils (Brunic Arenosols mainly). It proves that Brunic Arenosols constitute forest sites enabling production of broadleaved forests characterized by favourable growth parameters and high timber quality. However, it is possible unless the soil have been podzolized by conifers due to podzolized Brunic Arenosols were rarely represented in the oak seed stands and, if so, the stands were characterized by relatively low site index. It was also stated that on podzolized Brunic Arenosols of fresh mixed coniferous forest (BMśw) admixture of oak should enable reducing negatively impact of conifers on a soil.
    Źródło:
    Sylwan; 2016, 160, 08; 674-683
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Struktura wielopokoleniowych drzewostanów sosny zwyczajnej w strefie brzegowej jeziora Bełdany (Puszcza Piska)
    Structure of multi-generation Scots pine stands growing in the littoral zone of Beldany Lake [Pisz Forest]
    Autorzy:
    Żurkowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1019557.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    drzewostany wielopokoleniowe
    drzewostany sosnowe
    jezioro Beldany
    Puszcza Piska
    sosna zwyczajna
    strefa brzegowa
    lesnictwo
    struktura drzewostanu
    Pinus sylvestris
    drzewa lesne
    stand structure
    scots pine
    pisz forest
    littoral stands
    Opis:
    Pine stands growing in the littoral zone of Bełdany Lake were established by natural regeneration. On the sites under study pine forms multi−generation stands and regenerates continuously showing two culmination periods in the years 1770−1800 and 1930−1980. Pine population at the age of 200−230 years retains good quality and high vitality. Similarly, younger generation pines that grow under the shelter of the canopy even for 100 years retain the attributes of normal growth after being exposed.
    Źródło:
    Sylwan; 2006, 150, 01; 20-30
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Problemy ochrony lasów prywatnych Małopolski ze szczególnym uwzględnieniem górskich
    Protection problems of private forests in Malopolska with special reference to mountain spruce stands
    Autorzy:
    Król, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1009067.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Malopolska
    lasy prywatne
    ochrona lasu
    drzewa lesne
    swierk
    Picea
    szkodniki roslin
    kambiofagi
    owady
    kornik drukarz
    Ips typographus
    rytownik pospolity
    Pityogenes chalcographus
    wystepowanie
    drzewostany swierkowe
    zamieranie lasow
    choroby roslin
    forest ownership
    forest land community
    spruce stands
    bark beetles
    poland
    Opis:
    The paper presents results of the research carried out between 2004 and 2008 on the effect of ownership category on the threat to spruce stands from cambiophagous insects. The share of dead trees in the stands under individual and community ownership has been determined. It has been shown that the existing threats to spruce stands from the European bark beetle and the need for their salvation require more attention to be given to the training of forest owners in prevention and protection.
    Źródło:
    Sylwan; 2010, 154, 10; 694-704
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Tekstura karpackiego dolnoreglowego drzewostanu mieszanego o charakterze pierwotnym
    Texture of a primeval lower montane mixed forest in the Carpathians
    Autorzy:
    Kołodziej, Z.
    Paluch, J.
    Bartkowicz, L.
    Pach, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/989790.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Babiogorski Park Narodowy
    regiel dolny
    drzewostany mieszane
    drzewostany swierkowo-bukowo-jodlowe
    las pierwotny
    tekstura drzewostanu
    sklad gatunkowy
    drzewa lesne
    liczba drzew
    piersnicowe pole przekroju
    primeval forest
    mixed stands
    spatial pattern
    structural heterogeneity
    diversity index
    forest dynamics theory
    Opis:
    The aim of this study was to characterize the texture of a primeval forest composed of Fagus sylvatica (L.), Abies alba (Mill.) and Picea abies ((L.) H. Karst). Empirical data were collected in the Babia Góra National Park (southern Poland) in the stand being under strict protection since 1934. 259 circular plots with a radius of 7.0 m and an area of 154 m² each were established in nodes of 20×20 m grid. For individual plots and blocks of the combined plots representing gradient of spatial scales between 0.015 and 0.640 ha, the number of trees, diameter at breast height (dbh) distributions, basal areas and the values of structural diversity indices of Gini (GI), Shannon (SH) and Staudhammer−LeMay (STVI) were determined. The indices were also calculated for several types of theoretical distributions. Based on the values obtained for the theoretical distributions, the individual plots and the blocks of the combined plots were classified as representing simple (GI≤0.30;STVI≤0.10), moderately diversified (0.300.45; STVI>0.30) dbh structure. For all the spatial scales analyzed the average values of GI and STVI indices reached the level typical for populations of a high structural diversity (i.e. exceeded the values of 0.45 and 0.30 respectively). According to the GI and STVI values, the portion of stand patches with complex dbh structure ranged from 70.9% and 68.2% at the individual plots scale, respectively, up to 100% in the blocks of 16 plots (4×4). In general, in all the spatial scales analyzed the spatial diversification of the dbh distributions and basal area levels was higher than in managed selection forests and much higher than in managed single−storied stands. The dominant frequency of highly diversified dbh distributions found in the analysed stand was not concordant with the predictions of the forest dynamics theory based on developmental stages, according to which in primeval forests with a significant partition of Abies alba and Picea abies should prevail stand patches of rather simple dbh structure, characteristic for the long−lasting optimum stage.
    Źródło:
    Sylwan; 2015, 159, 07; 600-609
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena stopnia uszkodzenia liści drzewostanów dębowych Nadleśnictwa Wołów dotkniętych klęską powodzi
    Assessment of leaf damage in oak stands in the flood-affected Wolow Forest Division
    Autorzy:
    Kuzmiński, R.
    Szewczyk, W.
    Korczyński, I.
    Łakomy, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1311485.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    tereny pokleskowe
    tereny popowodziowe
    drzewostany debowe
    drzewa lesne
    dab
    Quercus
    defoliacja
    liscie
    uszkodzenia lisci
    szkodniki roslin
    owady
    Nadlesnictwo Wolow
    flood
    defoliation
    Wołów Forest Division
    oak die-back
    pest insects
    oak stands
    Opis:
    This study examines the effect of flood on oak stands in the Wołów Forest Division by assessing the loss of leaf area due to insect feeding as determined in laboratory analyses of samples collected from standing trees. We compared stands, in which water stagnated for at least one month and stands with no water stagnation. It was found that the mean damage to the carbon assimilating organs of stands with stagnating water was lowered by approximately 6% compared to stands that were not affected by flood. Thus, no definite effect of flood contributing to losses of carbon assimilating organs in oak trees could be shown.
    Źródło:
    Leśne Prace Badawcze; 2015, 76, 3; 297-303
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamika i główne kierunki zmian w drzewostanach zagospodarowanej części Puszczy Białowieskiej
    Dynamics and main direction of change in forest stands constituting the managed part of Bialowieza Forest
    Autorzy:
    Bruchwald, A.
    Dmyterko, E.
    Brzeziecki, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/985942.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Puszcza Bialowieska
    drzewostany gospodarcze
    dynamika drzewostanu
    siedliska lesne
    struktura drzewostanu
    sklad gatunkowy
    struktura wiekowa
    miazszosc drzewostanow
    przyrost miazszosci
    abiotic and biotic threats
    forest age structure
    low−productivity stands
    stand productivity
    stand volume
    stand stability
    species composition
    wind risk model
    Opis:
    The paper describes current (in years 2007−2017) changes of basic parameters of forest stands that constitute the managed part of Białowieża Forest (ca. 53,000 ha), divided into three forest districts: Białowieża (12,600 ha), Hajnówka (19,700 ha) and Browsk (20,400 ha). The investigated tree stands represent different phases of ecological succession, modified by silvicultural treatments and other human activities. The course of the succession processes is varied, depending, first of all, on local site conditions, consisting mainly of fresh sites (ca. 60%) – particularly fresh broadleaved forest, and encompassing exceptionally high fraction of wet and swamp sites (40%) – especially wet broadleaved forest site type. Most stands represent the intermediate, highly productive phase of succession, with spruce and oak as the dominant tree species. In particular, such stands are common in Białowieża and Hajnówka forest districts. Recently, the share of the mentioned stands is declining, most intensely in the Browsk Forest District. In 2017 alone, 430 ha of highly productive forest stands disappeared from the Białowieża Forest. The process of decay involved mixed stands; besides of spruces which were killed by a current bark beetle infestation, also many oaks, pines, birches, alders as well as rare and valuable minor tree species (such as ashes and maples) died. Dying spruce and, more often, oak stands are often replaced by low−productive hornbeam trees, occupying earlier lower stand strata in such stands. The resulting hornbeam stands are often distinguished by low crown closure and low productivity. Tree stands occurring in the Białowieża Forest are among the most endangered by wind damage stands in Poland. It means that in case of strong winds, several trees will be broken and/or uprooted. The intensity of such phenomena will be further increased by the high tree volume of stands as well as by the presence of many gaps in forest canopy, caused by a massive mortality of spruce trees. In general, one may expect that in the nearest future many stands occurring in the Białowieża Forest, built by different tree species, will be subject to a massive decay. The list of factors contributing to this process is long and involves, among other things, recurring droughts during the growing season, unfavorable changes in ground water table and increased frequency of strong winds. All these factors negatively influence the health status of trees, which further favours the development of parasitic fungi and insects. In consequence, there is a high probability that many areas in the Białowieża Forest will, for a long time, retain a treeless character and/or will be occupied by low−productive and single species hornbeam stands.
    Źródło:
    Sylwan; 2018, 162, 11; 897-906
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Tempo i kierunki zmian składu gatunkowego drzewostanów naturalnych w wybranych zbiorowiskach leśnych Puszczy Białowieskiej
    Rate and direction of changes in tree species composition of natural stands in selected forest associations in the Bialowieza Forest
    Autorzy:
    Paluch, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1313006.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    Puszcza Bialowieska
    drzewostany naturalne
    zbiorowiska lesne
    sklad gatunkowy
    bor swiezy brusznicowo-sosnowy
    bor mieszany trzcinnikowo-swierkowy
    grad miodownikowo-grabowy
    grad typowy
    grad trzcinnikowy
    leg olszowo-jesionowy
    zmiany skladu gatunkowego
    podobienstwo skladu gatunkowego
    stale powierzchnie obserwacyjne
    hornbeam expansion
    natural stands
    permanent study plots
    ash dieback
    Białowieża forest
    Opis:
    The main aim of the study was to determine changes in the species composition and structure of natural tree stands in the Białowieża Forest (BF), which occurred in the years 1975-2012, as well as to evaluate their trends, directions and rate. The study was carried out on 121 permanent research plots (50×50m), which represented the most important forest phytocenoses in BF, i.e. fresh pine-whortleberry forest Vaccinio vitis-idaeae-Pinetum Sokoł. 1980, fresh mixed spruce-reed grass forest Calamagrostio-Piceetum Soko³. 1968, oligotrophic form of hornbeam - bastard balm forest Melitti-Carpinetum Soko³. 1976, different forms of linden- hornbeam forest: Tilio-Carpinetum Tracz. 1962, alder-ash forest Fraxino-Alnetum W. Mat. 1952 and sub-boreal spruce forest on bog moss Sphagno girgenshonii- Piceetum Polak. 1962. On the plots selected, there was measured the diameter at breast height (DBH) of all trees, as well as every tree and shrub up to 1.3 m high was counted and described with reference to species. The measurements and observations were regularly repeated every 10-15 years. The results showed that over the last period of nearly 40 years, there has increased a share of common hornbeam Carpinus betulus L. in the structure of forest stands in numerous BF associations. This tree species has expanded into different forest habitats including poor, medium fertile and wetland sites. The results obtained indicate a trend towards formation of linden-hornbeam forests in BF phytocenoses. The most evident changes were recorded in hornbeam - bastard balm forest. In natural conditions of the majority of forest associations analyzed, there prevailed hornbeam trees in forest regeneration, except for the stands in fresh mixed pine forest and spruce forest on bog moss. In the latter two cases, hornbeam showed signs of its presence in the last observation period. Norway spruce (Picea abies L.) retreated into oligotrophic forest associations. In the recent decades, spruce populations have been dramatically reduced in the stands in mixed coniferous and different kinds of broadleaved forests. There have also decreased a share of light-demanding tree species, such as Scots pine (Pinus silvestris L.), pedunculate oak (Quercus robur L.) and silver birch (Betula pendula L.) in BF tree stands, including their regeneration-layer. Especially, Scots pine regeneration has not been successful. In the short period of time (about 15 years) there has been observed rapid and outsized reduction of ash Fraxinus excelsior L. populations in natural conditions of alder-ash forests. All through the last 10-15 years, there has been also observed increased rate of change in stand species composition. The trend and rate of change in stand species composition point out to a possibility of human intervention towards stimulation of natural regeneration so as to preserve valuable populations of threatened tree species in the Białowieża Forest.
    Źródło:
    Leśne Prace Badawcze; 2014, 75, 4; 385-406
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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