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    Wyświetlanie 1-8 z 8
    Tytuł:
    Estimating the growth of 20- to 26-year-old lodgepole pine plantations in the Leningrad region of Russia
    Autorzy:
    Zhigunov, Anatoly V.
    Butenko, Оlesia Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/2044167.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    introduction
    lodgepole pine
    forest plantations
    growth
    standing crop
    Opis:
    The aim of our study was to compare the growth rates of lodgepole pine (Pinus contorta Dougl.) with those of Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies L.) in plantations. The experimental plots were established in 1988, 1989 and 1994 in the southern part of the Leningrad region. In 2014, the condition of the plants on those plots was examined and their linear parameters were measured. The comparison of Scots pine with lodgepole pine of the same age growing in similar soil conditions has shown that Scots pine has only an insignificant advantage over lodgepole pine in the growth rate. In the mixes of Norway spruce and lodgepole pine, Norway spruce considerably suppresses the growth of lodgepole pine. Lodgepole pine has successfully adapted to the climatic conditions of the Leningrad region of Russia, which is easy to see from the well-preserved plantations and their annual bearing. No significant damage because of either diseases or insect pests has been revealed. It is for the first time that the volume yield of lodgepole pine was determined in 20- to 26-year-old experimental plantations in the Leningrad region of Russia.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2019, 61, 1; 58-63
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    How to best utilise forests for carbon dioxide sequestration?
    Autorzy:
    Kozłowski, Jan
    Powiązania:
    https://bibliotekanauki.pl/articles/704590.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    CO2 sequestration
    natural forests
    forest plantations
    biocarbon
    biodiversity
    Opis:
    Forests may play important role in partial neutralization of CO2 emission. To maximize their potential it is unavoidable to divide them into forests that will be allowed to evolve toward natural state and forest predisposed for timber production, supplemented with forest plantations. Natural forests store almost twice more carbon in biomass and soil than managed forests, and carbon contained in wood from plantations and timber-producing forests will be frozen long time in wooden constructions. Gasification of wood debris instead of burning will allow for production of biocarbon that added to soil will residue there through decades, and will decrease necessary amount of artificial fertilizers, which production is an important source of carbon dioxide. Forests evolving to natural state will be less prone to fire and hurricanes, and will better protect biodiversity. Presented project is not contradictory to the project “The Forest Carbon Farms” of State Forests, but allows to reach better results in shorter time and likely at lower cost.
    Źródło:
    Nauka; 2019, 4
    1231-8515
    Pojawia się w:
    Nauka
    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:
    Wpływ sposobu przygotowania gleby na zgrupowania chrząszczy (Coleoptera) występujące na uprawach leśnych założonych na gruntach porolnych
    Effect of soil preparation on beetle (Coleoptera) assemblages occurring in the forest plantations established on former farmland
    Autorzy:
    Byk, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/973761.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    grunty porolne
    przygotowanie gleby
    zalesianie
    uprawy sosnowe
    fauna
    owady
    Coleoptera
    leśnictwo
    uprawy leśne
    chrząszcze
    wykaz gatunków
    zgrupowania zwierząt
    former farmland
    forest plantations
    soil preparation
    Opis:
    The presented study concerns the effect of the methods of soil preparation on the changes in the number and species composition of beetle assemblages occurring on the former farmland designed for afforestation. 48 research areas representing four soil preparation variants were established with Barber traps set up. 5,158 beetles representing 137 species from 27 families were collected during the study period. The results indicate that soil preparation on the former farmland consisting in deep ploughing and shallow ploughing with subsoiling favours the encroachment of both the ubiquitous and forest species leading to the faster development of forest type beetle assemblages. The preparation of soil on the former farmland by shallow ploughing and ridge formation favours the long−term presence of beetle assemblages in open areas.
    Źródło:
    Sylwan; 2011, 155, 09; 622-632
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena liczebności pędraków Melolonthinae w pułapkach trocinowych w uprawach sosny zwyczajnej (Pinus sylvestris L.)
    Assessing the number of Melolonthinae larvae in the sawdust traps in young Scots pine (Pinus sylvestris L.) plantations
    Autorzy:
    Szmidla, H.
    Tkaczyk, M.
    Małecka, M.
    Sierota, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/986677.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    ochrona lasu
    uprawy lesne
    sosna zwyczajna
    Pinus sylvestris
    pulapki trocinowe
    szkodniki roslin
    Melolonthinae
    pedraki
    liczebnosc
    melolontha spp.
    young forest plantations
    root−pest monitoring
    Opis:
    Root−feeding insects are an increasingly studied group of herbivores, whose impact on plant productivity and are some of the most damaging forest pests in Europe. Due to the mass feeding on the roots of seedlings and older trees in young plantation and stands, Melolonthinae larvae are classified as pests, which are the most dangerous on the land dedicated to afforestation. The research was located in the Wyszków Forest District (52°43'15' N; 21°39'03' E) on the mixed coniferous and mixed deciduous forest habitats. This study evaluated sawdust traps as the method for assessing abundance of Melolonthinae larvae in Scots pine plantations established artificially from open nursery, container production, and from natural regeneration. In spring 2015 i) ‘small sawdust pits’ in rows between seedlings, and ii) pits without soil in adjacent inter−rows as control were prepared. In spring and autumn 2016, and in spring 2017 sawdust and soil from both variants of pits were sieved and Melolonthinae larvae were counted and compared. The obtained results were analyzed in two ways. The first analysis compared the occurrence of grubs in small pits with or without sawdust, while the other one analysed influence of the time of making small pits, independently for the variant with or without sawdust. The final stage was to compare the number of Melolonthinae larvae in small pits between the origin of the seedlings. We found a greater number of grubs in spring assessment than in autumn. Both kinds of small pits showed higher number of Melolonthinae larvae when compared to traditional method of ‘great pits’. The number of Melolonthinae larvae was significantly higher on the plots with container seedlings than the others. The conceptual assumptions of this alternative and environmentally safe method of ‘sawdust traps’ seems to be optimistic.
    Źródło:
    Sylwan; 2018, 162, 07; 590-597
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Model klasyfikacyjny prognozowania wystąpienia masowych szkód w uprawach leśnych od pędraków chrabąszczy (Melolontha Fabr.)
    Classification model for prediction of mass damage in young forest plantations caused by larvae of cockchafer (Melolontha Fabr.)
    Autorzy:
    Drozdowski, S.
    Jankowski, P.
    Byk, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/993325.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    ochrona lasu
    uprawy lesne
    szkodniki roslin
    chrabaszcz
    Melolontha
    pedraki
    szkody w lesie
    prognozowanie
    modele klasyfikacyjne
    melolontha
    logistic regression
    root pests
    young forest plantations
    Opis:
    Study presents a classification model for predicting the occurrence of mass damage in young forest plantations caused by insect pests on roots belonging to Melolontha genus. Logistic regression model was built on the basis of 10 taxation features describing 177 young stands. Habitat fertility, occurrence of Scots pine and European beech, and weed infestation of the habitat are the most significant features that influence mass occurrence of cockchafer larvae acting as insect pests on roots in plantations.
    Źródło:
    Sylwan; 2013, 157, 09; 678-685
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Roślinność naturalna acidofilnej dąbrowy i plantacji sosny, daglezji i buka w rezerwacie Dąbrowa Krzymowska (Puszcza Piaskowa)
    Natural vegetation of acidophilous oak forest and Scots pine, Douglas fir and beech plantation in the Dabrowa Krzymowska nature reserve (Piaskowa Forest)
    Autorzy:
    Puchałka, R.
    Płąchocki, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/990889.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Puszcza Piaskowa
    rezerwaty przyrody
    rezerwat Dabrowa Krzymowska
    zespol Calamagrostio-Quercetum
    roslinnosc
    analiza porownawcza
    plantacje drzew lesnych
    drzewostany sosnowe
    drzewostany daglezjowe
    drzewostany bukowe
    calamagrostio arundinaceae−quercetum
    forest plantations
    nature protection
    Opis:
    Phytosociological relevés from a natural acidophilous oak forest Calamagrostio−Quercetum, as well as Scots pine, Douglas fir and beech plantations located in the same habitat were analysed. Our investigations did not confirm the negative effect of Scots pine on biodiversity. We observed a decline of species number with the decrease of light availability. The undergrowth biodiversity in the oak forest was reduced by the presence of beech the most. The observed quantitative and qualitative differences among the compared forests resulted from the combined effects of light availability, the character of plant litter, agrotechnical works, as well as dispersal abilities of plant species.
    Źródło:
    Sylwan; 2014, 158, 03; 212-220
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ warunków siedliskowych na zróżnicowanie wysokości dębu na gniazdach
    Effect of habitat conditions on the variation of oak height in the gaps
    Autorzy:
    Andrzejczyk, T.
    Bolibok, L.
    Buraczyk, W.
    Drozdowski, S.
    Szeligowski, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/991003.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    rebnie zupelne gniazdowe
    hodowla lasu
    odnowienia lasu
    odnowienia na gniazdach
    drzewa lesne
    dab szypulkowy
    Quercus robur
    wzrost roslin
    warunki siedliska
    siedliska lesne
    bor mieszany swiezy
    las mieszany swiezy
    las swiezy
    pedunculate oak
    clear−cut gap
    plantations
    forest regeneration
    patch cutting system
    Opis:
    The paper presents the study on the height of 10−12−year−old pedunculate oak regeneration in clear−cut gaps in three fertility variants: mezotrophic of poorer productivity (fresh mixed coniferous forest – BMśw), mezotrophic of higher productivity (fresh mixed deciduous forest – LMśw) and eutrophic (fresh deciduous forest – Lśw). BMśw and LMśw were represented by two locations: Gostynin (G) and Parczew (P), while Lśw – by one: Czarna Białostocka (CzB). We analysed the variation of oak height in the patches along the north−south (N−S) and east−west (E−W) gap axes. In each location 3−5 gaps were selected and measurements taken on three transects along the N−S axis located in the western (W), central (C) and eastern (E) part. Significant differences in oak height were found along the N−S axis. Oaks in the BMśw and LMśw habitats in the south−central part, and those in the Lśw habitat in the centre−northern part of the patch were the highest. The height growth of oaks on sandy soils (BMśw, LMśw) was found to be limited by moisture deficit, while on loamy soils (Lśw) – by light deficiency. The differences in oak height along the E−W axis were smaller and less apparent, indicating a tendency towards the reduction of their height growth in the central part of the gap.
    Źródło:
    Sylwan; 2014, 158, 06; 404-413
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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