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    Wyświetlanie 1-14 z 14
    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:
    Illuminance under canopy in different types of forest in the northern taiga
    Autorzy:
    Feklistov, Pavel
    Sobolev, Alexandr
    Barzut, Oksana
    Neverov, Nikolay
    Powiązania:
    https://bibliotekanauki.pl/articles/2041229.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    illumination
    forest type
    spruce forests
    pine forests
    Opis:
    The illumination under the canopy in different types of pine and spruce forests is considered. The research was carried out in different points of the Northern taiga of the Arkhangelsk region. Illumination was measured using a luxmeter in different directions: at the level of the moss-lichen layer, at the level of the grass-shrub layer and at a height of 1.3 m; at different distances from the tree trunk; at different distances from the edge of the forest. Illumination in pine forests at the level of the moss-lichen layer is 2.3 times higher than in spruce forests. Under the canopy of spruce forests, it is 1–3%, and in the pine forests, 3–9% of the illumination in the open. Illumination from tree trunks to the edge increases in pine and spruce forests equally. The lowest illumination is observed at the level of the moss-lichen layer, then it increases to the grass-shrub layer, and then practically does not change. However, the difference between pine and spruce forests is consistently high 47%. The decrease in illumination in the tree stand as it moves away from the edge in blueberry pine forests is observed up to a distance of 10 m from the edge, and in blueberry spruce forests up to 6 m.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2021, 63, 2; 112-115
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The relationship between height and diameter trees of Scots pine (Pinus sylvestris L.) and the extent of crown defoliation in the Kampinos National Park
    Autorzy:
    Przybylski, Paweł
    Tyburski, Łukasz
    Mohytych, Vasyl
    Powiązania:
    https://bibliotekanauki.pl/articles/2041706.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    Scots pine
    health condition
    defoliation
    Kampinos Forest
    Opis:
    Forests in Kampinos National Park contain some of the most valuable tree populations in Poland. Particularly interesting are stands of Scots pine (Pinus sylvestris L.) that are more than 130-years-old. Periodic observations of the health of tree crowns in these stands facilitates a wide range of research investigations. This article evaluates statistical relationships between allometric features of trees and the occurrence and severity of crown defoliation. Observations were made of 5 pine populations in 2017 and 2019, in which detailed data were collected for 250 trees. The percentage loss of the assimilation apparatus and level of stand damage were calculated. The results revealed a significant increase in defoliation between 2017 and 2019. The deterioration of crown condition was particularly evident on the most fertile sites. The degree of crown damage was not correlated with tree height or diameter. The greatest increase in defoliation between 2017 and 2019 was observed for the most severely damaged trees growing on fertile sites. This study contributes analyses aimed at correlating the allometric features of a stand with its health. Such information is valuable as it describes the status of the analysed stands, as well as providing information about how trees have responded to environmental conditions. In this study, crown defoliation coincided with a period of drought in Poland, which appears to have affected pine stands. For these reasons, the results are of both scientific and practical value.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2020, 62, 1; 22-30
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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:
    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:
    Dynamic forest fire risk evaluation in Poland
    Autorzy:
    Szczygieł, Ryszard
    Kwiatkowski, Mirosław
    Kołakowski, Bartłomiej
    Piwnicki, Józef
    Powiązania:
    https://bibliotekanauki.pl/articles/2041632.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    forest fire risk degree
    dynamic forest risk
    pine litter moisture content
    method of forecasting forest fire risk
    Opis:
    The weather conditions determine the dynamic forest fire risk. In Poland, the dynamic forest fire risk is calculated using a method elaborated at the Forest Research Institute. The forest fire risk degree (4-level scale) is calculated every day at 9:00 am and at 1:00 pm during the fire season (1.03 till 30.09) for 60 prognostic zones selected on the basis of stand and climatic conditions. 97% of all annual forest fires occur during the fire season. Surface fires are a significant part of the fires (90%) and occur in forest stands where pine is the dominant species. The purpose of the research was to prepare a new method of forecasting forest fire risk, which would enable a more precise method of evaluation of the risk of an outbreak of fire in relation to the existing and forecast meteorological conditions in forests. The results obtained during testing of this method indicate a high accuracy in forecasting fire risk and a satisfactory precision of formulae for calculating moisture content of pine litter. The assumptions of the new method included: – possibility of determining the actual risk of fire for the given area, being the average for all measurement points located on the terrain equally those in which the moisture content measurement of litter has not been performed, – possibility of forecasting the risk of forest fire for the afternoon in the morning hours of the given day, – possibility of forecasting fire risk for the following day, – forecasting moisture content of litter for the afternoon and of the given day and for the following day, – drawing up a method enabling limitation of operational costs of fire prevention system.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2020, 62, 2; 139-144
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Growth of Scots pine (Pinus sylvestris L.) on forest and former agricultural lands in Krynki Forest District
    Autorzy:
    Zakrzewski, J.
    Leosz, K.
    Jedrzejuk, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/38651.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    plant growth
    height growth
    radial growth
    Scotch pine
    Pinus sylvestris
    needle parameter
    forest
    agricultural land
    Krynki Forest District
    Opis:
    The paper shows differences in morphological and anatomical features of the Scots pine (Pinus sylvestris L.) growing on former agricultural and forest lands. It was found that at the same age and in the same climatic conditions Scots pines from former agricultural land had larger stem dimensions and needle sizes as compared with the trees growing on forest land. These results lead to an interesting conclusion connected with future afforestation and reforestiation in the Krynki Forest District.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2013, 55, 2
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamics of non-structural carbohydrates in Pinus pallasiana D. Don needles under different forest growth conditions of ravine anti-erosion plantations
    Autorzy:
    Bessonova, V.
    Yakovlieva-Nosar, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2106662.pdf
    Data publikacji:
    2022
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    ravine
    man-made plantation
    Crimean pine
    Pinus pallasiana
    forest
    growth condition
    sugar
    starch
    Opis:
    The research was aimed at analysing the peculiarities of non-structural carbohydrate metabolism in the needles of Pinus pallasiana D. Don in anti-erosion plantations on the slope and in the thalweg of the Viyskovyi ravine under different forest growth conditions. The ravine is located in the Dnipropetrovsk region and belongs to the southern geographical variant of ravine forests. The studied plants grew at three experimental sites of man-made plantation: in the thalweg (forest growth conditions – mesophilic, fresh, CL2), in the middle part of the slope of the southern exposure (mesoxerophilic, somewhat dry, or semi-arid, CL1) and on the upper part of this slope (xerophilic, arid, CL0–1). Changes in glucose, fructose, reducing sugars, sucrose and starch during the period from May to October were studied. The concentration of osmotically active substances (glucose, sucrose) increases in the months with the most unfavourable hydrothermal parameters, especially in plants of mesoxerophilic and xerophilic forest growth conditions. The dynamics of fructose content revealed two maxima (July and October), when the concentration of glucose tends to increase steadily, with the highest values found in October. During the study period, the level of fructose in the needles under the arid conditions of the upper and middle parts of the slope was much lower than under the fresh conditions of the thalweg. The dynamics curve of the starch content tends to decrease from the maximum values in May to the first minimum in August. It is followed by some increase in the concentration of this polysaccharide that does not reach the previous values. The second minimum is registered in October. Such changes in the level of starch in the needles of plants are observed under all forest growth conditions. The decrease in polysaccharide content is consistent with the increase in glucose and sucrose, especially in August. A more significant increase in the concentration of soluble osmoprotective sugars (glucose, sucrose) in P. pallasiana needles under unfavourable hydrothermal conditions compared to normal moisture conditions indicates the ability of plants to adapt to mesoxerophilic and xerophilic conditions.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2022, 64, 1; 38-48
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Supplementary irrigation at container nursery
    Autorzy:
    Durlo, G.
    Jagiello-Lenczuk, K.
    Kormanek, M.
    Malek, S.
    Banach, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/45462.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    water balance
    forest
    seedling
    nursery
    Scotch pine
    Norway spruce
    oak
    European beech
    forest tree
    seedling production
    climate condition
    forestry
    Źródło:
    Leśne Prace Badawcze; 2018, 79, 1
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    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:
    Genetic identification of fungi colonising seedlings of the Scots pine (Pinus sylvestris L.) in the forest nursery in Korenevka (Belarus)
    Autorzy:
    Baranov, O.Y.
    Oszako, T.
    Nowakowska, J.A.
    Panteleev, S.V.
    Powiązania:
    https://bibliotekanauki.pl/articles/38622.pdf
    Data publikacji:
    2010
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    genetic identification
    fungi
    seedling
    Scotch pine
    Pinus sylvestris
    forest nursery
    molecular identification
    pathogenic fungi
    mycorrhizal fungi
    Korenevka village
    Belorussia
    Opis:
    DNA amplification was investigated in order to determine fungal species present in the Koronevka forest nursery (eastern part of Belarus). For this purpose, needles and roots of Scots pine (Pinus sylvestris L.) seedlings as well as soil collected around roots were examined for ITS1– 5.8S RNA-ITS2 region sequences and compared with GenBank data. DNA analysis of seedlings microflora and soil samples allowed identification of twelve different species of fungi. Among these Cladosporium herbarum Link, Davidiella tassiana Crous and U. Braun, Alternaria alternata Nees and Cryptococcus pinus Vuill. were often found in symptomatic needles. Pathogenic fungal species were detected in 57% of shrunken needles. Examination of DNA extracted from seedling roots revealed occurrence of Wilcoxina mikolae Chin S. Yang and Korf, C. herbarum, and A. alternata. In soil samples there were identified fungi of the same species, with predominance of mycorrhizal fungus W. mikolae (in 100% of samples) and C. pinus (in 20% of samples). The results demonstrated usefulness of molecular markers for the detection and identification of fungi.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2010, 52, 1
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of forest growth conditions on the wood density: the case of Amur Region
    Autorzy:
    Romanova, Natalia A.
    Zbirnov, Alexander B.
    Yust, Natalia A.
    Fucheng, Xu
    Powiązania:
    https://bibliotekanauki.pl/articles/2045741.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    forest growth conditions of the Amur region
    Amur region
    wood density
    Dahurian larch
    Scots pine
    wood moisture content
    Asian white birch
    Opis:
    The problem of determining the dependence of the chainsaw on the density of wood, substantiation of effective options for the number of chainsaws in the assortment and whiplash method of logging is quite relevant. In the Far East of Russia, in particular, in the Amur region, the forest growth conditions are different from the western ones, and therefore, the properties of the wood differ from the generally accepted ones. The article describes forest growth conditions that influence the properties of the wood in areas of the Amur region. Using the method of density determination, the density of larch, pine and birch were studied for first time in the areas of the region. The dependence of the density on humidity, age, species, season of the year and the area of growth was found out. The results of the research showed that under humidity of 70%, the density of larch was 1088.99 kg/m3, it was 919.8 kg/m3 for pine and it was for birch 915.9 kg/m3.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2018, 60, 4; 292-298
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Porównanie odnowień sosny zwyczajnej powstałych z siewu i sadzenia w różnych terminach
    Comparing Scots pine regeneration established by sowing and planting at various times of year
    Autorzy:
    Barzdajn, W.
    Kowalkowski, W.
    Tomczak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1290847.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    hodowla lasu
    odnowienia lasu
    drzewa lesne
    sosna zwyczajna
    Pinus sylvestris
    odnowienia z siewu
    odnowienia przez sadzenie
    wzrost roslin
    zageszczenie roslin
    methods of forest regeneration
    pine growth
    density
    Opis:
    The aim of this study was to evaluate the practical feasibility of two forest regeneration methods using Scots pine Pinus sylvestris L. To this end, comparative experiments were established in the Złotoryja and Legnica Forest Districts. The site in Złotoryja had been clear cut, while the experimental plot in Legnica was established at a location damaged by wind in 2009 and cleared from wind throws and wind-broken trees before the experiment. Four different dates for sowing and two for planting were chosen in order to investigate the potential forest regeneration with respect to time. Both experiments were established according to the same design: a complete random block design with five replication blocks. To each plot we applied approximately 53 g (1.2 kg/ha) of seeds and planted 230 seedlings (10 200 seedlings/ha). In 2017, the height of the pine trees was recorded and their increment in height was measured in 2016 as well as 2017. A preliminary analysis of results was conducted using ANOVA for multiple experiments in order to identify significant differences and to then combine variables to form homogeneous groups to which the Duncan multiple range test could be applied. For growth traits, the ANOVA showed significant differences between experimental sights as well as a significant interaction of factors with the experimental site. In terms of planting, April was the most advantageous resulting in the greatest tree height in both forest districts, while in the Legnica Forest District the saplings planted in April also showed the greatest annual increments. Among the sowing dates, the most advantageous was the winter sowing, while the April sowing date produced the least desirable results. In conclusion, both sowing and planting are effective methods to establish pine cultures in coniferous forest. Furthermore, both methods may be performed at the currently recommended spring date, but they may also be postponed to summer and winter dates provided favorable weather conditions prevail.
    Źródło:
    Leśne Prace Badawcze; 2019, 80, 3
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wzrost odnowień na gruntach porolnych prowadzonych w ramach przebudowy drzewostanu metodą sztucznych luk
    Growth of broadleaved species on post-agricultural lands introduced during the process of stand conversion with a use of artificial gaps
    Autorzy:
    Zachara, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1291881.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    grunty porolne
    hodowla lasu
    odnowienia lasu
    sosna zwyczajna
    Pinus sylvestris
    huba korzeni
    przebudowa drzewostanow
    luki drzewostanowe
    gatunki domieszkowe
    dab bezszypulkowy
    buk zwyczajny
    lipa drobnolistna
    przebudowa drzewostanu
    dąb bezszypułkowy
    Scots pine
    root-rot fungus
    forest conversion
    sessile oak
    common beech
    small-leaved lime
    Opis:
    This paper presents results on the restoration of Scots pine stands established on post-agricultural lands undergoing conversion into mixed stands. Sessile oak (Quercus petraea), common beech (Fagus sylvatica) and small-leaved lime (Tilia cordata) seedlings were planted in artificially created gaps (0,02 ha to 0,05 ha each) cut in six experimental plots (Forest Districts: Bielsk, Krynki, Sobibór, Dobieszyn, Skrwilno and Łupawa) located in 20–25-years-old pine stands. The experimental plots were spread across northern, central and eastern Poland and affected by root-rot fungus (Heterobasidion annosum). Nine years after planting, the number of individual trees and shrub species, their height sum and average height were calculated for fenced artificial gaps (LSO) as well as non-fenced artificial gaps (LSN) and compared to natural gaps (LN) and non-disturbed neighboring stands (D). Results were calculated separately for the planted species (oak, lime and beech) but combined for all other species. The results indicate satisfactory restoration in all of the investigated plots except in Krynki, which is located in a relatively poor site. Significant differences appeared between height sum as well as average height of planted species in fenced compared to non-fenced gaps. Furthermore, in both, natural and artificial gaps, the species composition of the young generation was enriched with natural regeneration of pioneer species, mainly silver birch (Betula pendula), rowan (Sorbus aucuparia) and aspen (Populus tremula).
    Źródło:
    Leśne Prace Badawcze; 2019, 80, 4
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-14 z 14

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