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    Tytuł:
    Wpływ wykonania szlaków operacyjnych na wartość hodowlaną jednowiekowych drzewostanów sosnowych przy różnych metodach trzebieży
    The influence of the establishment of skid trails on the silvicultural quality of even-aged Scots pine stands in different thinning treatments
    Autorzy:
    Zachara, Tadeusz
    Powiązania:
    https://bibliotekanauki.pl/articles/29519606.pdf
    Data publikacji:
    2023-11-23
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    silviculture
    Scots pine
    future crop trees
    tending cuts
    skid trails
    hodowla lasu
    sosna zwyczajna
    drzewa dorodne
    cięcia pielęgnacyjne
    szlaki operacyjne
    Opis:
    The study was conducted on a permanent experimental plot established in 1965 in the Kozienice Forest District to investigate the effects of spacing on the growth of Scots pine. Since 1999, the plot has also been used to study the effects of thinning - using a randomized block design. In this study, seven treatments (four blocks) out of a total of nine treatments present on the plot were included. The following treatments were tested: (1) moderate selective thinning TU1 and TU2 (focusing on 500 future crop trees per hectare evenly distributed on the plot), (2) group thinning TG1 and TG2 (focusing on the same number of future crop trees not evenly distributed on the plot), (3) heavy thinning TS1 and TS2 (focusing on 350 future crop trees per hectare), and (4) control plot (K, without thinning). During the last thinning, a network of skid trail s (each 17-18 m) was established in the study plot to enable the use of a harvester. The aim of the study was to evaluate the influence of the establishment of skid trails on the loss of future crop trees in different treatments. All trees removed in the period 2015-2020 (including natural mortality and mortality caused by the establishment of skid trails) were counted and their basal area calculated. ANOVA was performed to investigate the influence of thinning treatments on natural and artificial loss of trees between successive thinnings. The largest total number and basal area of trees removed was found in control plot K. The greatest loss of future crop trees was observed in the plots treated with group thinning TG1. In plots with a lower number of future crop trees (TS1), the loss was zero. In summary, the establishment of skid trails in heavily thinned Scots pine stands with wide spacing is acceptable. The skid trails should be established before the selection of future crop trees.
    Źródło:
    Leśne Prace Badawcze; 2023, 83; 51-56
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Porównanie metod oceny zdrowotności upraw sosnowych w odnowieniach
    Comparing methods for assessing the health of regeneration in Scots pine culture
    Autorzy:
    Sierota, Z.
    Malecka, M.
    Damszel, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2142728.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    phytopathological monitoring
    Scots pine cultures
    field assessment
    health status
    pathogens
    monitoring fitopatologiczny
    uprawy sosny zwyczajnej
    ocena zagrożenia chorobowego
    stan zdrowotny
    patogeny
    Opis:
    This study’s aim was to describe the health condition of Scots pine cultures of up to 10 years old using and comparing various field assessment methods. Since forest districts report on the health of stands annually, we assumed that for a proper health analysis it is necessary to develop a simple and yet reliable assessment method that allows for determining the share of fungal pathogen infection in the stand (both foliar and root pathogens) and their differentiation from symptoms of abiotic factors such as drought. Six different methods of health assessment were tested in selected Forest Districts across Poland. We found that the most reliable assessment of the health condition of young stands is obtained with the surface method “MF” (phytopathological monitoring method) and the linear “Z” method, which uses transects of 30 meters in three rows in the shape of the letter Z.
    Źródło:
    Leśne Prace Badawcze; 2020, 81, 2; 51-64
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ żywicowania na przyrost radialny sosny zwyczajnej (Pinus sylvestris L.) na przykładzie drzewostanu w Nadleśnictwie Lidzbark
    Effect of resin-tapping on the radial increment of Scots pine (Pinus sylvestris L.) - case study of a stand from Lidzbark Forest District
    Autorzy:
    Magnuszewski, M.
    Tomusiak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1318415.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    drzewa lesne
    dendrochronologia
    sosna zwyczajna
    Pinus sylvestris
    przyrost drzew
    przyrosty radialne
    zywicowanie
    Nadlesnictwo Lidzbark
    Scots pine
    tree rings
    resin-tapping
    dendrochronology
    Opis:
    The study makes an attempt to evaluate the effect of resin-tapping on the radial increment of Scots pine (Pinus sylvestris L.). Increment cores were taken from two groups of trees: resin-tapped trees and normal trees growing in a 148–year-old pine stand in the Lidzbark Forest District. The cores were taken with the Pressler increment borer from two heights on the tree trunk: 1.30 m and 3.30 m. Using dendrochronological methods, real chronologies were built for each of the four analysed groups of cores. The value and variability of increments for each group were investigated in 20 and 40 year time periods, before and after the start of resin-tapping. In next step, the chronologies were compared and their coefficients of conformity were calculated. As a result, we can state that the radial increments were larger are at 1.3 m height after resin-tapping than before resin-tapping. There was also significant effect of resintapping on radial growth at the height 3.3 m, above the resin-tapping face.
    Źródło:
    Leśne Prace Badawcze; 2013, 74, 3; 273-280
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zbiorowiska grzybów w rozkładającym się drewnie dębu i sosny
    Communities of fungi in decomposed wood of oak and pine
    Autorzy:
    Kwaśna, H.
    Mazur, A.
    Łabędzki, A.
    Kuźmiński, R.
    Łakomy, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1294810.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    fitopatologia lesna
    dab
    Quercus
    sosna
    Pinus
    drewno martwe
    rozklad drewna
    grzyby
    zbiorowiska grzybow
    communities of fungi
    oak
    Scots pine
    succession
    wood decomposition
    Opis:
    The abundance and diversity of wood decomposing fungi were investigated by isolating and cultivating filamentous fungi from wood and by detection of fruit bodies of ascomycetous and basidiomycetous fungi. The objective was to study the impact of forest management on fungi in 100-year-old oak and 87-year-old Scots pine forests in Northern Poland. Fungi were found on coarse woody debris of decayed stumps and fallen logs, boughs and branches in each of the three (managed and unmanaged) examined stands. In total, 226 species of Oomycota and fungi were recorded. Oak wood was colonized by one species of Oomycota and 141 species of fungi including Zygomycota (19 species), Ascomycota (103 species) and Basidiomycota (19 species). Scots pine wood was also colonized by one species of Oomycota and 138 species of fungi including Zygomycota (19 species), Ascomycota (90 species) and Basidiomycota (29 species). In the first, second and third stages of decomposition, the oak wood was colonized by 101, 89 and 56 species of fungi respectively and pine wood was colonized by 82, 103 and 47 species respectively. Eighty three of the observed species (37%) occurred on both types of wood, while the other species displayed nutritional preferences. A decrease in the number of species with advancing decay indicates the necessity for a continuous supply of dead wood to the forest ecosystem. This supply would secure the continuity of fauna and flora and guarantee a stable forest development. The nutritional and ecological preferences of many fungal species furthermore indicate the necessity of supplying the forests with wood of different species. In commercially managed forests the results obtained here will aid in: (i) the development of strategies for effective dead wood management in the context of forest productivity and future wood stock growth, as well as (ii) finding a compromise between forest management requirements and environmental protection.
    Źródło:
    Leśne Prace Badawcze; 2016, 77, 3
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ odłogowania i dodatku trocin iglastych do gleby porolnej na jej właściwości chemiczne i zbiorowisko grzybów ektomykoryzowych 15-letniej sosny zwyczajnej
    Influence of resting and pine sawdust application on chemical changes in post-agricultural soil and the ectomycorrhizal community of growing Scots pine saplings
    Autorzy:
    Małecka, M.
    Hilszczańska, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1311503.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    grunty porolne
    odlogowanie
    dodatki do gleb
    trociny iglaste
    gleby
    wlasciwosci chemiczne
    grzyby ektomikoryzowe
    zalesianie
    uprawy lesne
    sosna zwyczajna
    Pinus sylvestris
    Scots pine
    ectomycorrhizal fungi
    agricultural lands
    pine sawdust
    Opis:
    Changes in chemical compounds and in ectomycorrhizal structure were determined for Scots pine growing on post agricultural soil lying fallow for 3, 6 and 15 years, after amendment with pine sawdust. Soil without any amendments was used as the control treatment. Comparing the ectomycorrhizal structure 15 years after the application of pine sawdust revealed no significant differences in abundance or species richness between soil with and without organic enrichment. The results showed that the ectomycorrhizal status depends on soil conditions (soil pH, nitrogen content), which remain unaffected by saw dust application. In all treatments, the most frequently occurring ectomycorrhizae genera were Dermocybe, Hebeloma, Suillus, Tomentella and Tricholoma. Two species (Paxillus involutus, Amanita muscaria) were specific to the control plots that lay fallow for 15 years.
    Źródło:
    Leśne Prace Badawcze; 2015, 76, 3; 265-272
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ suszy na pobór wody przez sosnę zwyczajną (Pinus sylvestris L.) o różnej pozycji w drzewostanie
    The influence of drought on the water uptake by Scots pines (Pinus sylvestris L.) at different positions in the tree stand
    Autorzy:
    Boczon, A.
    Wróbel, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1311747.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    drzewa lesne
    pozycja biosocjalna drzew
    sosna zwyczajna
    Pinus sylvestris
    pobieranie wody
    gleby lesne
    wilgotnosc gleby
    susza
    Scots pine
    soil moisture
    pF curve
    water uptake
    sap flow
    TDP
    drought
    Opis:
    Periodically occurring drought is typical for the climate of Poland. In habitats supplied exclusively with rain water, tree stands are frequently exposed to the negative effects of water deficit in the soil. The aim of this study was to examine the water uptake and consumption of two individual Scots pine trees under drought conditions. The trees were located at different positions within the stand and at the time of study were over 150 years old. Soil moisture, availability of soil water and the quantity of water uptake by the individual trees were examined by measuring the water velocity inside the trunks (Thermal Dissipation Probe method). Two periods of intense drought occurred in the summer 2006 only a few days apart. Before the drought, pine No. 1 (dominant) took up 66.7 dm3 water per day and pine No. 2 (co-dominant) took up 52.3 dm3 per day. The observed responses of the examined pines to the first period of drought were similar: the low soil water content resulted in a suppression of water uptake in both trees. After the end of the drought period however, the recovery responses of the two trees were different. Pine No. 1 resumed water uptake at values similar to those before the drought. Pine No. 2 on the other hand did not resume water uptake. We conclude that in case of this second tree the vegetative season possibly ended already at the end of June.
    Źródło:
    Leśne Prace Badawcze; 2015, 76, 4; 370-376
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ więźby sadzenia na wzrost i przeżywalność sosny zwyczajnej w okresie około 40 lat od założenia uprawy w zróżnicowanych warunkach siedliskowych
    The influence of plant spacing on growth and survival of Scots pine in various habitats during a 40 year period since stand establishment
    Autorzy:
    Gil, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/1317297.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    uprawy lesne
    drzewa lesne
    wiezba drzew
    wiezba poczatkowa
    sosna zwyczajna
    Pinus sylvestris
    wzrost roslin
    przezywalnosc
    warunki siedliskowe
    Scots pine
    plant spacing
    initial density
    survival of trees
    trees’ growth
    habitat conditions
    Opis:
    The aim of this research was to characterise the influence of plant spacing on the survival and growth of pines in dry and fresh coniferous forest habitats after almost 40 years since stand establishment. In this study, we compared seven types of spacing, including square, rectangular and triangular configurations, with initial densities ranging from 6944 units/ha to 15 625 units/ha. The research covered two sites where no tending interventions of selective character were performed throughout the growth period. We found that habitat conditions had an influence on tree survival as well as growth in thickness and height in the pine forest stands. In the less fertile habitat, where competition between trees was less intense, about 1,5 to 2 times more trees survived than in the more fertile habitat. Pines growing in the fresh coniferous forest were taller and had substantially larger diameter breast heights (dbh) in comparison to pines of the dry coniferous forest. Additionally, habitat conditions had an influence on the spacing effect correctness of the analysed features. In the poorer habitat this influence was stronger, which showed in a greater differentiation of the analysed parameters as compared to the more fertile habitat. Average dbh values of all trees on the Płock surface increased with decreasing initial density and ranged from 8,24 cm in variant A (15 625 units/ha) to 9,79 cm in variant C (6944 units/ha). On the Łąck surface, trees growing at a lower density (variants C and E) were significantly thicker than trees growing at densities between10 000 units/ha and 15 625 units/ha (spacing variants A, B, F, G). Furthermore, our results showed a significant influence of habitat conditions and plant spacing on the thickness of pines belonging to the 1st biosocial class. Moreover, we found a positive influence of triangular-shaped spacing on the trees' thickness increment in the fresh coniferous forest, which confirms reports from other authors. Hence, we can deduce that triangular spacing enables trees to make better use of their surrounding space which positively impacts on their growth parameters. Based on these results, we can conclude that, in pine forests, there is a significant influence of habitat conditions on tree survival and growth in thickness and height. This study also showed significant differences between the types of plant spacing and their effect on pine shafts in the II age class. However, a relationship between height growth rate and initial density was not observed. In both of the investigated habitats, the highest trees were observed at densities around 11 500 units/ha with triangular spacing enhancing this effect.
    Źródło:
    Leśne Prace Badawcze; 2014, 75, 2; 117-125
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sygnał klimatyczny w przyroście radialnym wybranych iglastych gatunków drzew w Leśnym Zakładzie Doświadczalnym Rogów
    Climate signal in the radial growth of selected coniferous species from the Forest Experimental Station in Rogow
    Autorzy:
    Bijak, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1339908.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    dendroklimatologia
    drzewa lesne
    jodla pospolita
    Abies alba
    modrzew europejski
    Larix decidua
    sosna zwyczajna
    Pinus sylvestris
    daglezja zielona
    Pseudotsuga menziesii
    przyrosty radialne
    czynniki klimatyczne
    dendroclimatology
    Scots pine
    silver fir
    European larch
    Douglas fir
    central Poland
    Opis:
    I present dendroclimatological analysis of coniferous tree species growing under the same environmental conditions in the WULS-SGGW Forest Experimental Station in Rogów (51° 49' N, 19° 53' E, ca. 190 m a.s.l). The study focuses on silver fir, European larch, Scots pine and Douglas fir. For each species, tree-ring width and annual sensitivity chronologies were developed for the period 1931–2010. Analysed species show considerable similarity of their radial increment course (GLK up to 67%, the t-value of 3,5–9,5). The relationship obtained for of the influence of climate conditions on radial growth of these species is typical of the relationships reported from other locations in lowland Poland. Late winter and early spring temperature, especially during February-March, is the main factor affecting tree-ring formation. The general relationship demonstrates that this seasonal thermal limitation operates at an inter-regional and interspecific level in determining the growth of coniferous tree species in Poland. Whereas, the dependence of these species on precipitation is much less significant.
    Źródło:
    Leśne Prace Badawcze; 2013, 74, 2; 101-110
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ metod trzebieży na wskaźniki przewagi konkurencyjnej drzew dorodnych w jednowiekowych drzewostanach sosnowych II i III klasy wieku
    The influence of different thinning methods on dominance coefficients of future crop trees in even-aged Scots pine stands
    Autorzy:
    Zachara, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1316012.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    drzewostany sosnowe
    drzewostany jednowiekowe
    klasy wieku
    drzewostany II klasy wieku
    drzewostany III klasy wieku
    trzebieze
    sosna zwyczajna
    Pinus sylvestris
    drzewa dorodne
    cechy biometryczne
    wskazniki przewagi konkurencyjnej
    Scots pine
    permanent experimental plots
    dominance coefficients
    thinning intensity
    Opis:
    The research aim was to evaluate the influence of different thinning methods on future crop tree growth. Investigations were conducted on permanent Scots-pine experimental plots, established in 1960s and 1970s in Kozienice, Łąck, Parciaki and Janów Lubelski Forest Districts. To assess the response to thinning of future crop trees, their dominance coefficients were used. These are defined as quotients for each given future crop tree diameter and average stand diameter (WP1), the average dominant layer diameter (WP2) and the average diameter of 100 thickest trees per hectare (WP3). The difference between each coefficient value at the beginning and at the end of the measurement period was used as a measure of the thinning effect. On Kozienice, Łąck and Parciaki plots the differences between treatments were significant, especially in the period after first thinning. The increase of WP3 coefficient occurred in a case of strong thinning – TS1 and TS2. On plot Parciaki also the moderate thinning TU1 and TU2 had a significant influence on change of this coefficient. On plot Janów Lubelski the influence of treatment has not been stated in the first 5-year period but in the next one. Analyses of changes in the dominance coefficients confirmed the hypothesis that the WP3 coefficient is very useful as it is the most stable indicator of future crop-tree position in a stand. On Kozienice, Łąck and Parciaki plots the significant differences between treatments were stated, especially in the period after first thinning. The influence of thinning treatment on the plot Janów Lubelski was not considered for the first 5-year period but in the next one. All reactions to thinning were slower on this plot, possibly because of the relatively poor site conditions. This was a longterm effect. The results obtained suggest that very intense thinning of Scots pine stands should only be implemented under a restricted set of conditions – in healthy, not neglected, forest stands. Classical moderately-selective thinning is preferable to intense thinning and is the most convenient option for pine stands.
    Źródło:
    Leśne Prace Badawcze; 2014, 75, 1; 31-45
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zmienność taborskiej sosny zwyczajnej (Pinus sylvestris L.) z Nadleśnictwa Miłomłyn wyrażona w analizie cech morfologii igieł oraz polimorfizmie mikrosatelitarnego DNA
    Variability of Scots pine (Pinus sylvestris L.) called Taborz pine (Forest District Milomlyn) expressed in analysis of morphology of needle traits and polymorphism of microsatellite DNA
    Autorzy:
    Lesiczka, P.
    Pawlaczyk, E.M.
    Łabiszak, B.
    Urbaniak, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1292493.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    Nadlesnictwo Milomlyn
    drzewa lesne
    sosna zwyczajna
    Pinus sylvestris
    zmiennosc
    sosna taborska
    igly sosny
    cechy morfologiczne
    DNA mikrosatelitarny
    polimorfizm genetyczny
    markery molekularne
    genom jadrowy
    genom chloroplastowy
    Scots pine from Tabórz
    needle morphology
    nuclear (nrSSR) and chloroplast (cpSSR) microsatellite DNA
    genetic
    variation
    Opis:
    Scots pine (Pinus sylvestris L.) is one of the most widespread forest trees in the world, ranging from southern Mediterranean mountains to eastern Siberia. 30 trees of Scots pine from the Miłomłyn Forest District were analyzed in terms of 7 nuclear and 8 chloroplast microsatellite DNA loci as well as 7 morphological needle traits. Nuclear microsatellites (Simple Sequence Repeats) have proved to be useful in studying phylogeographic and gene flow patterns in conifers and are being used to infer the demographic history of tree species. A population’s genetic diversity, in fact, represents an important criterion which could be applied in planning future forest management and breeding. Additionally, many elements of Scots pine morphology, including needle traits, are subject to environmental modification. However, the adaptability of those traits remains, to some extent, under genetic control. The trees we investigated here are called Tabórz pine located in the northeast of Poland. This population is described as one of the best in Poland and even in Europe regarding bio mass production, ductility and wood quality. The aim of the study was to determine variation and genetic structure within this population. An analysis of phenotypic differentiation showed that the traits which differed the most between individuals were needle length, the number of serrations per 2 mm of needle length along the right edge and the number of stomatal rows on the convex side of the needles. In Tabórz pine, we detected 30 different genotypes with 87 alleles as well as 28 haplotypes with 30 alleles. We also revealed a slight excess of homozygotes, but the population is still in Hardy-Weinberg equilibrium. The Scots pine population from Tabórz furthermore showed a higher level of genetic diversity compared to stands from other Polish and European regions. This diversity may be the main factor impacting on the population’s wood quality and its breeding value.
    Źródło:
    Leśne Prace Badawcze; 2017, 78, 2
    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
    Tytuł:
    Symulacja dynamiki drzewostanów sosnowych polskiej i ukraińskiej części Roztocza w warunkach zmian klimatu
    Simulation of Scots pine stand dynamics under climate change conditions in the Polish and Ukrainian parts of Roztocze
    Autorzy:
    Kozak, I.
    Czekajska, P.
    Kozak, H.
    Stępień, A.
    Kociuba, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1318626.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    Roztocze [geogr.]
    Polska
    Ukraina
    drzewostany sosnowe
    dynamika drzewostanu
    gatunki lasotworcze
    sosna zwyczajna
    Pinus sylvestris
    gatunki domieszkowe
    buk zwyczajny
    Fagus sylvatica
    jodla pospolita
    Abies alba
    swierk pospolity
    Picea abies
    grab pospolity
    Carpinus betulus
    czynniki klimatyczne
    suma temperatur efektywnych
    roczna suma opadow
    zmiany klimatyczne
    symulacja komputerowa
    modele symulacyjne
    model FORKOME
    Scots pine
    beech
    fir
    spruce
    FORKOME computer model
    Roztocze
    prognosis
    Opis:
    The study was conducted in the Polish (Roztoczanski National Park) and Ukrainian (Rava-Rus'ka Landscape Reserve and Yavorivskyi National Park) parts of the Roztocze region. In each of these locations three research areas were established in Scots pine (Pinus sylvestris L.) stands under similar ecological conditions. The purpose of this study was to carry out a survey of possible scenarios for pine stand dynamics in the Polish and Ukrainian parts of Roztocze using the FORKOME model. A control scenario was compared with four other climate change scenarios (warm dry and warm humid; cold dry and cold humid) for a period of covering the next 100 years. Using the control scenario, the FORKOME model predicted that for the next 100 years pine stands will dominate in terms of biomass and number of trees. The warm-dry and warm-humid climate scenarios resulted in slightly reduced biomass of pine stands. However pine would still maintain its dominance, although with a noticeable increase in beech and fir biomass. Nevertheless, in term of the number of trees during the second half of the simulation, it is beech and fir that dominate stand 1 in Roztoczanski National Park. Under the climate cooling scenario (cold dry and cold humid), the biomass of pine and spruce would increase during the next 100 years. Pine trees that would dominate in terms of their numbers, although the number of spruce individuals also tends to increase. The results presented in the paper indicate that the FORKOME model is very useful when investigating different climate changes scenarios in the Roztocze region.
    Źródło:
    Leśne Prace Badawcze; 2013, 74, 3; 215-226
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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