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Wyszukujesz frazę "pine forest" wg kryterium: Temat


Wyświetlanie 1-13 z 13
Tytuł:
Analiza zależności struktury lasu od wieku na przykładzie drzewostanów sosnowych
Analysis of forest structure in relation to age – Scots pine case study
Autorzy:
Sławski, M.
Powiązania:
https://bibliotekanauki.pl/articles/973837.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany sosnowe
starodrzew
struktura drzewostanu
wiek drzewostanu
zmiany struktury drzewostanu
leśnictwo
forest structure
old−growth
pine forest
Opis:
Structure of pine forests develops with age and becomes more complex in older stands. Key attributes of old−growth forest structure include presence of huge trees, coarse woody debris, hollow trees, trees with fungi, clearings, two or more layered structure. In total, 26 attributes show positive correlation with age. This set can be used as base for old−growthness index. Cluster analysis divided forest stands into four groups with different level of maturity. Stands older than 160 years occurred fully developed. It seams that in sustainable forestry attributes of old−growth forests can be maintained as key elements for biodiversity.
Źródło:
Sylwan; 2011, 155, 01; 10-20
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wzrost różnorodności gatunkowej chrobotków jako efekt rębni zupełnej na ubogich siedliskach borowych
Increase of Cladonia species diversity as a consequence of clear-cutting in nutrient-poor forest sites
Autorzy:
Stefańska-Krzaczek, E.
Faltynowicz, W.
Powiązania:
https://bibliotekanauki.pl/articles/994072.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
siedliska borowe
siedliska oligotroficzne
rebnie zupelne
drzewostany sosnowe
chrobotek
Cladonia
wystepowanie
roznorodnosc gatunkowa
scots pine forest
managed forest
ground lichens
stand age classes
Opis:
Clear−cutting impacts site conditions seriously. However, in nutrient−poor sites the effects of stand removal can be minor than in nutrient−rich sites. The aim of this work was to assess whether the clear−cut can improve species diversity of ground Cladonia species, which decline has been observed in forest communities. In stands of different age classes (≤10, 11−20, 21−40, 41−60, 61−80, ≥81 years) in the Przymuszewo Forest District (northern Poland) ground Cladonia species and their cover were recorded on research plots (10×15 m). A total of 24 species were identified in the study area. There were more Cladonia species and they were more abundant in young stands (<20 years old) than in stands older than 60 years. Nine species are significantly more frequent and demonstrated high fidelity in young stands and only one was characteristic for old stands. Composition of Cladonia species depended primarily on stand age and subsequently on canopy or bryophyte cover. In nutrient−poor sites clear−cutting is favourable for Cladonia species diversity.
Źródło:
Sylwan; 2013, 157, 12; 929-936
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reakcja zgrupowań skoczogonków (Hexapoda: Collembola) na próby doskonalenia gospodarki zrębowej w Leśnym Kompleksie Promocyjnym „Lasy Mazurskie”
Response of springtail communities [Hexapoda: Collembola] to attempts of clearcut silviculture improvement in Forest Promotional Complex 'Lasy Mazurskie'
Autorzy:
Sławska, M.
Sławski, M.
Powiązania:
https://bibliotekanauki.pl/articles/1011762.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany sosnowe
bogactwo gatunkowe
zgrupowania zwierzat
Lasy Mazurskie
lesne kompleksy promocyjne
lesnictwo
bioindykatory
Collembola
bioindykacja
zrab zupelny
skoczogonki
gospodarka zrebowa
collembola
pine forest
clearcut improvement
site preparation
logging residuals
Opis:
Based on experiment established in pine forest of Spychowo Forest District, it was proved that clearcut caused negative changes in forest springtail communities. The logging of a whole stand reduced the number of species and their abundance. The decrease in springtail abundance depended on the method of site preparation prior to afforestation. The highest reduction was recorded in logged areas where stripes had been plowed using forest reversible plough. Regressive changes in communities were also observed on harvested sites prepared by an active plough and rotary cultivator. The attempts of clearcut improvement by addition of wood chips or leaving debris piles on logged areas were evaluated on the base of the response of springtail communities. In both cases, the number of species and abundance were higher comparing to clearcut areas without logging residuals. Also residual patches of old growth left on harvested sites had positive effect on Collembola communities. Species richness and abundance observed in those paches were higher than in control mature stands.
Źródło:
Sylwan; 2009, 153, 08; 534-547
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kształtowanie właściwości gleb w borze sosnowym z udziałem czeremchy amerykańskiej (Prunus serotina Ehrh.)
Soil properties in Scots pine forest invaded by Prunus serotina (Ehrh.)
Autorzy:
Halarewicz, A.
Pruchniewicz, D.
Kawałko, D.
Powiązania:
https://bibliotekanauki.pl/articles/988988.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drzewostany sosnowe
podszyt
gatunki inwazyjne
ekspansja roslin
czeremcha amerykanska
Prunus serotina
gleby lesne
zawartosc wegla organicznego
zawartosc azotu ogolnego
stosunek wegla do azotu
odczyn gleby
zmiany zawartosci
zmiennosc sezonowa
black cherry
scots pine forest
plant invasions
soil properties
Opis:
Black cherry (Prunus serotina) was planted in forests in Central Europe in the hope of producing valuable timber and after the first disappointments, in the hope of improving the soils of coniferous plantations. Nevertheless, an unequivocal evaluation of its effect on soil environment is still a controversial issue. The aim of this study was to determine a temporary fluctuation of selected soil properties in Scots pine forest dominated by black cherry. The research was carried out in Wołów Forest Division (SW Poland). Two Scots pine monocultures developed on podzol site with and without P. serotina in shrub layer, were selected for the study. Twelve research plots (10×10 m) were randomly selected on the sites. On each plot the cover of P. serotina in the shrub layer was evaluated and every three months, during single research year (November 2013 − November 2014) soil properties (total N, organic C, soil reaction) were determined in organic (O) and humus (A) horizons. Analysis of variance and PCA procedure demonstrate some significant relationships between P. serotina and soil properties in Scots pine forest. The presence of black cherry contributes to continued changes in the organic horizon expressed by increase in total N (range of average from 1.14 to 1.38%) and drop in C:N ratio (range of average from 22.86 to 25.73). Apart from the spring, increase in pH value in the organic (range of average from 4.03 to 4.58) and humus horizons (range of average from 3.59 to 4.04) was found on the site invaded by black cherry.
Źródło:
Sylwan; 2017, 161, 02; 149-154
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Struktura drzewostanów lipowo-sosnowych powstałych w wyniku półnaturalnej przebudowy starodrzewów sosnowych
Structure of lime-pine stands established as a result of seminatural reconstruction of old pine forests
Autorzy:
Jaszczak, R.
Małys, L.
Turski, M.
Hnat, M.
Majowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/1008329.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drzewostany sosnowe
starodrzew
przebudowa drzewostanow
przebudowa polnaturalna
drzewostany lipowo-sosnowe
struktura drzewostanu
drzewa lesne
sosna zwyczajna
Pinus sylvestris
lipa drobnolistna
Tilia cordata
wzrost roslin
pozycja biosocjalna drzew
struktura piersnic
struktura wysokosci
old pine forest
seminatural reconstruction
pine
lime
structure of breast height diameter
height structure
biosocial structure
Opis:
The paper presents results of the inventory carried out in 2008 in two−storeyed stands in which the upper storey consisted of pine trees and the lower one of lime trees. The structure of breast height diameter, height and the biosocial structure of the two species was discussed.
Źródło:
Sylwan; 2012, 156, 05; 360-368
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zależność grubości ściółki od wieku drzewostanów sosnowych rosnących na glebach porolnych i leśnych
The dependence of forest bed thickness on the age of pine stands growing on post-agricultural and forest soils
Autorzy:
Michalski, A.
Sałek, P.
Płatek, K.
Powiązania:
https://bibliotekanauki.pl/articles/1018331.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany sosnowe
gleby lesne
wiek drzewostanu
gleby porolne
grubosc
lesnictwo
sciolka
pine stand
forest bed
forest soils post−agricultural soils
Opis:
Forest bed layer developing in a tree stand plays a very important part in functioning of forest ecosystem and is of key importance in soil carbon accumulation. In two different study objects (Niedźwiady and Tuczno), 351 forest bed thickness measurements were taken in 117 pine stands of different age classes, separating them into those growing on forest lands (28 tree stands – 84 measurements) and those on post−agricultural ones (89 tree stands – 27 measurements). The above relationships were analysed, what showed a relation between the thickness of forest bed and the age of tree stand. Forest bed thickness increases together with tree stand age, both on forest and post−agricultural soils.
Źródło:
Sylwan; 2006, 150, 08; 20-25
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stan, warunki i problemy odnowienia naturalnego sosny w Puszczy Białowieskiej
The state, conditions and problems of pine natural regeneration in the Białowieża Forest
Autorzy:
Paluch, R.
Powiązania:
https://bibliotekanauki.pl/articles/1023646.pdf
Data publikacji:
2004
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany sosnowe
Pinus
sosna
lesnictwo
odnowienia naturalne
Puszcza Bialowieska
drzewa lesne
pine
natural regeneration
białowieża forest
damage
game
fencing
Opis:
The paper discusses conditions and problems concerning natural regeneration of pine in the „Puszcza Białowieska” Promotional Forest Complex. The studies on pine regeneration established from self−seeding were carried out on permanent experimental plots occupied by fresh and fresh mixed coniferous forests site types. A space filling index used in the experiment was to define space occupied by pine regeneration the so−called „height sum”. A significance test of differences in mean values between the abundance and height sum (t−Student's test) was used for each experimental variant within the forests site types. Natural regeneration in the Białowieża Forest occurs infrequently. It can be found mainly in loose pine stands growing in fresh coniferous forest site types. Pine naturally regenerates most successfully in fresh and fresh mixed coniferous forest site types, on fenced clear−cuts with a few reserved trees, with soil prepared in furrows and well−performed tending treatments, as well as in pine stands with stocking 0.4 providing that the same conditions are maintained. The primary condition for successful natural regeneration of pine in the Białowieża Forest is its protection against animals in the form of fencing.
Źródło:
Sylwan; 2004, 148, 11; 9-21
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Struktura zbiorowisk grzybów mykoryzowych po pożarze drzewostanu sosny zwyczajnej na siedlisku boru suchego
Structure of post-fire ectomycorrhizal communities of Scots pine stand in a dry coniferous forest habitat
Autorzy:
Hilszczańska, D.
Gil, W.
Olszowska, G.
Powiązania:
https://bibliotekanauki.pl/articles/980282.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
siedlisko boru suchego
drzewostany sosnowe
pozary lasow
tereny popozarowe
sosna zwyczajna
Pinus sylvestris
mikoryza
grzyby mikoryzowe
zbiorowiska grzybow
struktura zbiorowisk
roznorodnosc gatunkowa
forest fire
mycorrhiza
fungi
scots pine
coniferous forest habitat
Opis:
Ectomycorrhizal communities associated with Pinus sylvestris growing on dry coniferous forest habitat after the fire were studied. In order to investigate the fire effect on ectomycorrhizal fungi and changes of soil parameters in the upper (0−15 cm) soil layer three study plots were established: 1 – the control, 2 – fire zone left for artificial renewal (with the economic method of renewal) and 3 – fire zone left for natural renewal. The analysis of mycorrhizae revealed presence of eight mycorrhizal fungi on Scots pine roots and the value of Shannon−Wiener species diversity index H’ equaled to 1.76. The most abundant were mycorrhizae formed by Tomentella feruginea (31.7%) and Hebeloma crustuliniforme (23.3%). The fraction of Paxillus involutus and Rhizopogon sp. mycorrhizae was 16.7% and 13.0%, respectively. The lowest was the number of Thelephora terrestris mycorrhizae (only 1.7%). At the site 2, number of mycorrhizal fungi diminished to five and Shannon−Wiener species diversity index was also lower (1.37). The predominant were mycorrhizae of Cenococcum geophilum (26.7%) and P. involutus (21.7%), whilst the lowest were mycorrhizae of Suillus luteus (1.7%). Although at the third site the number of ectomycorrhizal fungi was the same as on the site 2, the dominance of Thelephora terrestris (66.7%) caused that Shannon−Wiener’s species diversity index was the lowest (1.05). Mycorrhizae of Paxillus involutus and Wilcoxina mikolae were characterised by similar abundance (13.3% and 11.7%, respectively). The lowest number of mycorrhizae was observed for Tomentella sp. (3.3%). Analysis of soil parameters showed an increase of pH on burnt sites in comparison to the control. The soil of burnt sites were also characterised by lower value of C and C/N ratio than the soil on the control treatment. The result showed that ubiquitous mycorrhizal fungi, such as T. terrestis, are able to persist on roots in changed soil environment with low content of nutritions.
Źródło:
Sylwan; 2019, 163, 01; 71-79
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sukcesja dębu w drzewostanach sosnowych na siedliskach borowych
The oak succession in the pine stand in the coniferous forest habitat
Autorzy:
Gniot, M.
Powiązania:
https://bibliotekanauki.pl/articles/1016532.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
sukcesja roslin
drzewostany sosnowe
siedliska borowe
Quercus
lesnictwo
dab
drzewa lesne
natural succesion
oak
pure pine stand
coniferous forest habitats
silviculture
transformation of the
stand
the complexity in the forest vegetation community
the biological diversity in the forest
forestry
headquater
balanced proecological forest management unit
the function of the forest
multipurpose
forest
the ecosystem of the forest
stand varied in species
biocenosis
the natural upgrowth
Opis:
Permanently balanced forest economy demands today a resignation from a constant model of the forest stand, which preferred the productive function of the forest, mostly without any consideration to its natural values formed by Mother Nature. Implanting on Polish grounds principles of multifunctional forest districts acknowledged as a breeding object of the whole forest ecosystem, giving in that way the forest economy a proecological dimension. Its a result from a general progress of civilization and achievements in forest science; reaching towards the needs and expectations from the society gaining a general acceptation from different environments. One of the fundamental elements implementing the ecosystem is to rebuild deformed and artificially barred forest phytocenosis. This refers especially to pure pine stands on habitats, in which trophoism potential explains breeding habitats species variety. A good help for the forester in this area can be a natural succesion of good, noble broad−leaved species like for example the oak. Succesion of this species takes on a special meaning in poor habitats, in which it without any special imposes enriches the biocenose with the whole positive outcome accompanying this process; it can also be a valuable clue to the potential fertility in the habitat and the complexity in the forest vegetation community. An important task is to lead the way for the oaks development from succesion to its fullest use as a natural presence in creating the future forest generation. The article below is devoted to this question describing the natural up growth of the oak in pine stands on the coniferous forest habitats in Forest District Różanna and the methods and results in which they are used for breeding.
Źródło:
Sylwan; 2007, 151, 05; 60-72
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Typ siedliskowy lasu a defoliacja koron drzew sosny zwyczajnej (Pinus sylvestris L.) wybranych klas biosocjalnych
Forest site type and crown defoliation of Scots pine trees [Pinus sylvestris L.] of selected biosocial classes
Autorzy:
Jaszczak, R.
Powiązania:
https://bibliotekanauki.pl/articles/1013504.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
defoliacja
drzewostany sosnowe
korony drzew
klasy Krafta
sosna zwyczajna
typy siedliskowe lasu
lesnictwo
Pinus sylvestris
drzewa lesne
scots pine
defoliation
forest site type
biosocial classes
Opis:
In the year 2003, tree crown defoliation of Scots pine (Pinus sylvestris L.) of the 3rd and 4th age class was assessed on 90 test plots of 25 main crop trees each. This paper presents the analysis and assessment of the significance of differences of the mean tree crown defoliation of different Kraft classes growing in the same site conditions and the mean tree crown defoliation of the same Kraft classes growing in different site conditions (=0.05). The following three forest site types were taken into consideration: fresh coniferous (Bśw), mixed fresh coniferous (BMśw) and fresh broad−leaved forest site types (LMśw).
Źródło:
Sylwan; 2008, 152, 03; 22-26
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:
Zdrowotność wybranych drzewostanów sosnowych Nadleśnictwa Szczecinek
Health condition of selected Scots pine stands in Szczecinek Forest District
Autorzy:
Blajer, K.
Beker, C.
Powiązania:
https://bibliotekanauki.pl/articles/791625.pdf
Data publikacji:
2015
Wydawca:
Wyższa Szkoła Zarządzania Środowiskiem w Tucholi
Tematy:
lesnictwo
Nadlesnictwo Szczecinek
drzewostany sosnowe
zdrowotnosc roslin
sosna zwyczajna
Pinus sylvestris
grunty porolne
stan zdrowotny drzew
forestry
tree
tree stand
health condition
plant health
Scotch pine
stand
Szczecinek Forest District
former agricultural land
Opis:
Celem pracy było określenie zdrowotności wybranych drzewostanów sosnowych Nadleśnictwa Szczecinek. Obserwacje zostały przeprowadzone w 2014r. na 15 stałych powierzchniach badawczych, zlokalizowanych na dwóch typach siedliskowych lasu (BMśw oraz LMśw) na gruntach leśnych oraz porolnych, reprezentujących klasy wieku od II do VI. Ocena stopnia uszkodzenia koron drzew została przeprowadzona na podstawie metody bioindykacyjnej opierającej się na trzech kryteriach: defoliacji, liczby roczników igieł oraz stopniu prześwietlenia korony. Analiza stanu zdrowotnego wykazała, iż 72,2% drzewostanów objętych badaniami było uszkodzonych w stopniu słabym, gdyż zostały zakwalifikowane do 0 i I stopnia uszkodzeń. Silnego oraz całkowitego stopnia uszkodzeń nie wykazano. Średni ubytek aparatu asymilacyjnego wyniósł 19,56%. Drzewostany wyrosłe na gruntach leśnych charakteryzowały się niższą średnią defoliacją korony drzew (18,19%), natomiast ubytek aparatu asymilacyjnego na gruntach uprzednio użytkowanych rolniczo wyniósł 20,82%.
The aim of the study was to determine the health condition of selected Scots pine stands in Szczecinek forest district. Observations were carried out in 2014 on 15 permanent research plots, located on two types of forest habitat (BMśw and LMśw) on forest land and former farmlands, representing the age class II to VI. The evaluation of the damage to the crowns has been carried out on the basis of the bioindication method, which is based on three criteria: defoliation, the number of needle age–groups and type of tree crown attenuation. The analysis of health condition showed that 72.2% of the researched stands were damaged to the lesser extent, s they were qualified to the 0 and I degree of damage. The strong and total degree of damage has not been found. The average loss of assimilation apparatus was 19.56%. The stands growing on the forest land are characterized by a lower average defoliation of tree crowns (18.19%), while the loss of assimilation apparatus on land previously used for agriculture amounted to 20.82%.
Źródło:
Zarządzanie Ochroną Przyrody w Lasach; 2015, 09
2081-1438
2391-4106
Pojawia się w:
Zarządzanie Ochroną Przyrody w Lasach
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring cetyńców (Tomicus sp.) w różnych typach siedliskowych lasu
Monitoring of pine−shoot beetles (Tomicus sp.) in different forest habitat types
Autorzy:
Lesniak, A.
Powiązania:
https://bibliotekanauki.pl/articles/973063.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
Tomicus piniperda
bonitacja siedliska
cetyniec mniejszy
lesnictwo
drzewostany sosnowe
klasy wieku
owady
Tomicus minor
monitoring
typy siedliskowe lasu
szkodniki roślin
entomologia leśna
cytniec większy
pine−shoot beetle (tomicus sp.)
forest habitat type
age class
bonitet class
Opis:
The paper synthesises results from the study on pine−shoot beetles occurring in 10 types of forest habitat in seven forest districts of central Poland. The paper provides assessment of three methods for collecting insect−induced needle drop, as well as its quantities in age and bonitet classes in pure and mixed pine stands.
Źródło:
Sylwan; 2003, 147, 11; 61-67
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-13 z 13

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