Temat: siedlisko lasu swiezego mieszanego - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Przestrzenne zróżnicowanie drzewostanów daglezjowych (Pseudotsuga menziesii (Mirbel) Franco) odnowionych sadzeniem na siedliskach BMśw i LMśw
Spatial diversity of Douglas fir [Pseudotsuga menziesii [Mirbel] Franco] stands planted on fresh mixed coniferous and fresh mixed broadleaved sites
Autorzy:: Szmyt, J.
Korzeniewicz, R.
Powiązania:: https://bibliotekanauki.pl/articles/1009028.pdf
Data publikacji:: 2010
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
drzewostany daglezjowe
zroznicowanie przestrzenne
drzewa lesne
daglezja zielona
Pseudotsuga menziesii
struktura przestrzenna
siedlisko boru mieszanego swiezego
siedlisko lasu swiezego mieszanego
spatial structure
structural indices
artificial stands
douglas fir
Opis:: The paper describes the spatial diversity of 30−year old Douglas fir stands established by planting on fresh mixed coniferous and fresh mixed broadleaved sites. Analysis was carried out with reference to the horizontal structure (type of tree distribution over an area) and the spatial diversity of living trees size (dbh and height). Easily measurable structural indices as Clark−Evan aggregation index, contagion index and the height and diameter differentiation indices were used.
Źródło:: Sylwan; 2010, 154, 11; 791-800
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Przyrost radialny jodły pospolitej (Abies alba Mill.) w Puszczy Iłżeckiej
Diameter increment of silver fir (Abies alba Mill.) in the Ilzecka Forest
Autorzy:: Bis, R.
Dobrowolska, D.
Powiązania:: https://bibliotekanauki.pl/articles/45450.pdf
Data publikacji:: 2012
Wydawca:: Instytut Badawczy Leśnictwa
Tematy:: lesnictwo
drzewa lesne
jodla pospolita
Abies alba
przyrosty radialne
czynniki srodowiska
czynniki klimatyczne
siedliska lesne
Puszcza Ilzecka
siedlisko lasu swiezego
siedlisko lasu mieszanego swiezego
Źródło:: Leśne Prace Badawcze; 2012, 73, 3
1732-9442
2082-8926
Pojawia się w:: Leśne Prace Badawcze
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Cechy biometryczne podrostów dębowych pochodzenia naturalnego rosnących pod osłoną drzewostanów sosnowych
Biometric features of oak advance-growth growing under Scots pine canopy
Autorzy:: Żybura, H.
Pewniak, B.
Powiązania:: https://bibliotekanauki.pl/articles/989077.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
hodowla lasu
drzewostany sosnowe
sosna zwyczajna
Pinus sylvestris
siedlisko boru mieszanego swiezego
siedlisko lasu mieszanego swiezego
podrost
dab
Quercus
cechy biometryczne
odnowienia podokapowe
scots pine
oak
biometric features
canopy
Opis:: The objectives of the study was to investigate and compare the characteristics of oak advance−growth of various age present under Scots pine canopy and growing on the mesic mixed coniferous (BMśw) or mesic mixed deciduous (LMśw) forest site types. The study was conducted in Kolumna Forest District (central Poland) in 21 Scots pine stands ca. 90 years of age, and with a well−developed oak advance−growth. The study sites were divided into 4 groups depending on the age of oak: 15, 20, 25 or 30−years−old. The empirical data concerned trees frequency (per unit area), average breast height diameter, height and basal area. The dependence of these characteristics on type of the main stand and advance−growth was then determined by statistical analysis. Above all, an attempt was made to determine the impact of forest site type conditions on the characteristics of oaks advance−growth. Results show that oaks are present at the density that makes the possibility of the advance−growth development into the stand real. Trees in the upper storey are found to exert a great influence on the silvicultural value of advance−growth trees. In particular, the density of trees in the main stand is a feature found to affect greatly the layer of oak advance−growth.
Źródło:: Sylwan; 2017, 161, 06; 476-484
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Biochemiczna aktywność gleb różnych siedlisk leśnych
Biochemical soil activity of different forest site
Autorzy:: Olszowska, G.
Powiązania:: https://bibliotekanauki.pl/articles/989600.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
gleboznawstwo lesne
siedliska lesne
siedlisko boru mieszanego swiezego
siedlisko lasu mieszanego swiezego
gleby lesne
aktywnosc biochemiczna
aktywnosc enzymatyczna
wlasciwosci chemiczne
forest site type
enzymatic activity
soil chemistry
Opis:: The aim of the study was to determine the enzymatic activity and chemical properties of soil in selected stands of different age classes on two forest site types: fresh mixed coniferous forest (BMśw) and fresh mixed deciduous forest (LMśw). The investigations were carried out in Nowe Ramuki Forest District in 2013−2015 located in the central part of Warmińsko−Mazurskie administration district Poland. In organic and humus horizons following parameters were described: acidity in 1M KCL, content of nitrogen, carbon and exchangeable alkaline cations (Na+, K+, Ca2+ and Mg2+) as well as hydrolytic acidity. Enzymatic investigation included the measurements of urease, asparaginase, acid phosphatase and dehydrogenase activity. Content of C and N, sum of base cations (S), hydrolytic acidity (Hh), cation exchange capacity (PWK), base saturation percentage were significantly higher in organic than humus horizon. Enzymatic activity was connected with the content of organic matter, what resulted in higher activity in organic than humus horizon independently of site type and stand age. The concentration of organic carbon (C), nitrogen, C/N ratio, hydrolytic acidity and cation exchange capacity was higher on BMśw than LMśw site type. Activity of urease, acid phosphatase and dehydrogenase was lower in soils of LMśw than BMśw site type. Lower enzymatic activity may suggest lower intensity of decaying process of organic matter in these soils. Significant correlations between enzymes and chemical soil parameters were found. Significant correlation between enzymatic activity and soil chemical properties shows that biochemical parameters can be used as indexes of their productivity. Investigation of biochemical reaction intensity can be complement to soil chemical studies usually used in forestry.
Źródło:: Sylwan; 2016, 160, 08; 666-673
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Cechy jakościowe podrostów dębowych rosnących pod osłoną drzewostanów sosnowych
Quality traits of undergrowth oaks beneath the canopy of Scots pine stands
Autorzy:: Aleksandrowicz-Trzcińska, M.
Pewniak, B.
Żybura, H.
Powiązania:: https://bibliotekanauki.pl/articles/985772.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
hodowla lasu
drzewostany sosnowe
siedlisko boru mieszanego
siedlisko lasu mieszanego swiezego
podrost
dab
Quercus
cechy jakosciowe
odnowienia podokapowe
trunk quality
crown quality
vitality
development trend
trees with future potential
Opis:: Scots pine stands in central Poland are now seen to be experiencing dynamic development of lower layers formed by oaks. The under−canopy natural renewal taking place in this way is sometimes characterised by good silvicultural quality, and could therefore be taken advantage of in the process of stand conversion. The study assess the quality of existing undergrowth layers of oak present in older stands of Scots pine, most especially from the point of view of their suitability for subjection to further silvicultural measures. The research material was collected in 10 objects where site type was classified as mesic mixed coniferous site type (BMśw) as well as in 11 ones with mesic mixed broadleaved forest (LMśw) site type. In each site type, 2 or 3 stands were selected to typify undergrowth layers aged 15, 20, 25 or 30 years. Assessment of oak undergrowth trees was made on the basis of 4−point scale in case of trunk or crown quality and vitality, and on a 3−point scale when vitality and the development trend were concerned. Next we selected the trees with future potential characterised by the highest quality from the point of view of all studied traits. A further determination concerned the influence on the traits in these best trees of the oak understorey that was exerted by biometric features of both the sheltering Scots pine stand and the under−growth itself. The studied undergrowth oaks are of either very good or good quality. Around 90% of these young trees could be assigned to 1st or 2nd quality class with the respect of all of analysed traits. Furthermore, fertility of the site type was found not to have any influence on the quality of the young oaks. However, where the number of trees identified as having future potential is concerned, influence was demonstrated for density of trees in both stand and the undergrowth layer, as well as their height, breast−height diameter and basal area. Oaks forming the lower layer beneath Scots pine stands are thus characterised by good quality and growth trends, to the extent that this suggests allowing further growth to take place, with inclusion within the main stand or next generation.
Źródło:: Sylwan; 2018, 162, 04; 267-276
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Wpływ warunków siedliskowych, wielkości gniazda oraz położenia w jego obrębie na wysokość 6- i 10-letnich dębów szypułkowych (Quercus robur L.)
The influence of site conditions, opening size and location within a gap on height of 6- and 10-year-old pedunculate oaks (Quercus robur L.)
Autorzy:: Bolibok, L.
Szeligowski, H.
Powiązania:: https://bibliotekanauki.pl/articles/974048.pdf
Data publikacji:: 2011
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: Quercus
odnowienia lasu
siedlisko boru mieszanego swiezego
siedlisko lasu mieszanego swiezego
warunki siedliskowe
dąb
leśnictwo
rębnie zupełne gniazdowe
wielkość gniazd
wzrost roślin
patch cutting
artificial gap
pedunculate oak
gap size
site type
spatial height variability
Opis:: The influence of artificial elliptical gaps (size 15 and 20 are) on height of young (6 and 10 year old) planted pedunculate oaks was investigated on fresh mixed−coniferous and fresh mixed−broadleaved forest site types. For each combination of age, site type and gap size four gaps were sampled. In each gap, 3 circular sampling plots of 3 m radius were placed in northern, central and southern part of gap. The analysis were carried out separately for 6− and 10−year−old oaks and proved that gap size did not have an influence on height of younger and older oaks. In both cases, site type influence had statistical importance, but the practical silvicultural importance of this difference was only for older oaks. The position within gap was not important for growth of younger oaks, but had an influence on the height of older ones in different manner in different site conditions. The mean height of older oaks growing in more fertile conditions had maximum value in the centre of artificial gaps and diminished towards the periphery. On less fertile site types older oaks were the lowest in the northern position and their height in southern and central part of gaps was comparable.
Źródło:: Sylwan; 2011, 155, 02; 84-95
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Przestrzeń pojedynczego drzewa w drzewostanie panującym w zależności od wieku oraz typu siedliskowego lasu na przykładzie modrzewia (Larix decidua Mill.)
Single tree space in a dominant stand in relation to age and forest habitat type on the example of larch [Larix decidua Mill.]
Autorzy:: Kaźmierczak, K.
Pazdrowski, W.
Nawrot, M.
Szymański, M.
Powiązania:: https://bibliotekanauki.pl/articles/1009015.pdf
Data publikacji:: 2010
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
dendrometria
drzewostany panujace
wiek drzew
klasy Krafta
drzewa lesne
modrzew europejski
Larix decidua
przestrzen wzrostu
przestrzen pojedynczego drzewa
siedliska lesne
siedlisko boru mieszanego swiezego
siedlisko lasu mieszanego swiezego
growth space
crown
age
habitat type
biosocial position
larix decidua
Opis:: The study presents the results of the MANOVA investigation on single tree growth space. The study included 48 larch trees in a dominant stand of different age classes growing in the fresh mixed coniferous (BMśw) and fresh mixed broadleaved (LMśw) forest habitats. The space occupied by a single tree was calculated for each larch tree as the volume of a cylinder with a height equal to the height of a tree, while the base area was determined from the average crown radius. Basic statistical characteristics were established. The MANOVA was performed to assess the statistical significance of the impact of forest habitat type, age and biosocial position of trees in a stand. A similar analysis was done for two basic measurement characteristics of trees – diameter at breast height and height.
Źródło:: Sylwan; 2010, 154, 11; 764-772
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Wpływ masowego zamierania świerka w drzewostanach Białowieskiego Parku Narodowego na odnowienie naturalne dębu
Influence of spruce decline in stands of the Bialowieza National Park on natural oak regeneration
Autorzy:: Bobiec, A.
Bobiec, M.
Powiązania:: https://bibliotekanauki.pl/articles/1007250.pdf
Data publikacji:: 2012
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
Bialowieski Park Narodowy
siedlisko boru mieszanego swiezego
siedlisko lasu mieszanego swiezego
powierzchnie badawcze
drzewostany swierkowe
dynamika drzewostanu
swierk pospolity
Picea abies
zamieranie drzew
dab
Quercus
struktura grubosci
odnowienia naturalne
podrost
diameter structure
disturbances
ground fires
regeneration wave
stand decline
Opis:: The study aimed at analyzing the oak population structure was performed on the 29−hectare plot representing stands dominated by spruce in the strict reserve of the Białowieża National Park. It revealed that oaks represent two distinct cohorts: the old, emerged in the late 1800s, and the new that is being established in the area subject to mass decline of spruce. We suggest that the first regeneration wave was the result of ceasing the frequent ground fire regime that prevented the regeneration of trees except for pine. The current wave has been prompted by a set of changes in the habitat quality, following the breakdown of dense spruce−dominated stands. These changes, such as access to sunlight, accelerated decomposition of spruce litter, local exposure of mineral soil, and protective structures of lying spruce logs, provide regeneration advantage to oak and other intolerant species.
Źródło:: Sylwan; 2012, 156, 04; 243-251
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki