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Wyświetlanie 1-15 z 295
Tytuł:
Krótkookresowe reakcje przyrostowe jodły, świerka i sosny rosnących w jednorodnych warunkach siedliskowych
Short-term incremental response of silver fir, Norway spruce and Scots pine growing in uniform habitat conditions
Autorzy:
Wilczyński, S.
Powiązania:
https://bibliotekanauki.pl/articles/991702.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
dendroklimatologia
drzewa lesne
jodla pospolita
Abies alba
swierk pospolity
Picea abies
sosna zwyczajna
Pinus sylvestris
przyrosty radialne
reakcje przyrostowe
dendroclimatology
abies alba
picea abies
pinus sylvestris
tree−ring
central poland
Opis:
Study was performed in multi−species stand located in the Świętokrzyski National Park (central Poland). Silver fir, Norway spruce and Scots pine trees that grew in a uniform habitat conditions were selected. The trees showed the differences and similarities of changes of the size of radial increment, which result from species−specific sensitivity to selected meteorological elements.
Źródło:
Sylwan; 2013, 157, 06; 442-452
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Height-diameter models for mixed-species forests consisting of spruce, fir, and beech
Autorzy:
Petras, R.
Bosela, M.
Mecko, J.
Oszlanyi, J.
Popa, I.
Powiązania:
https://bibliotekanauki.pl/articles/38691.pdf
Data publikacji:
2014
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
height-diameter model
mixed-species forest
tree
spruce
fir
beech
Abies alba
Picea abies
Fagus sylvatica
Opis:
Height-diameter models define the general relationship between the tree height and diameter at each growth stage of the forest stand. This paper presents generalized height-diameter models for mixed-species forest stands consisting of Norway spruce (Picea abies Karst.), Silver fir (Abies alba L.), and European beech (Fagus sylvatica L.) from Slovakia. The models were derived using two growth functions from the exponential family: the two-parameter Michailoff and three-parameter Korf functions. Generalized height-diameter functions must normally be constrained to pass through the mean stand diameter and height, and then the final growth model has only one or two parameters to be estimated. These “free” parameters are then expressed over the quadratic mean diameter, height and stand age and the final mathematical form of the model is obtained. The study material included 50 long-term experimental plots located in the Western Carpathians. The plots were established 40–50 years ago and have been repeatedly measured at 5 to 10-year intervals. The dataset includes 7,950 height measurements of spruce, 21,661 of fir and 5,794 of beech. As many as 9 regression models were derived for each species. Although the “goodness of fit” of all models showed that they were generally well suited for the data, the best results were obtained for silver fir. The coefficient of determination ranged from 0.946 to 0.948, RMSE (m) was in the interval 1.94–1.97 and the bias (m) was –0.031 to 0.063. Although slightly imprecise parameter estimation was established for spruce, the estimations of the regression parameters obtained for beech were quite less precise. The coefficient of determination for beech was 0.854–0.860, RMSE (m) 2.67–2.72, and the bias (m) ranged from –0.144 to –0.056. The majority of models using Korf’s formula produced slightly better estimations than Michailoff’s, and it proved immaterial which estimated parameter was fixed and which parameters were free.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2014, 56, 2
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Czasowe i przestrzenne relacje między nasionami i siewkami drzew w buczynie karpackiej
Temporal and spatial relationship between seeds and seedlings in the Carpathian beech forest
Autorzy:
Skrzydłowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/1013031.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lasy gorskie
lesnictwo
Picea abies
klon pospolity
zageszczenie roslin
jodla pospolita
Acer pseudoplatanus
przezywalnosc
buk zwyczajny
nasiona
Abies alba
siewki
Fagus sylvatica
buczyna karpacka
drzewa lesne
swierk pospolity
seeds survival
fagus sylvatica
abies alba
picea abies
acer pseudoplatanus
Opis:
The research was conducted in beech−fir and beech stands in the territory of the Babiogórski and Ojcowski national parks. The obtained results showed that the density of seedlings after the autumn seed fall was small. The seed fraction from which seedlings emerged did not exceed 8%. In the Babiogórski National Park, no spatial relationship was found between seed and seedling abundance. However, such relationship was found in beech and sycamore in the Ojcowski National Park during one season. This was associated with a lower density of seed predating rodents in the forests around Ojców than on the Babia Góra and the specificity of the environmental providing a wide variety of living conditions for small mammals.
Źródło:
Sylwan; 2008, 152, 10; 41-47
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Problemy selekcji pneumatycznej nasion drzew lesnych
Autorzy:
Tylek, P.
Powiązania:
https://bibliotekanauki.pl/articles/816503.pdf
Data publikacji:
1999
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
aerodynamika
jodla pospolita
nasiona
Abies alba
Larix decidua
predkosc krytyczna
nasiennictwo
Picea abies
lesnictwo
swierk pospolity
modrzew europejski
Źródło:
Sylwan; 1999, 143, 12; 65-72
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Plonowanie i jakosc nasion swierka pospolitego [Picea abies [L.] Karst.] w zaleznosci od strefy w koronie oraz wybranych biologicznych i siedliskowych cech drzew
Autorzy:
Kluczynski, B.
Powiązania:
https://bibliotekanauki.pl/articles/812857.pdf
Data publikacji:
1992
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
nasiona
nasiennictwo
lesnictwo
Picea abies
dendrologia
swierk pospolity
Źródło:
Sylwan; 1992, 136, 05; 25-36
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The European spruce bark beetle Ips typographus (L.) in wind-damaged stands of the eastern part of the Tatra National Park - the population dynamics pattern remains constant
Autorzy:
Grodzki, Wojciech
Gąsienica Fronek, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/2042492.pdf
Data publikacji:
2019
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
Picea abies
mountain forests
insect outbreak
nature conservation
Opis:
In March 2017, in the eastern part of the Tatra National Park in Poland, large windthrowns affected the passively and actively protected Norway spruce Picea abies stands. In early 2018, a set of 12 small research plots (20 trees on each plot) was established in the Norway spruce stands next to the windblown area – 6 in the stands under active nature protection (broken and fallen trees processed in 2017), and 6 in the stands under passive nature protection (trees left on the ground). Living trees on the plots were regularly checked during the growing season in order to identify and register the spruces infested by Ips typographus, which were dissected in 2 or 4 halfmeter sections. 155 spruces (64%) infested by I. typographus were recorded on all 12 plots: 118 out of 120 (98%) in passive and 37 out of 120 trees (31%) in active protection. Mean infestation density calculated on 128 samples from 47 trees was higher under passive than under active protection (1.23 and 0.92 mating chamber per 1 dm2, respectively). Among 1709 gallery systems, those with 2 maternal galleries prevailed (63.0%); the mean share of females was higher in passive than in active protection zone (63.1 and 59.6% respectively). The mean number of progeny per one female was higher in active than in passive protection zone (20.23 and 19.12 respectively). I. typographus attack on standing trees had lower intensity in the stands previously subjected to the processing and removal of fallen and broken trees, which indicates positive effect of implemented active protection procedures. The parameters describing I. typographus population on attacked trees, as well as low activity of natural enemies, demonstrate its reproduction potential and resulting high risk of a new outbreak, according to the pattern known earlier from the other areas in Poland and Europe.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2019, 61, 3; 174-181
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rewizja zasiegu jodly, swierka, jaworu, modrzewia w krainie IV Mazowiecko-Podlaskiej
Autorzy:
Zareba, R.
Powiązania:
https://bibliotekanauki.pl/articles/816926.pdf
Data publikacji:
1994
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
jodla pospolita
wystepowanie
Acer pseudoplatanus
zasieg geograficzny
modrzew
Abies alba
Picea abies
lesnictwo
Larix
klon jawor
swierk pospolity
drzewa lesne
Źródło:
Sylwan; 1994, 138, 03; 5-13
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Śladami badań Władysława Jedlińskiego – określenie pochodzenia świerka na terenie Nadleśnictwa Skrwilno
Following the research of Wladyslaw Jedlinski – determination of the origin of spruce in the Skrwilno Forest District
Autorzy:
Lewandowski, A.
Litkowiec, M.
Fischer, A.
Powiązania:
https://bibliotekanauki.pl/articles/1008413.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Nadlesnictwo Skrwilno
drzewa lesne
swierk pospolity
Picea abies
pochodzenie roslin
markery genetyczne
DNA mitochondrialny
origin
picea abies
mitochondrial marker
Opis:
Origin of Norway spruce in the territory of Skrwilno Forest District was studied with the use of mitochondrial mt−D02 region inherited through maternal line. The former suppositions of Jedliński, who claimed that the origin of spruce in this territory was natural, have been confirmed. Concurrently, it has been established that in the majority of tree stands subject to our study there occurs spruce of Carpathian origin. The obtained results together with the palinological data indicate that the northern border of spruce range in Poland runs right through the territory of Skrwilno Forest District and not about 100 km to the south from this place as has been claimed so far.
Źródło:
Sylwan; 2012, 156, 09; 703-709
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polimorfizm izoenzymowy i zmienność genetyczna wybranych populacji cząstkowych świerka rasy istebniańskiej
Isozyme polymorphism and genetic variation of selected partial populations of Istebna spruce [Picea abies [L.] Karst]
Autorzy:
Polak-Berecka, M.
Perchlicka, I.
Powiązania:
https://bibliotekanauki.pl/articles/1017254.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
zmiennosc genetyczna
polimorfizm
izoenzymy
ekotypy
Picea abies
lesnictwo
swierk istebnianski
swierk pospolity
drzewa lesne
genetic diversity
isozyme polymorphism
picea abies
poland
Opis:
The genetic structure of Norway spruce [Picea abies (L.) Karst] of the Istebna race was studied in two populations from the Carpathian seed stands in the Malinka and Czarne Forestries. The recent provenance test results have shown a high quality of both populations. The results were compared with the genetic variation parameters calculated for the selected seed stand from the Bukowiec Forestry (compartment 149h), whose genetic structure in the progeny test for this species is considered a national standard. Five enzyme systems were analysed. The results show that the mean number of alleles per locus and the heterozygosity observed in the analysed populations are greater than those reported in the literature for other natural Norway spruce populations from the Carpathians. The heterozygosity level of the studied seed stands was higher than of the selective population of the Istebna spruce plus trees and the level of genetic diversity was similar to that of the Bukowiec seed stands. Thus, it can be concluded that the analysed seed stands from Czarne and Malinka, compartment 91h can be used as a supplementary seed base. However, at the individual partial population level, the Bukowiec spruce population, compartment 149h is considered to be of the highest value.
Źródło:
Sylwan; 2007, 151, 10; 47-53
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring of xylem formation in Picea abies under drought stress influence
Autorzy:
Gryc, V.
Hacura, J.
Vavrcik, H.
Urban, J.
Gebauer, R.
Powiązania:
https://bibliotekanauki.pl/articles/41506.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
monitoring
xylem formation
Norway spruce
Picea abies
drought stress
Opis:
The effect of drought stress on regular cambium activity and wood formation in stems of two different clones of Norway spruce (Picea abies (L.) Karst.) was investigated. Tissue samples were taken during the growing season from May to September 2010. Artificial drought stress, induced by long-term sheltering of the soil, was significantly manifested in clone 15. In the stressed individual, the period of cambium activity was shorter, the total number of formed cells was lower and the resulting tree ring was narrower. The number of cells in the phases of postcambial growth and secondary cell wall formation was significantly lower in comparison to the control tree. The tracheid lignification process was slower in the tree stressed by water deficit and the first mature tracheids were observed later. On the other hand, in clone 18 probably genetic dispositions played an important role as no considerable deviations in the cambium activity and new wood cells production were observed. Fitting xylem increments to the Gompertz function showed that the period of the most intensive cell formation was at the turn of June and July and the maximum daily production of new cells was higher in non-stressed individuals than in the stressed ones. The results of the experiment lead us to the conclusion that drought stress can significantly affect the cambium activity of some clones, the differentiation process of anatomical elements, and thus also the resulting tree ring width.
Źródło:
Dendrobiology; 2012, 67
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The radial growth-competition relationship in Picea abies stands affected by windfall
Autorzy:
Badea, O.
Dumitru, I.
Cojocia, C.
Popa, I.
Powiązania:
https://bibliotekanauki.pl/articles/41406.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Norway spruce
stand
Picea abies
windfall
risk factor
Opis:
Actual status of mountain forests especialy, of Norway spruce (Picea abies Karst. (L)) stands is a result of combined action between forest management measures and biotic and abiotic risk factors. In this context, tree growth dynamics is a result of multifactor interaction (competition, disturbance, management practice, climate etc.). Wind damage affect the stand structure and normal ecosystem functions including the relationship between individual tree growth and competition processes. Though, it is recorded a diminishing of productive capacity for affected stands as well as a significant diameter increment for remaining standing trees. The correlation between tree growth (cumulate basal area increment in the last 10 years) and competition (Hegyi and Schutz competition indices) was analysed in stands with different windfall intensity. No relationship between tree growth and competition was observed in highly affected stands. Schutz competition index explains better individual tree growth comparing with Hegyi index in low or no-affected stand by windthrow. The variability of the basal area increment (lnΔɡ10), explained by competition indices, is rather low (<2%) in the stand that had been highly affected by windfall, regardless of the selected competition index. Thus, significant reduction of the stand density related to number of trees (low density), as a consequence of high intensity windfalls, crown competition has a very small influence on the basal area increment comparing with situations met in low (high density) and moderate (medium density) affected stands.
Źródło:
Dendrobiology; 2015, 73
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Występowanie obupłciowych kwiatów na świerku pospolitym
Occurence of monoecious inflorescence on Norway spruce
Autorzy:
Misiorny, A.
Powiązania:
https://bibliotekanauki.pl/articles/1016195.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
plantacje nasienne
kwiaty obuplciowe
Picea abies
lesnictwo
swierk pospolity
drzewa lesne
picea abies (l.) karst.
second generation seed orchard
monoecious inflorescence
poland
Opis:
The paper describes the monoecious inflorescences of Picea abies (L.) Karst. found on two clone grafts 04−174 in the second−generation seed orchard near Kórnik in the experimental forest of the Institute of Dendrology, Polish Academy of Sciences.
Źródło:
Sylwan; 2007, 151, 07; 25-28
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pochodzenie świerka pospolitego (Picea abies (L.) Karst.) w Nadleśnictwie Kartuzy
Origin of Norway spruce (Picea abies (L.) Karst.) in the Kartuzy Forest District
Autorzy:
Lewandowski, A.
Szydlarski, M.
Litkowiec, M.
Powiązania:
https://bibliotekanauki.pl/articles/989990.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Nadlesnictwo Kartuzy
drzewa lesne
swierk pospolity
Picea abies
pochodzenie roslin
badania genetyczne
markery genetyczne
DNA mitochondrialny
origin
picea abies
mitochondrial marker
mitotype
Opis:
The origin of the Norway spruce in the Kartuzy Forest District was verified using the maternally inherited mitochondrial DNA marker mt15−D02 that shows distinct geographical distribution in Europe. We analyzed 462 trees from 26 populations. The majority of trees were of Alpine origin and they were present in all populations at a frequency of 6−90% (mean 59%). About 30% of trees were of the Carpathian origin and the least abundant (11%) were trees of north−eastern origin. The trees carrying north−eastern type of the mitochondial DNA marker were found only in 13 populations, but at a very different frequency (from 5 to 88%). The possibility of natural origin of Norway spruce in the area of Kartuzy Forest District was shortly discussed.
Źródło:
Sylwan; 2014, 158, 07; 509-515
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polimorfizm izoenzymowy świerka pospolitego z wybranych regionów Krutzscha testowanych w doświadczeniu IPTNS-IUFRO 1964/68 w Krynicy
Isoenzyme polymorphism in progenies of Norway spruce from selected Krutzsch regions of IPTNS-IUFRO 1964/68 provenance test in Krynica
Autorzy:
Masternak, K.
Sabor, J.
Powiązania:
https://bibliotekanauki.pl/articles/993950.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
hodowla lasu
drzewa lesne
swierk pospolity
Picea abies
zmiennosc genetyczna
izoenzymy
polimorfizm
markery izoenzymatyczne
doswiadczenia proweniencyjne
IUFRO
picea abies
isozyme
genetic variation
Opis:
The genetic variation of Norway spruce provenances from fourteen geographical regions were tested in the IPTNS−IUFRO 1964/68 experiment in Krynica. The genetic structure of seven isozyme systems coded by eleven loci was described. Parameters of genetic polymorphism i.e. the average number of alleles per locus and observed heterozygosity were 1.47 and 0.12, respectively. The spruces from Belarus were characterised by the highest genetic diversity, while the provenances from south−eastern Styria – the lowest. The values of Wright's inbreeding coefficient varied from –0.417 for the Romanian provenances to 0.223 for the provenances from 28 th Krutzsch regions (Tyrol−Salzburg; Austria).
Źródło:
Sylwan; 2013, 157, 01; 47-53
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 295

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