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Wyświetlanie 1-15 z 59
Tytuł:
Accumulation properties of Norway spruce (Picea abies) for different radionuclides
Autorzy:
Tomankiewicz, E.
Mietelski, J.
Gaca, P.
Błażej, S.
Powiązania:
https://bibliotekanauki.pl/articles/148612.pdf
Data publikacji:
2006
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
137Cs
50Sr
thorium
spruce tree
Tatra Mts.
aggregation coefficients
Opis:
The paper presents results for the 137Cs, 90Sr, 40K activity concentrations and 228Th/232Th, 230Th/232Th activity ratios in several samples needles from two Norway spruce (Picea abies) trees and two soil samples collected in the Tatra Mountains (Poland) area. Activities for artificial 137Cs and 90Sr show moderate values. Statistically different values were found between the mean concentration of 90Sr and 137Cs in current (C) and two years old (C+2) needles of the first tree, whereas for potassium no significant difference was observed. For the second, fallen tree, no significant difference between the mean activity concentration in needles for C+1 and C+2 was found for each radionuclide, but much lower levels of 137Cs contamination were observed. Observed values of the aggregation coefficients for 137Cs and 90Sr are presented.
Źródło:
Nukleonika; 2006, 51,suppl.2; 59-67
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biometric characterisation of selected seed stands of Picea abies (L.) Karst. of Istebna
Autorzy:
Orzel, S
Forgiel, M.
Powiązania:
https://bibliotekanauki.pl/articles/41646.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Norway spruce
Picea abies
seed stand
site condition
growing
tree
biometric characteristics
statistics
spruce tree
crown length
mountain vegetation
Opis:
The paper assesses the growth of nine seed stands of Picea abies (L.) Karst. of Istebna. The stands were selected on the basis of the dynamic height growth and good adaptation of their progeny under different site conditions. The d.b.h. increment of trees during the entire lifespan of stands is analysed in detail, especially its magnitude and dynamics during the last twenty years, i.e. from 1982 to 2001.
Źródło:
Dendrobiology; 2004, 51 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Species conversion of spruce stands in the Wisła Forest District
Autorzy:
Skrzyszewski, J
Skrzyszewska, K.
Powiązania:
https://bibliotekanauki.pl/articles/41743.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Wisla Forest District
spruce
Picea abies
Istebna spruce
seed stand
spruce stand
forest tree
species conversion
Opis:
The paper provides some guidelines on the choice of the target species compositions for plantations that would replace monocultural spruce stands growing on the sites of the Silesian Beskid Mts. Part of the guidelines relates to the rules governing the sequence in which the monocultures will be converted into mixed stands. It is suggested that those rules should be combined with the principles of the establishment of progenyplantations. The seed stands of the Istebna spruce are experimentally divided into four categories according to their abilityto perform the function of a seed stand. The following features of the stands are analysed: vitality, density, stage of regeneration, protective and cultural functions. The paper contains also an outline of the methods of species conversion and the relevant references.
Źródło:
Dendrobiology; 2004, 51 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using FORDRY model to forecast transformation of Norway spruce (Picea abies (L.) Karst.) stands in Nadsyansky Regional Landscape Park (Ukrainian Carpathians)
Autorzy:
Kozak, Ihor
Parpan, Taras
Shparyk, Yuriy
Mylenka, Myroslava
Kozak-Balaniuk, Iryna
Powiązania:
https://bibliotekanauki.pl/articles/2041033.pdf
Data publikacji:
2021
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
spruce forest decline
tree biomass
tree number
species composition
prediction
simulation experiment
gap model
Opis:
The aim of this study was to simulate transformation of species composition, biomass and number of treesin spruce stands depending on a possible combination of cutting and planting scenarios as well as climate changes. The FORDRY computer model was used to predict the dynamics of Norway spruce (Picea abies (L.) Karst.) stands in Nadsyansky Regional Landscape Park in the Ukrainian Carpathians. Potential changes in species composition, biomass and number of trees were forecasted for the next 50 years. Four scenarios, first – warm-dry, second – cutting dead spruce trees, third – cutting all trees andfourth – planting, were compared to the control one. The analysis revealed a rapid decrease of stand biomass in the first decade as a result of spruce decline. The model predicts an increase in beech biomass before the 50th year of simulation in all scenarios. In the planting scenario, the biomass of beech increased up to 199.9 ± 6.9 t·ha-1 in the 50th year. Correlation analysis showed weak autocorrelations of spruce and negative cross-correlations of spruce with the total stand in control and other scenarios. The output of performed simulations is supported with field and literature data. Results of this study can be applied in the long-term planning of the management and conservation activities in this region. The application of FORDRY model was found useful for analysing the potential scenarios of spruce stand transformation in Nadsyansky Regional Landscape Park.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2021, 63, 3; 183-194
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Net radiation of mountain cultivated Norway spruce [Picea abies (L.) Karst.] stand: evaluation of short- and long-wave radiation ratio
Autorzy:
Markova, I.
Marek, M.V.
Powiązania:
https://bibliotekanauki.pl/articles/38453.pdf
Data publikacji:
2011
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
net radiation
mountain
cultivated plant
tree
Norway spruce
Picea abies
tree stand
radiation dose
Opis:
The radiation exchange drives the plant ecosystems energy balance and provides the energy for photosynthesis, transpiration and plant growth. The investigation on net radiation and its component during vegetation season in relation to the clearness index and sun elevation in a cultivated 31-year-old mountain spruce [Picea abies (L.) Karst.] stand is presented. Downward short-wave radiation – Sd (incident on the spruce stand was the main part of the short-wave radiation balance during the whole growing season (April–October) 2008. The Sd a mount i s seasonally variable factor determined by the duration of solar shine and the atmosphere transmissivity. Obtained value of net radiation (Rn) and downward short-wave radiation (Sd) ratio amounts to 0.61 on average during the growing season 2008 documenting the importance of the downward short-wave radiation in the net radiation of investigated spruce stand.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2011, 53, 2
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ wskaźnika zadrzewienia drzewostanu na wybrane cechy makrostruktury i gęstość drewna świerkowego (Picea abies (L.) Karst.)
Effect of stand density index on selected features of macrostructure and density of Norway spruce (Picea abies (L.) Karst.) wood
Autorzy:
Michalec, K.
Powiązania:
https://bibliotekanauki.pl/articles/978906.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
tree−ring width
latewood proportion
wood density
Norway spruce
Opis:
The aim of the study was to determine the influence of stand density index on the tree−ring width, latewood proportion and wood density for Norway spruce. Study sites were located as follows: 12 within the north−eastern species range in Poland, 7 in the south−western range, in the Sudety Mts., and 9 in the Carpathians (southern range). Clustering stands according to their stand density index, 10 data groups were established: stand density index values from 0.3 to 1.2. The study plots were 100×100 m squares. On each plot 15 trees were chosen and increment cores were sampled using the Pressler borer. The smoothed cores served for measuring the width of annual rings, latewood zones and the share of latewood as well as for determination of relative wood density. The performed analyses indicate that mean tree−ring width was the highest in trees from stands with density index from 0.3 to 0.8 (with the exception of 0.7), whereas the it was gradually decreasing in stands with index higher than 0.9. The statistically significant differences between the analyzed stands were observed (p<0.0001). The analysis of the influence of stand density index and the width of annual rings revealed significant, negative weak correlation (r=–0.242, p<0.001). In turn, the latewood proportion was the highest in trees from stands characterised by the highest stand density index and the lowest in trees from stands with the lowest one. The differences between analyzed groups of stands were statistically significant (p<0.0001), as well as the correlation which was significant, positive and weak (r=0.269, p<0.001). Wood density was the highest in trees from stands with the highest stand density index (1.1 – 363 kg/m3 i 1.2 – 365 kg/m3) as well as in those from stands characterised by 0.7 density index (369 kg/m3). Significant differences were observed (p<0.0001) only between stand density index 0.3−0.7 and 0.7−0.8. Significant correlation was not observed.
Źródło:
Sylwan; 2020, 164, 09; 719-725
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Size and localisation of knots in timber from mountain spruce stands in the Dolomites
Autorzy:
Barszcz, A.
Sandak, A.
Sandak, J.
Powiązania:
https://bibliotekanauki.pl/articles/38333.pdf
Data publikacji:
2010
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
size
localization
knot
timber
mountain spruce
tree stand
Dolomites
knot healthiness
Opis:
The aim of the study was evaluation of knots in wood of 150-year-old Norway spruce [Picea abies (L.) Karst.] in stands situated at the altitude of 1450– 1740 m above sea level in the Dolomites in Italian section of the Alps. In selected stands, spruce trees were cut down and their length, stem thickness, height to the crown base and stem diameters at every 1 m along the length of merchantable bole were measured. The diameter of knots was measured and they were classified according to their healthiness and the degree of their tightness with the surrounding wood. The relative knot diameters were calculated and the relative height of their location on stem was determined. In total on sample trees there were analysed 1070 knots, of which sound knots (close to 75%) and tight (more than 60%) prevailed. Sound and tight knots had largest diameters, relative diameters and relative heights of location on merchantable boles. The smallest diameters and relative diameters were indicated by rotten and not tight knots that were located at the lowest merchantable bole parts.
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:
A 434-year tree-ring chronology of spruce (Picea abies) with indications of Estonian precipitation
Autorzy:
Laanelaid, A.
Helama, S.
Eckstein, D.
Powiązania:
https://bibliotekanauki.pl/articles/41704.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
dendrochronology
conifer
dendroclimatology
drought
Norway spruce
Picea abies
tree ring
Estonia
Opis:
In this study, an Estonian tree-ring network of Norway spruce (Picea abies (L.) H.Karst.), originating from both living trees and dead wood of construction wood, was used for determining the growth variations over the past 350 years (AD 1657–2009). Regional curve standardization was used to remove the non-climatic growth variations from the individual tree-ring series prior to dendroclimatic analyses to focus on the low-frequency (long-term and -period) growth variations. Previously, the chronology has been shown to correlate markedly well with Estonian precipitation history. Here we further detail this dendroclimatic connection. Correlations between the Estonian precipitation and treerings improved systematically with both the number of meteorological stations included and with the documented technical advances in the network of instrumental weather observations. The observed June precipiation explains roughly 20 percent of the tree-ring variance over the period when the network of weather observations is densest (1946–2009). On decadal and longer scales, the June precipitation explains higher portion of tree-ring variance, roughly 50 percent, over the full instrumental era (1866–2009). Comparison with previously published and similarly standardized tree-ring chronology from south-eastern Finland, based on Scots pine tree-rings, showed that the two chronologies exhibit several coinciding periods of ameliorated and deteriorated growth.
Źródło:
Dendrobiology; 2015, 73
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exogenous seed treatment with proline and its consequences to Norway spruce (Picea abies (L.) H. Karst) seedling establishment
Autorzy:
Kijowska-Oberc, J.
Wawrzyniak, M.K.
Staszak, A.M.
Ratajczak, E.
Powiązania:
https://bibliotekanauki.pl/articles/2130182.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
proline
seed treatment
Norway spruce
seedlings development
tree seeds
oxidative stress
Opis:
Accumulation of proline is a defense mechanism against external stress conditions, preventing damage to the structure and function of cells and improving plant development processes, such as germination. The purpose of this study was to investigate proline treatment as a means of improving the germination and development of Norway spruce seedlings. The effect of exogenous proline has been studied in three stages of initial plant development. The collected seeds were soaked in water or 8 mM proline solution and placed on the germinators. The germination capacity and the mean germination time were determined. Seedlings with radicles >10 mm were transferred to the sand-peat substrate at a constant temperature of 20 °C. Seedlings at 3 subsequent developmental stages (S1 – germinated seeds with radicles > 3 mm; S2 – seedlings with radicles >10 mm; S3 – established seedlings grown for 90 days) were examined for the oxygen consumption rate, total antioxidant capacity, hydrogen peroxide level, malondialdehyde level and intracellular proline content. Proline treatment was conducive to lowering the levels of hydrogen peroxide and malondialdehyde at stage S1. At the subsequent stages of development, the levels of hydrogen peroxide and malondialdehyde increased, and at the S3 stage, there was also a marked increase in total antioxidant capacity. At stage S3, the seedlings of the proline treatment were characterized by a lower total mass, and the response to exogenous proline was stronger in the root tissues than in the leaves. The oxygen consumption rate was higher for the proline treatment at all stages of development. Seedlings at the analyzed stages of establishment differed in response to proline treatment. Exogenous proline had some beneficial effects during the first phase of germination by reducing the level of hydrogen peroxide and improving the condition of lipid membranes. In the subsequent stages of seedling development, in response to the same concentration of proline solution, undesirable effects, such as an increase in hydrogen peroxide levels and damage to cytoplasmic membranes, were observed. Optimal concentrations of exogenous proline should be determined prior to commercial use of proline treatment to improve plant stress tolerance.
Źródło:
Dendrobiology; 2022, 87; 149-162
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Treatment of bark beetle attacked trees with entomopathogenic fungus Beauveria bassiana (Balsamo) Vuillemin
Autorzy:
Jakus, R.
Blazenec, M.
Powiązania:
https://bibliotekanauki.pl/articles/38427.pdf
Data publikacji:
2011
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
bark beetle
attacked tree
entomopathogenic fungi
Beauveria bassiana
Ips typographus
Norway spruce
Opis:
We carried out an experiment with using the entomopathogenic fungus Beauveria bassiana (Bals.) Vuill. for sanitation of active infested trees. We used 15 active infested trees from which 5 stems were treated with an insecticide, 5 were treated with solution of the tested entomopathogenic fungus and 5 were left as control. The used insecticide was pyretroid Fury 10 EW. We used a biopreparation based on the entomopathogenic fungus B. bassiana in form of wettable powder. The material was diluted. The suspension contained 107spores of the tested entomopathogenic fungus in 1 ml. The suspension was applied across the whole stem surface. We succeeded to infect about 28.75% of Ips typographus L. individuals in the treated stems. The number of live individuals was comparable with the variant using the insecticide.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2011, 53, 2
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary assessment of the ecochemical condition of soils after fertilization of younger spruce Picea abies (L.) H. Karst. stands in the Beskid Slaski and Zywiecki Mts.
Autorzy:
Malek, S.
Januszek, K.
Barszcz, J.
Blonska, E.
Wanic, T.
Gasienica-Fronek, W.
Kroczek, M.
Powiązania:
https://bibliotekanauki.pl/articles/38500.pdf
Data publikacji:
2011
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
ecochemical condition
soil
fertilization
young tree
Norway spruce
Picea abies
tree stand
mountain
Beskid Slaski Mountains
Beskid Zywiecki Mountains
Opis:
The experimental plots were located in the middle forest zone (900– 950 m) on two nappes of the flysch Carpathians: Magura (the Ujsoły Forest District) and Silesian (the Wisła Forest District) in the spruce stands of age class 21– 40 years. Serpentinite was introduced in the autumn of 2008 on all plots while other fertilizers (N, P, NP and NPK) in the spring of 2009. Based on the chemical composition of soil solutions collected in lysimeters placed at the depth of 20 cm in the autumn 2008 and the spring and autumn 2009, ecochemical parameters were calculated: acid neutralization capacity (ANCaq), alkalinity (ALK), the degree of soil acidity (Ma%), acidic cations (Ma), saturation of the exchangeable complex of the soil solid phase (Mb) with alkalis, saturation with alkalis (BS), molar relations Ca/Al, Mb/Al, BC/Al. After the winter, soil solutions became acidic, especially in the Wisła Forest District. The saturation of the studied soils demonstrates moderate flexibility of soils in the Wisła Forest District in relation to acid load, and high flexibility of the Ujsoły soils. The opposite trend was observed for the degree of acidity of soils. Acid neutralization capacity and alkalinity of the waters showed significant variations in soil pH even in the case of small variations in the composition of the solution, if they were caused by the inflow of the anions of NO3 - and SO4 2-. After application of the fertilizers, an increase of Mg, Ca and Mb was noted in the soil solution, determined in the overlaying highly acidic organic horizons trough the ion-exchange buffering mechanism of highly protonated functional groups with high buffering capacity. Highly improved content of Mg in a soil, and in some cases – also the content of N, P and K, present potential improvement of forest growth capacity without the hazard of adverse side-effects of liming. Aluminum stress in the spruce is unlikely, while trees in the control plots in the Wisła Forest District may already be sensitive.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2011, 53, 2
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of increased nitrogen depositions and drought stress on the development of young Norway spruce Picea abies (L.) Karst. stands
Autorzy:
Palatova, E
Powiązania:
https://bibliotekanauki.pl/articles/41235.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
forest tree species
plant development
Norway spruce
Picea abies
young tree
drought stress
nitrogen deposition
tree stand
biomass
fine root
functionality
mycorrhiza
Opis:
The effects of drought stress, stress by increased nitrogen depositions and the combined effect of the two stress factors on the growth of Norway spruce Picea abies (L.) Karst. were studied in two stands. The drought stress was induced by reducing atmospheric precipitations by 60% and the increased nitrogen depositions were simulated by repeated applications of ammonium sulphate at a rate corresponding to 100 kg N ha–1 year–1. All stress factors under study affected the height increment of the above-ground part, the length and colour of needles, and the biomass, vertical distribution, functionality and mycorrhizal infection of fine roots. The root system responded to the simulated stresses right from the the very first year of their action, exhibiting a greater damage than the above-ground part of the plant. Drought acted as a stress factor stronger than the nitrogen depositions themselves. The strongest impact was recorded in the simultaneous influence of the stress factors.
Źródło:
Dendrobiology; 2004, 51 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Breeding programmes of Norway spruce Picea abies (L.) Karst. in the Czech Republic
Autorzy:
Hynek, V
Powiązania:
https://bibliotekanauki.pl/articles/41747.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Czech Republic
forest tree
Norway spruce
Picea abies
breeding programme
altitudinal vegetation zone
Opis:
In the Czech Republic, Norway spruce has a natural representation in all forest altitudinal vegetation zones, in some of which (FAVZ 1, 2 and 9), however, it is scarce. The three basic climatic ecotypes of spruce identified in the Czech territory, i.e. an upland ecotype, a higher elevation ecotype and a mountain ecotype, can be characterised on the basis of the forest altitudinal vegetation zones of their origin. The paper presents the breeding work completed so far and all the breeding programmes implemented for Norway spruce, including projects worked out for the Krkonoše National Park.
Źródło:
Dendrobiology; 2004, 51 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Health condition of Norway spruce Picea abies (L.) Karst. stands in the Beskid Mts
Autorzy:
Holusa, J
Powiązania:
https://bibliotekanauki.pl/articles/41422.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Norway spruce
Picea abies
spruce stand
Beskids Mountains
Moravo-Silesian Beskids Mountains
health condition
tree condition
rot infestation
insect
nutrient supply
climatic agent
mechanical destruction
snow
wind
air pollution
physiological condition
tree
Opis:
The health condition of spruce stands in the Moravian-Silesian Beskids is affected by several predisposition factors, the most important of which is the allochthonous character of spruce grown on improper sites. When exposed to a low supply of nutrients and intensive mechanical damage mainly by game, the trees are susceptible to rot infestations, climatic agents and mechanical destruction by snow, hard rime and wind. At present, air pollution does not show any significant impact on the spruce stands; it rather acts as a less important predisposition factor on mountain peaks. The physiological condition of trees is not impaired to the extent which would facilitate infestation with phytophagous or cambioxylophagous insects.
Źródło:
Dendrobiology; 2004, 51 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quality assessment methods for Picea abies seeds
Autorzy:
Prochazkova, Z
Powiązania:
https://bibliotekanauki.pl/articles/41166.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
international conference
Europe
forest ecosystem
plant breeding
tree
Norway spruce
Picea abies
seed quality
purity
germination
health testing
assessment method
spruce seed
Opis:
The quality assessment of spruce seeds consists mainly in determining their germination capacity, including germination rate (speed), but also purity and weight. Internationally recognised methods are listed in the ISTA Rules for Seed Testing which also specify test conditions. Some countries such as Poland use modified methods. Apart from providing information about the purity of a species, purity testing can also identify the proportion of winged seeds in each seed lot. Germination tests yield data on the maximum germination potential of a seed lot which are used to compare the quality of different lots and to establish the field sowing values. This paper presents the methods used for assessing the quality of Norway spruce seeds, and discusses their advantages and disadvantages and the problems that need further investigation.
Źródło:
Dendrobiology; 2009, 61 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
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