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Wyszukujesz frazę "douglas, I." wg kryterium: Wszystkie pola


Wyświetlanie 1-8 z 8
Tytuł:
Związki między wybranymi parametrami korony a cechami makrostruktury i gęstością drewna daglezji zielonej (Pseudotsuga menziesii var. viridis Franco)
Relationships between selected crown parameters and the macrostructure properties and density of Douglas fir [Pseudotsuga menziesii var. viridis Franco] wood
Autorzy:
Wąsik, R.
Powiązania:
https://bibliotekanauki.pl/articles/1009000.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drzewa lesne
daglezja zielona
Pseudotsuga menziesii
korony drzew
dlugosc korony
szerokosc korony
smuklosc korony
drewno daglezjowe
przyrosty roczne
sloje przyrostu rocznego
gestosc drewna
korelacja cech
douglas fir
wood
crown
poland
Opis:
The paper presents an analysis of interactions between the selected tree crown parameters and the macrostructure properties and density of wood of Douglas fir growing in the territory of Poland. The correlation coefficients between crown parameters and wood properties were calculated and difference significance tests were performed for the selected properties.
Źródło:
Sylwan; 2010, 154, 11; 783-790
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
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
Artykuł
Tytuł:
Zasoby genowe i potencjał hodowlany daglezji (Pseudotsuga menziesii (Mirb.) Franco) w lasach niektórych krajów europejskich
Genetic resources and silvicultural potential of Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) in some European countries
Autorzy:
Chałupka, W.
Powiązania:
https://bibliotekanauki.pl/articles/991061.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Europa
gatunki introdukowane
drzewa lesne
daglezja zielona
Pseudotsuga menziesii
zasoby genowe
program hodowlany
selekcja
Francja
Niemcy
Wielka Brytania
Dania
Holandia
Polska
drzewostany daglezjowe
zasobnosc drzewostanu
baza nasienna
douglas fir
introduction
europe
volume stock
registered base material
Opis:
Since the beginning of XIX century a considerable number of Douglas fir populations from North America were introduced to many European countries. In France, Douglas fir is still going to increase significantly its participation in growing stock and wood harvest. There are also some countries (e.g. the Netherlands), where the interest in breeding and silviculture of Douglas fir have been decreased in last decades. The data from the European literature was collected to show a current volume stock, growth increment, gene resources and qualified seed sources of Douglas fir in the outlook of the future role of the species in European forest economy. A short outlook on the breeding programs of Douglas fir working out in several European countries was also presented.
Źródło:
Sylwan; 2014, 158, 05; 331-339
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wielkość i wartość zasobów surowca drzewnego robinii akacjowej i daglezji zielonej w Lasach Państwowych
Amount and value of black locust and Douglas fir timber resources in the State Forests in Poland
Autorzy:
Jamińska, J.
Bronisz, K.
Bijak, S.
Powiązania:
https://bibliotekanauki.pl/articles/985871.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Panstwowe Gospodarstwo Lesne Lasy Panstwowe
zasoby drzewne
robinia akacjowa
Robinia pseudoacacia
daglezja zielona
Pseudotsuga menziesii
wartosc lasu
surowce drzewne
wartosc pieniezna
forest value
forest resources
robinia pseudoacacia
pseudotsuga menziesii
Opis:
The objective of the study was to determine the quantitative and valuable potential of wood resources of black locust (Robinia pseudoacacia) and Douglas fir (Pseudotsuga menziesii) in individual regional directorates of the State Forests (RDSFs) in Poland. We used data from the State Forests Information System database (values for the end of 2014) to determine the amount of the resources of the analysed species in forests under the State Forests management. The monetary value of black locust and Douglas fir resources was determined using both the indicator method and on the basis of sales prices of individual assortments. The occurrence, and hence the resources of black locust and Douglas fir in our country are characterized by considerable spatial diversity. Generally speaking, studied tree species are of minor importance in Polish forests as far as area and volume are concerned, but both species can the most often and in the large abundance be found in the western and northern Poland. The average sale price of wood of the tested species varied a lot in individual regional directorates of the State Forests (fig.). In the case of black locust the average sale price ranged from 99 PLN/m3 in RDSF Szczecinek to 151 PLN/m3 in RDSF Krakow, while for Douglas fir the values from 59 PLN/m3 in RDSF Łódź to 277 PLN/m3 in RDSF Katowice were obtained. The total value of black locust timber resources was assessed by the sale price method at PLN 262.4 million, and by the indicator method at PLN 186.4 million. In the case of Douglas fir timber, these values were much higher and amounted to PLN 375.0 and 309.2 million, respectively. The highest value of the studied species stands was noted in the RDSF with the largest amount of their resources.
Źródło:
Sylwan; 2018, 162, 09; 737-744
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Konduktometryczna metoda oceny żywotności nasion sosny zwyczajnej (Pinus sylvestris L.) i daglezji zielonej (Pseudotsuga menziesii (Mirb.) Franco)
Conductivity test for Scots pine (Pinus sylvestris L.) and Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) seeds vitality assessment
Autorzy:
Jastrzębowski, S.
Kantorowicz, W.
Aniśko, E.
Ukalska, J.
Powiązania:
https://bibliotekanauki.pl/articles/988974.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
hodowla lasu
nasiennictwo
sosna zwyczajna
Pinus sylvestris
daglezja zielona
Pseudotsuga menziesii
nasiona
zywotnosc nasion
metody oceny
konduktometria
vitality class
electrolyte leakage
conductometry
seed
Opis:
The level of damage to the cell membranes is a sign of aging of the seeds and a decrease in their viability. Conductometric seed testing method indirectly utilizes uncontrolled leakage of ions from seeds with damaged cell membranes to assess their viability. This involves the use of an electrical conductivity of the aqueous solution, in which seeds are soaked. The research was conducted in the years 2011−2014 and aimed at developing the methodology of evaluation of Scots pine and Douglas fir seeds by conductivity test. The aim of the study was to determine the relationship between electrolyte leakage and germination capacity of Scots pine and Douglas fir seeds. 402 samples of Scots pine seed and 90 specimens of Douglas fir seed from all over Poland were tested. The research material was both freshly harvested and stored. Scots pine seeds were obtained in the years 2008−2014, while Douglas fir – 2003−2013 as well as ones stored in the refrigerator for 15 years. Conductivity test and standard seed germination procedure of the analyzed species were used. For both Scots pine and Douglas fir, we noted that, as the electrolyte leakage rate increased, the germination capacity of the seed decreased. So we decided to test whether the vitality of the seeds was determined by means of a conductivity test. The best−fit regression model was determined and the mean expected germination capacity in the viability classes was calculated. 95% confidence intervals for the regression function were also determined. Evaluation of the viability of the seeds by means of the conductometric method is especially useful for seeds requiring a long stratification period (e.g. Douglas fir to determine the potential loss of their vitality. Although the ISTA seed evaluation rules do not require conductivity test for evaluating the seeds of Scots pine and Douglas fir, it may be applicable in situations where it is necessary to perform a rapid assessment of viability before spring sowing.
Źródło:
Sylwan; 2017, 161, 11; 927-934
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Roślinność naturalna acidofilnej dąbrowy i plantacji sosny, daglezji i buka w rezerwacie Dąbrowa Krzymowska (Puszcza Piaskowa)
Natural vegetation of acidophilous oak forest and Scots pine, Douglas fir and beech plantation in the Dabrowa Krzymowska nature reserve (Piaskowa Forest)
Autorzy:
Puchałka, R.
Płąchocki, D.
Powiązania:
https://bibliotekanauki.pl/articles/990889.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Puszcza Piaskowa
rezerwaty przyrody
rezerwat Dabrowa Krzymowska
zespol Calamagrostio-Quercetum
roslinnosc
analiza porownawcza
plantacje drzew lesnych
drzewostany sosnowe
drzewostany daglezjowe
drzewostany bukowe
calamagrostio arundinaceae−quercetum
forest plantations
nature protection
Opis:
Phytosociological relevés from a natural acidophilous oak forest Calamagrostio−Quercetum, as well as Scots pine, Douglas fir and beech plantations located in the same habitat were analysed. Our investigations did not confirm the negative effect of Scots pine on biodiversity. We observed a decline of species number with the decrease of light availability. The undergrowth biodiversity in the oak forest was reduced by the presence of beech the most. The observed quantitative and qualitative differences among the compared forests resulted from the combined effects of light availability, the character of plant litter, agrotechnical works, as well as dispersal abilities of plant species.
Źródło:
Sylwan; 2014, 158, 03; 212-220
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Redukcja przyrostów rocznych daglezji zielonej i sosny pospolitej w zależności od warunków termiczno-pluwialnych w Nadleśnictwie Kędzierzyn
Reduction of Douglas fir and Scots pine radial increments depending on thermal and pluvial conditions in Kedzierzyn Forest District
Autorzy:
Ziemiańska, M.
Kalbarczyk, R.
Bilous, A.
Leshchenko, O.
Powiązania:
https://bibliotekanauki.pl/articles/979478.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
dendroklimatologia
drzewa lesne
daglezja zielona
Pseudotsuga menziesii
sosna zwyczajna
Pinus sylvestris
przyrosty roczne
redukcja przyrostu
warunki termiczno-opadowe
Nadlesnictwo Kedzierzyn
dendroclimatology
pseudotsuga menziesii
pinus sylvestris
tree−ring reductions
Opis:
The main objective of the research was to evaluate the incremental response of Douglas fir and Scots pine subjected to strong environmental stress to variable thermal and precipitation conditions. We also attempted to determine periods of tree−ring width reduction caused by strong anthropopressure associated with the activities of nearby industrial plants, which are burdensome for the environment. The studied forest stands are located in the Kędzierzyn Forest District, in Kotlarnia forestry (50°27'59'N, 18°38'42'E) approximately 8 km away from the nitrogen production plants. We used standard methodology applied in the dendrochronological studies with the support of the TSAP−Win, Cofecha, Arstan and Quercus 06.01 softwares. We found that Douglas fir and Scots pine stands growing in the permanently damaged zone due to the adverse effects of industry responded to meteorological conditions in a manner typical of the species. In the study of the relationship between weather and growth, thermal and precipitation conditions were more important in the current year than in the year preceding the increment. A similar distribution of reductions and periods of partial regeneration in both species were also observed. In the same multi−annual period of 1961−1991 deeper reductions of annual increments were observed in Douglas fir (>70%) than in Scots pine (in the range of 50−70%). Conditions, in which trees grew in the Kędzierzyn Forest District, contributed to the decrease in annual increments of both Douglas fir and Scots pine, while the previous species turned out to be a more sensitive one, which had been indicated by other researchers ealier.
Źródło:
Sylwan; 2019, 163, 03; 198-208
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wplyw warunkow podsuszania nasion modrzewia europejskiego, daglezji zielonej i sosny gorskiej przeznaczonych do dlugookresowego przechowywania na ich zywotnosc
The effect of drying seeds of European larch, Douglas-fir and mountain pine foreseen for a long-term storage on their viability
Autorzy:
Witowska, O.
Anisko, E.
Zaleski, A.
Powiązania:
https://bibliotekanauki.pl/articles/46401.pdf
Data publikacji:
2009
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
nasiennictwo
drzewa lesne
modrzew europejski
Larix decidua
daglezja zielona
Pseudotsuga menziesii
sosna gorska
Pinus mugo
nasiona
podsuszanie
przechowywanie dlugoterminowe
wilgotnosc nasion
zywotnosc nasion
Pseudotsuga douglasii zob.Pseudotsuga menziesii
Źródło:
Leśne Prace Badawcze; 2009, 70, 3; 253-269
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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