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Wyszukujesz frazę "roztoczański national park" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Projekt koncepcyjny sensualnej ścieżki dydaktycznej w Roztoczańskim Parku Narodowym
Conceptual design of a sensory didactic path in the Roztoczanski National Park
Autorzy:
Żuraw, B.
Chyżewska, R.
Boruch, M.
Myśliwiec, .
Podsiedlik, M.
Powiązania:
https://bibliotekanauki.pl/articles/989656.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
parki narodowe
Roztoczanski Park Narodowy
sciezki dydaktyczne
sciezka sensualna
projekty
sensory path
roztoczański national park
centre for education and museum
zwierzyniec
Opis:
The study presents the design of sensual didactic path at the Centre for Education and Museum (OEM) of the Roztoczański National Park (south−eastern Poland). The design work was preceded by an architectural−landscape analysis carried out in 2014. List of trees and shrubs growing in the front part was made and plant communities, which are located between the main building and the river Świerszcz, were identified with Braun−Blanquet method. In total, 21 Magnoliophytina and 7 Pinophytina species were recorded. On the basis of phytosociological inventory we distinguished eight classes of Molinio−Arrhenatheretea, Epilobietea angustifolii and Phragmitetea. The conceptual design, based on a combination of natural and architectural elements, which will affect various senses was elaborated. Designed plant systems cover several formations (fig. 1). The sense of sight will be activated by the color of plants and small architecture elements. The sense of hearing will be stimulated by wind bells and flutes, and the sense of touch, by boxes of dried plant material. The smell will be affected by aromatherapeutic species of plants. The balance will be developed by movable walkways and wavy wooden walkways, mounted on a track that constitutes a part of a wooden platform, secured with a handrail. The designed structure will also be equipped with a trampoline, a grid−hammock and swing adapted for people using wheelchairs. Trail model placed at the entrance to the path and information board will support the educational offer. Pedestrian routes in the form of stone paths and wooden walkways, diverse in terms of texture, will create friendly to explore labyrinth, secured with a balustrade. Near paths, on higher flowerbeds and tables equipped with information signs, species characteristic for the Park will grow. Indication of protected and endangered status will be displayed. Descriptions of the plants will be provided both in traditional writing and in Braille system on a transparent plexiglass. The proposed components of plant system fully exploit the potential of a naturally diversified area around the OEM, and introduce architectural elements and pedestrian routes will allow also people with disabilities, feel as a full members of the community, when using the path.
Źródło:
Sylwan; 2016, 160, 01; 71-78
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Określenie przy pomocy krzywej równowagi pożądanej struktury liczby drzew w lesie różnowiekowym
Determination of the desirable tree abundance pattern in the uneven-aged forest using the equilibrium curve
Autorzy:
Kweczlich, I.
Miścicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/1019275.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
Roztoczanski Park Narodowy
krzywa rownowagi
Abies
rezerwaty przyrody
buk
lesnictwo
model rownowagi dla lasu
Fagus
drzewostany roznowiekowe
rezerwat Bukowa Gora
obliczenia
urzadzanie lasu
jodla
struktura drzew
equilibrium curve
tree density
forest regeneration
strict protection
selection forest
fir
beech
bukowa góra
roztoczański national park
Opis:
The theoretical tree density in a stand was calculated using an equilibrium curve model. The Bukowa Góra forest (Roztoczański National Park) placed under strict protection was the object of the study. Calculations were made separately for the main species − fir and beech. The data on tree mortality rate and their diameter growth (or height in the case of low trees) collected in 1991, 1996 and 2001 on permanent sample plots were used. The correspondence between the actual and model tree density curves in diameter classes was confirmed only in the case of firs from the upper layer of stands. The shortage of firs (in comparison with the model data) and the excess of beeches in the regeneration layer in respect of thin and moderately thick DBH were confirmed by gradual changes in tree−species composition between 1991 and 2001.
Źródło:
Sylwan; 2006, 150, 03; 17-30
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prognoza rozwoju drzewostanów lasu naturalnego z wykorzystaniem modelu według klas wymiarów
Forecast of the development of natural forest resources using a size-class growth model
Autorzy:
Gazda, A.
Miscicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/972934.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany
buk zwyczajny
Fagus sylvatica
Abies alba
modele wzrostu
las naturalny
prognozowanie rozwoju
Roztocze
leśnictwo
Bukowa Góra
jodła pospolita
model wzrostu według klas wymiarów
silver fir
increment
mortality
Roztoczański National Park
European beech
Opis:
The size−class growth model is an empirical model applicable for the prediction of the dynamics of natural forest growth. It is based on the following assumptions: (1) changes in the forest condition are determined on the basis of the sum of the changes that take place in individual size classes, (2) the trees in a given class are represented by single average tree, (3) the calculation of the future tree density distribution in size classes (fig. 1) is the main element of the prediction, and (4) the future tree density distribution is estimated on the basis of the initial structure, actual growth and mortality of trees in individual size classes. The aim of the research was to develop a size−class growth model to be used for the preparation of a medium−term forecast of natural forest dynamics. The study site is located on the Bukowa Góra Mt in the Roztoczański National Park (SE Poland). For the analyses we took all uneven−aged stands (128 ha in total) composed mostly of silver fir and European beech. The material was collected on 65 permanent sample plots every five years in the period 1991−2011. Trees with the breast height diameter (DBH)8 cm were measured on each sample plot (500 m2), while smaller trees – on three smaller concentric plots. We calculated, separately for fir and beech, the relationship between the mortality of trees and their diameter (fig. 2), the relationship between the diameter increment of trees and their DBH (figs. 3−4), the rate of saplings (h=0.3−1.3 m) growth into the first DBH class (DBH=0.1−1.9 cm). On the basis of these data, we elaborated a size−class growth model that we used to predict the development of timber resources (trees with DBH 8 cm) at 10−year intervals in the period 2001− −2041. In 2011, the predicted average standing volume was lower than the one actually measured. The forecast indicated an increase in the average standing volume (fig. 5), a reduction in the volume of ingrowth (fig. 6), an increase in the proportion of beech in the standing volume and ingrowth (figs. 5 and 7) and the maintenance of a similar density structure (fig. 8) throughout the period 2001−2041. The low accuracy of the prediction after 10 years (in 2011) was caused by the difference between the predicted and actual values of tree growth and mortality in the period 2001−2011.
Źródło:
Sylwan; 2016, 160, 03; 207-218
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ konkurencji na przyrost grubości drzew w wyżynnych lasach mieszanych o złożonej budowie
Effect of competition on the diameter growth of trees in mixed upland forests with complex structure
Autorzy:
Śmigielski, A.
Socha, J.
Maciejewski, Z.
Pach, M.
Powiązania:
https://bibliotekanauki.pl/articles/989022.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Roztoczanski Park Narodowy
drzewostany naturalne
drzewostany mieszane
drzewa lesne
grab
buk
jodla
przyrost drzew
przyrost grubosci
wskazniki konkurencyjnosci
competition indices
natural stands
roztocze national park
Opis:
The aim of this study was to assess the effect of competition on diameter growth of European beech (Fagus sylvatica L.), silver fir (Abies alba Mill.) and European hornbeam (Carpinus betulus L.) in forests with complex structure. For each tree we calculated set of 20 competition indexes in 4 variants for determining the scale of the competitors influence. The use of such a set of indices, allowed to describe accurately the competition between trees in the specific conditions for the particular tree species. Given species belong to the group of shade−tolerant trees. The species composition of the tree stands and their structure are the results of long−lasting natural processes, which is different than in the majority of Polish forests. The empirical material collected in the years 1993 and 2003 in four sample plots of 0.5 ha each located in natural stands of the Roztocze National Park in south−eastern Poland. The relationships between the competition and the growth were analysed using generalized additive models. This method allows to extend of the standard linear model, by taking into account non−linear function of each variable. One of the option of quantifying competition processes is the use of competition indices. The competition situation of an individual tree was described using distance−independ and distance−depend indices. Each of analysed species reacts differently on competition. Among the three analyzed species, the best competition index CI15 explained 48.3% of the variation diameter growth of European beech (tab. 2). The competition index CI3 explained only 26.1% of the variation diameter growth of European hornbeam (tab. 2). It turned out to be the worst result for the described species. The competition index CI14 explained 31.1% of the variation diameter growth of silver fir (tab. 2). Additional use of DBH in the models, increased values of the coefficient of determination, and extended the possibilities to use the developed models.
Źródło:
Sylwan; 2017, 161, 05; 365-378
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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