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EN
Forest communities of the “Bór” reserve near Głogów Małopolski on the Kolbuszowa Plateau. Fragmenta Floristica et Geobotanica Polonica 10: 93–117. Kraków. PL ISSN 1640 629X. ABSTRACT: This study describes the forest communities of the “Bór” reserve situated in the northern part of the Kolbuszowa Plateau. The reserve protects old part of the Sandomierz Forest. The investigation was conducted using Braun Blanquet method. Six forest associations and four forest secondary communities were distinguished. Leucobryo Pinetum, Querco roboris Pinetum, Tilio cordatae Carpinetum betuli, Fraxino Alnetum are characterized fairly good naturalness and Ribeso nigri Alnetum, Luzulo pilosae Fagetum are degenerate associations. This paper presents the list of interesting and legally protected species and real vegetation maps.
Sylwan
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2015
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tom 159
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nr 01
EN
Stand characteristics are important factors influencing the biodiversity of the herbaceous plants that play important roles in the functioning and shaping the structure of the forest. This study investigates the relationship between the characteristics of the tree layer and the diversity of the herbaceous layer in the semi−natural remnants of the former Sandomierz Forest (Kolbu− szowa Plateau, SE Poland). The study was conducted in ‘Las Klasztorny' reserve on 40 circular plots (0.05 ha) centered on the nodes of a grid covering the area of the reserve. Each plot was analyzed in terms of the com− position of the tree stand, and the height and diameter at the breast height (DBH) of live trees. In order to analyze species diversity in the herbaceous layer, the incidence of vascular plant species was recorded on 24 surfaces (1×1 m) along a transect passing through the center of each plots. For each plot the Shannon index of species diversity was calculated. Results were ana− lyzed by multivariate PCA method. Average tree density in the reserve was 741 trees/ha and the average basal area was 33.4 m2/ha. Tree stands consisted mainly of Pinus sylvestris, Abies alba, Fagus sylvatica, Quercus robur and Carpinus betulus. Fir and pine were the most frequent. Pine had the largest share in the total basal area. The first and second PCA axis demonstrated high correlation of herbaceous plant diversity with tree characteristics (r=0.95 and r=0.71, respectively). The first axis showed the greatest negative relation with beech basal area proportion, and positive dependence on oak density and share of pine in basal area on the research plots. The second gradient showed a strong positive correlation with oak basal area proportion, and negative with trees density. Correlation analysis of tree stand characteristics and the herbaceous layer confirmed the nega− tive impact of beech on herbaceous layer diversity. It also indicated a positive dependence of the herbaceous layer species diversity on species richness in the tree layer, oak density and average DBH. The results indicated a positive dependence of herbaceous plant diversity on the development of the tree stand. The observed greater diversity of herbaceous plants in the old growth forests with diverse spatial and species structures indicates the high importance of the old stands in maintaining forest biodiversity.
EN
The species richness pattern exhibits a strong altitudinal dependence which may be altered under the influence of land use-related disturbances. The Beskid Niski Mountains are part of the northern Carpathian Mountains – an area that saw a large-scale relocation of certain ethnic groups after World War II. The subsequent rapid decline in the human population level was the main factor shaping the environment in this area, and contributed to a rapid increase in the forest area, also introducing changes in its functioning. The increase in the forest area was not evenly distributed, showing the largest values at higher locations. The present study is focused on changes in the species richness of the Carpathian fir forests along the altitudinal gradient, in relation to socio-economical transformations. The changes indicated an overall decrease in species richness, especially at higher locations. The main reason for these changes seemed to be forest management-related, causing an increase in the share of blackberry, fern and grass species, as well as the disappearance of species diagnostic of the ancient forests, which led to homogenization of vegetation. The increase in the mountain forest area has proven to be insufficient to secure the species richness of forests.
PL
Rośliny w trakcie ewolucji dostosowały się do siedlisk, w których obecnie bytują. W wyniku wytworzenia różnorodnych mechanizmów na poziomie anatomiczno-fizjologicznym oraz molekularnym potrafią one reagować na naturalne zaburzenia występujące w środowisku. W ostatnich dziesięcioleciach obserwuje się jednak intensywne, kierunkowe zmiany warunków środowiskowych spowodowane działalnością człowieka. W obliczu tych zmian duża część roślin staje przed poważnym problemem związanym z przetrwaniem w granicach ich naturalnego zasięgu, z powodu zbyt małej tolerancji na zachodzące zmiany. W konsekwencji, globalne zmiany środowiska w dużym stopniu przyczyniają się do gwałtownego spadku bioróżnorodności ekosystemów lądowych w skali kuli ziemskiej. Artykuł przedstawia mechanizmy dostosowujące rośliny do głównych zmian warunków środowiskowych takich jak: susza, spadek odczynu gleby oraz wzrost temperatury na Ziemi.
EN
Plants are organisms deprived of the ability to actively move. The adaptations they created during the evolution allow them to survive adverse habitat changes. The recent decline in the diversity of plants on the globe is caused by changes in the environment too quickly. These processes lead to the extinction of plant populations without giving them time to create appropriate adaptations. In connection with the observed decline in biodiversity, it seems that research into the possibilities of adaptation of plants to changes in habitat conditions is extremely important for understanding the functioning of ecosystems and the protection of endangered species. The article focuses on the main mechanisms adapting plants to environmental changes such as: drought, decrease in soil pH and increase in temperature on the Earth.
11
Content available remote Zrównoważony rozwój w leśnictwie
63%
PL
Lasy w Polsce stanowią blisko 30% powierzchni kraju. Jest to obszar pełniący różnorodne funkcje biotyczne, ochronne, produkcyjne i reprodukcyjne. Artykuł relacjonuje rozumienie koncepcji zrównoważonego rozwoju w leśnictwie. Przedstawia model wielofunkcyjnej gospodarki leśnej zapewniającej trwałe odtwarzanie lasów, a także sposoby planowania działań w lesie.
EN
Forests in Poland constitute nearly 30% of the country's area. It is an area that performs a variety of biotic, protective, production and reproductive functions. This article introduces the concept of sustainable development in forestry. It presents a model of multifunctional forest management ensuring sustainable forest reproduction as well as ways of planning activities in the forest.
EN
Complete discontinuation of agricultural use of subalpine meadows in the Western Bieszczady, which dates back to 1940s, started the process of their overgrowing with brushwood. Based on available cartographic material the following features were analysed: changes in the area occupied by brushwood on Mała Rawka and Wielka Rawka subalpine meadows, their growth rate and the relationship between the overgrowth process and the previous manner of agricultural use as well as topographic conditions throughout last 30 years. In that period the brushwood on Mała Rawka meadow (in the past the area had been reaped) was characterised by a small initial area (in the 1980s), a significant growth rate of the area and its relation to the slopes exposed to N, NE and E, the zone adjacent to the timber line and steeper slopes. In 1980 on Wielka Rawka meadow (previously used as a pasture) a high share of brushwood was found (about 25% of the meadow area), whose distribution was related only to the slopes of N, NE and E exposure. In subsequent years the growth rate was low. The results indicate a progressing process of overgrowing of subalpine meadows by brushwood. The brushwood expansion is related to discontinuation of agricultural use of the meadows and its course depends on the earlier regime of cultivation. The pattern of brushwood distribution also depends on altitude, exposure and the grade of slopes. Those relations result from the expansion of the rowan tree, dominating in the brushwood, also climatic conditions and accessibility of the ground.
EN
During the study carried out between 2004 and 2008 in the Eastern Beskidy beech forests 78 aphid species were recorded. Among those species five ecological groups of aphids were further distinguished. Of those five groups the highest percentage share was recorded for the forest, monophagous, and monoecious species.
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