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Tytuł:
Indicators for modern and recent climate change in the highest mountain areas of Bulgaria
Autorzy:
Gachev, E.
Powiązania:
https://bibliotekanauki.pl/articles/294887.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
natural indicators of climate change
embryonic glacier forms
palaeoclimatolog
Rila Mts.
Pirin Mts.
Opis:
The highest Bulgarian mountains Rila (2,925 m a.s.l.) and Pirin (2,914 m a.s.l.) provide virgin mountain landscapes, intensive natural processes and a sharp sensitivity on natural and human impacts. The present paper focuses on the existing natural indicators for changes in climate during the last few centuries in the areas around the highest peaks Musala (the Rila Mountains) and Vihren (the Pirin Mountains), and the accent is put on the past and present existence of embryonic glacier forms. Dynamics of perennial ice bodies in the Pirin and the newly found fresh moraine ridge on the bottom of the Ledeno ezero Lake (the highest lake in the Rila Mts.) as well as the data from instrumental and historical records suggest a general trend of warming since the first two decades of the 20th century, especially expressed in the last 30 years. Inter-annual size variations of perennial ice bodies are found to be closely related to fluctuations of air temperature. Regional comparative studies show that perennial ice bodies in Bulgarian mountains are less sensitive to slight climate fluctuations than some other similar features in the Carpatho-Balkan area. Proper interpretation of these and future research results requires their incorporation in regional studies within the entire Carpatho-Balkan area.
Źródło:
Landform Analysis; 2009, 10; 33-38
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Applying geomathics to determination of landscape altitudinal zones in the mountains
Autorzy:
Guzik, M.
Skawiński, P.
Powiązania:
https://bibliotekanauki.pl/articles/294851.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
landscape altitudinal zones
geomatics
Tatra Mts.
Opis:
The paper presents a method enabling determination of the extent of landscape zones, based on the criterion of area coverage by vegetation. This method made it possible to objectively determine the extent of landscape zones both in the entire Tatra Mts. and in their particular parts. The altitude, at which dominant type of vegetation changes, is considered to mark the boundary of a landscape zone. Boundaries distinguished in this way in the Tatra Mts. are presently situated at: 1,510 m a.s.l. (forest zone), 1,730 m a.s.l. (subalpine zone), and 1,880 m a.s.l. (alpine zone).
Źródło:
Landform Analysis; 2009, 11; 25-32
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geophysical methods in research of permafrost in the Tatra Mountains and northern Scandinavia
Autorzy:
Dobiński, W.
Powiązania:
https://bibliotekanauki.pl/articles/294889.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
permafrost
geophysics
Tatra Mts.
northern Scandinavia
Opis:
A set of geophysical methods were implemented in the research conducted on permafrost of the Tatra Mountains and the Abisko area, Northern Sweden. Results of geophysical surveys show evidence of permafrost in both areas. Comparative studies on the occurrence of permafrost in the Tatras and in the Abisko area indicate that contemporary active as well as fossil permafrost might occur in both locations. Results of the electric resistivity, electromagnetic, shallow refraction seismic, and ground penetrating radar methods reveal similar results and might be successfully used in indirect research on permafrost in the mountainous regions.
Źródło:
Landform Analysis; 2009, 10; 26-32
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changes of thermal conditions in the Polish Tatra Mountains
Autorzy:
Żmudzka, E.
Powiązania:
https://bibliotekanauki.pl/articles/294625.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
thermal conditions
trend
Polish Tatra Mts.
Opis:
The purpose of the report is to determine trends in thermal conditions in the Polish part of the Tatra Mountains. The study makes use of the data from the weather stations in Zakopane and on Kasprowy Wierch Mt. from the years 1951–2006, and mainly from 1966–2006. Various thermal characteristics were considered. The increase of the rate of upward trend in temperature in the Tatras at the turn of the 21st century, as well as the change of the seasonal distribution of the warming in comparison with the preceding long-term periods, have been documented. In 1966–2006, significant trends in the changes of the mean, maximum and minimum temperatures have been observed in the Tatras in summer (respectively, 0.04, 0.05 and 0.03–0.04 centigrade per annum). Certain symptoms of increase of the thermal continentality have also been observed (increase of the annual amplitude of temperature). Besides, important features of changes in thermal conditions at the turn of the 21st century include an increase in the number of hot days, and even appearance of the very hot days at the foothills of the Tatras, increase of the number of frost days and decrease of the number of ice days in the high mountain part of the Tatras, as well as increase of accumulated heat of the growing season and an increase of daily amplitude of temperature across the entire profile of the Tatras.
Źródło:
Landform Analysis; 2009, 10; 140-146
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Problems in geoecological approach to high-mountain environment (based on studies of relief : vegetation relationships)
Autorzy:
Kozłowska, A.
Rączkowska, Z.
Powiązania:
https://bibliotekanauki.pl/articles/294595.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
high-mountain landscape
relief
vegetation
geoecological aproach
Tatra Mts.
Opis:
The paper discusses the issues associated with the geoecological rendition of high mountains, taking as a basis the authors’ studies of interrelations between relief and vegetation. The fundamental prerequisites for these studies are presented, with emphasis on the fact that the relation between the two elements is indirect and takes place via the intermediary of the habitat. With respect to the scales, both spatial and temporal, applied in the study of landscape, it is established that the majority of relations between vegetation and relief is analysed on the micro-scale, and much less frequently on the meso-scale. Application of areal methods in respective studies provides the possibility of determining the measure of relation between the elements considered. The linear methods (like, e.g., the catena method) allow for grasping the gradient differentiation of the spatial patterns on high mountain slopes. It was established that the main source of problems with landscape representation of high mountains is the mosaic character of the landscape structure. Due to this, even though the interrelations between the elements of the environment – including relief and vegetation – are distinctly visible, they have not been made precise enough with the mathematically defined dependencies, which make development of models of structure and functioning of high mountain slopes more difficult.
Źródło:
Landform Analysis; 2009, 10; 70-76
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Czarny Dunajec River, Poland, as an example of human-induced development tendencies in a mountain river channel
Autorzy:
Krzemień, K.
Powiązania:
https://bibliotekanauki.pl/articles/294346.pdf
Data publikacji:
2003
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
mountain river channels
fluvial processes
human pressure
Western Carpathian Mts.
Opis:
The Czarny Dunajec is a typical river originating in high mountains (the Western Tatras). Over the entire Quaternary era the river laboured carrying material away from the Tatras and depositing it in the form of a typical braided channel at their foot. At the end of the 19'h century, river management projects and quarrying operations located directly in the very channel set off a rejuvenation process that was further accelerated at the end of 1960s. The activities resulted in the damaged several sections in their natural form and considerably deepened the channel. Measures taken to restrict the amount of material entering the Czorsztyn Dam have largely failed. From the geomorphologic and environmental points of view a continued transformation of the Czarny Dunajec river channel should be regarded as highly adverse.
Źródło:
Landform Analysis; 2003, 4; 57-64
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Glacial and periglacial relief on the southern slopes of the Western Tatra Mts. (Slovakia) - the results of the first detailed geomorphological mapping of the Žiarska, Jamnicka, Račkova and Bystra Valleys
Autorzy:
Kłapyta, P.
Powiązania:
https://bibliotekanauki.pl/articles/294354.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
deglaciation
moraine systems
relict rock glaciers
morphostratigraphy
Western Tatra Mts.
Opis:
The article presents the results of the first detailed geomorphological mapping of the Žiarska, Jamnicka, Raekova, and Bystra Valleys, situated on the southern slope of the Western Tatra Mountains. The field work was supplemented by digital topographic as well as statistical analysis of rock glaciers distribution. The author focused on the distribution and morphological features of moraines and rock glaciers. Variability of both sets of deposits strongly reflects topographic influences on debris and snow accumulation. The main factor controlling the geometry of landforms was solar irradiance modified by the influence of the local cirque topography. Two generations of the rock glaciers indicate distinct phases of periglacial conditions during the Late Glacial period.
Źródło:
Landform Analysis; 2009, 10; 50-57
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Concept of landscape horizontal belts in the Polish Tatra Mountains
Autorzy:
Niedźwiecki, J.
Powiązania:
https://bibliotekanauki.pl/articles/294603.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
Tatra Mts.
landscape belts
high mountains
mountain landscap
slope system
Opis:
The history of changes of geoecological belts in the mountains exerts influence on the structure and functioning of the landscape. In many mountain regions, a convergence of two basic altitudinal lines occurs: the contemporary upper timberline and the cold Pleistocene snow line. The Tatra Mts. are an example of such a situation. These lines constitute the border between the high-mountain landscape and the landscape of mid- and low mountains (according to the Polish classification). However, this convergence also marks out the horizontal border across the profile of the valley, which separates the part with completely established high mountain landform complex (with postglacial cirques)from the remaining part of the valley. The montane belt can be also divided into two parts characterized by different landscape structure, due to existence of the influence of catenal processes from the subsystem of high-mountain belt. On these bases, the author introduces the concept of landscape horizontal belts in the mountain landscape of the Polish Tatra Mts., dividing the latter into three functional belts: the typical high-mountain landscape, the transitional landscape, and the typical landscape of mid- and low mountains.
Źródło:
Landform Analysis; 2009, 10; 102-107
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An attempt to assess the modern and the Little Ice Age climatic snowline altitude in the Tatra Mountains
Autorzy:
Zasadni, J.
Kłapyta, P.
Powiązania:
https://bibliotekanauki.pl/articles/294601.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
climatic snowline
temperature-precipitation ELA
Little Ice Age
Tatra Mts.
Opis:
An empirical glacio-climatic relation (Ohmura et al., 1992) and meteorological data (temperature and precipitation) are employed to provide the elevation in the Tatra Mts. climate model, where conditions are suitable for hypothetical glacierisation (temperature-precipitation ELA). During the Little Ice Age (LIA) it is to have been 1.5 centigrade colder than during the warmest decades of the 20th century (Niedźwiedź, 2004); however, some scenarios are used to define precipitation amounts related to the vertical distribution in climate model and temporal variability. The results indicate that during both considered periods - the warmest decades of the 20th century and the coolest period of LIA - the climatic snowline (cSL) was placed in most cases above the highest Tatra Mts. summits and crests. However, its spatial arrangement was unequal. In the vicinity of Kasprowy Wierch, the modern cSL is assessed to be at ca. 2,450-2,650 m a.s.l. and that during LIA at ca. 2,300-2,450 m a.s.l. In the case of Lomnicky Štit (2,634 m) it was at the level of ca. 2,700–2,800 m a.s.l. (modern times) and ca. 2,600–2,700 m a.s.l. (LIA). The discrepancies in the cSL altitude between these two locations can be explained in part by exposition to the prevailing moisture transport and orographically-induced precipitation.
Źródło:
Landform Analysis; 2009, 10; 124-133
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Role of land relief and structure in the formation of peat bogs in mountain areas, as exemplified by the Polish Carpathians
Autorzy:
Łajczak, A.
Powiązania:
https://bibliotekanauki.pl/articles/294695.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
raised bog
Carpathian Mountains
Beskidy Mountains
Tatra Mts.
Orawsko-Nowotarska Basin
Opis:
It has been often argued that the formation of peat bogs in the mountains is predominantly influenced by a humid climate. Although in many mountains precipitation during the vegetation growth season is greater than evaporation, bogs, especially of the raised type, do not cover all gently sloping areas and often develop only within certain landforms. Local hydrological conditions determined by land relief and structure are the most crucial factor in the development of bogs in such areas. Peat bogs of the Polish Carpathian Mountains demonstrate that bogs, irrespective of altitude, develop mainly in concave landforms or below convex morphological recesses, where outcrops of poorly permeable rocks offer numerous low-capacity but stable outflows of groundwater that continuously humidifies the slopes lying below thus supporting the formation of habitats for hydrophilic plants. This research project covered the parts of the Polish Carpathians having the largest number of bogs, thus allowing local-scale analysis of their location in relation to the lithological, geomorphological and hydrogeological properties of the substratum. It is assumed that an assessment of the influence of substratum on the location and formation of peat bogs is only correct when the coverage of the individual mires in the period preceding their anthropogenic degradation is known. Only then is it possible to establish what types of bedrock and which landforms are most favourable for bog formation.
Źródło:
Landform Analysis; 2013, 22; 61-73
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Coarse woody debris in mountain streams and their influence on geomorphology of channels in the Tatra Mts.
Autorzy:
Zielonka, A.
Ciapała, S.
Malina, P.
Piątek, G.
Powiązania:
https://bibliotekanauki.pl/articles/294611.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
dendrochronology
CWD (coarse woody derbis)
stream channel
subalpine forest
Tatra Mts.
Opis:
Dead wood plays important function in the riverine environment. Dead trees lying in stream channels modify the speed of the current and the shape of the channel, thus have a great influence on channel morphology. Coarse woody debris (CWD) exert influence on variation in channel width and gradient as well as promote lateral channel migration and sediment storage. In this paper we study the characteristics of dead wood delivered to two mountain streams, the Waksmundzki Stream and Pyszniański Stream in the Tatra Mts. The inflow of dead trees to the stream channels was determined with the use of dendrochronological methods. In both channels, a similar number of CWD was found – ca. 60 units per 100 m. In the Waskmundzki Stream more logs were aggregated in form of dams than in the Pyszniański Stream. The distribution of diameters, decay classes, and length classes was similar for both streams. Bank erosion is the most common cause of inflow of dead wood to the stream channel. Cross-dating of the moment of death of trees lying in the stream may indicate that inflow of dead wood to the channels is a continuous process. Fragmented remains of dead trees create geomorphological formations like dams and steps, which highly modify the channels.
Źródło:
Landform Analysis; 2009, 10; 134-139
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie metod dendrochronologicznych w badaniach lawin śnieżnych
The dendrochronological methods of snow avalanche investigation
Autorzy:
Kaczka, R. J.
Janecka, K
Lempa, M.
Rączkowska, Z.
Powiązania:
https://bibliotekanauki.pl/articles/294466.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
lawiny śnieżne
dendrochronologia
rekonstrukcja
GIS
Tatry
snow avalanche
dendrochronology
reconstruction
Tatra Mts.
Opis:
Lawiny śnieżne pomimo swojej siły pozostawiają niejednorodny zapis w środowisku. Z tego powodu rekonstrukcja momentu wystąpienia i wielkości lawiny jest zadaniem trudnym. Jednym z pośrednich dowodów ich aktywności są miejsca, gdzie lawiny docierają do lasu pozostawiając swój ślad w skali makro (obniżanie górnej granicy lasu) i mikro (uszkodzenia pojedynczych drzew). Odpowiednio zaadaptowane metody dendrochronologiczne pozwalają datować zdarzenia lawinowe. W wyniku połączenia analiz dendrochronologicznych z innymi metodami badawczymi uzyskujemy wielowymiarowy obraz aktywności lawin w przeszłości. Zastosowanie podstawowych technik dendrochronologicznych do datowania zdarzeń lawinowych zostało omówione na przykładzie wyników badań w Białym Żlebie w Tatrach Wysokich. Opracowana dla tego miejsca rekonstrukcja aktywności lawin obejmuje ponad 100 lat i wskazuje na pięć dużych zdarzeń lawinowych w okresie od 1912 do 2009 roku. Włączenie do analiz technik GIS umożliwiło rozszerzenie rekonstrukcji o elementy przestrzenne, informujące o zasięgu przeszłych zdarzeń.
Despite their strength, snow avalanches leave a very diverse record in the environment. For this reason, the reconstruction of the occurrence, time and magnitude of avalanches is a really demanding task. It can only be performed in places where avalanches reach forests, leaving their marks in the macroscale (lowering the upper timberline) and microscale (damaging individual trees). Appropriately adapted dendrochronological methods allow dating the avalanche events. Combining the dendrochronological analyses with other techniques enables to obtain a multi-dimensional image of avalanche events. The application of the basic dendrogeomorphological techniques is discussed on the example of the results of the research from the Biały Żleb chute located in the High Tatras. The obtained reconstruction of avalanche activity covers more than 100 years and points to five major avalanche events in the period from 1912 to 2009. The employment of GIS techniques allowed to extend the reconstruction by a spatial element indicating the range of the past events.
Źródło:
Landform Analysis; 2015, 28; 15-27
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The spatial patterns of the Tatra high - mountain landscape structure
Autorzy:
Boltižiar, M.
Powiązania:
https://bibliotekanauki.pl/articles/294897.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
high-mountain landscape structure
geomorphic forms and processes
spatial patterns
Tatra Mts.
Opis:
The paper focuses on the identification and classification of spatial patterns in the relation to landforms and geomorphic processes considering the middle-scale and micro-scale of the high-mountain landscape. These determine not only the shape of patches or the character of boundaries, but also the character of fragmentation, the heterogeneity of patches, the gradient and the tendency of patches development. Georelief, especially its spatial morphodynamic attributes, represents relevant phenomena of the landscape which facilitate to understand the scale and hierarchy of the landscape structure. The algorithm of this study is based on the spatial identification of landforms, processes and patterns considering large-scale aerial photographs, a field reconnaissance and the partial classification. The main aim of this paper is to create the classification system of spatial patterns as the physiognomic spatial attributes of the landscape structure mosaic in the high-mountain areas. The genesis of spatial structure patterns and their formation enables us to understand better the origin of the high-mountain landscape structure, its function and contents in this environment. Such a classification can be regarded as a basis for the quantitative statistic analyses of the landscape structure and for the detailed research of spatial patterns.
Źródło:
Landform Analysis; 2009, 10; 11-17
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geomorfometria granitowej części Karkonoszy
Geomorphometry of granitic part of Karkonosze Mts.
Autorzy:
Kasprzak, M.
Traczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/295050.pdf
Data publikacji:
2010
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
geomorfometria
GIS
masyw granitowy
Karkonosze
Sudety
geomorphometry
granite massif
Karkonosze Mts.
Sudetes
Opis:
W pracy dokonano analizy morfometrycznej rzeźby granitowej części Karkonoszy. W obszarze zainteresowania znalazły się główne jednostki geomorfologiczne masywu: Grzbiet Główny, Karkonoski Padół Śródgórski i Pogórze Karkonoszy. Analizę prowadzoną przy użyciu programów GIS (GRASS GIS, MicroDEM, SAGA GIS, ILWIS) oparto na cyfrowym modelu wysokościowym (DEM). Wybrano najpopularniejsze wtórne parametry morfometryczne powstałe w efekcie przekształcenia DEM oraz algorytmy klasyfikujące formy terenu: topographic grain (lineamenty rzeźby), curvature (krzywizna), openness (otwarcie), topographic wetness Index TWI (topograficzny wskaźnik wilgotności), topographic position index TPI (topograficzny indeks pozycji), generic landforms. Wyniki przeprowadzonych analiz pozwalają na wydzielenie na badanym obszarze terenów o odmiennych właściwościach, co do tej pory nie było w literaturze przedmiotu odnotowane. Można stwierdzić, że w literaturze geomorfologicznej regionu nie podkreślano dominacji prostego kształtu stoków i przeceniano w udziale ogólnej powierzchni masywu zrównania stokowe. Obraz Padołu i Pogórza na wynikowych mapach morfologicznych ukazał zmieniający się z zachodu w kierunku wschodnim układ obniżeńi kulminacji. W strefie Pogórza doskonale zaznaczył się kratowy układ obniżeńograniczających różnoskalowe elewacje morfologiczne. Spośród zastosowanych w opracowaniu parametrów najpełniejszy obraz geomorfologii Karkonoszy dała procedura TPI. Wynik analizy z zastosowaniem TWI potwierdza wcześniejsze tezy wskazujące na koncentrację wilgoci w strefie dolnych załomów stoku. Tym samym jest to pośredni dowód na słuszność poglądów odnoszących się do zróżnicowania stref głębokiego wietrzenia chemicznego masywu.
The paper presents results of morphometric analysis of granitic part of the Karkonosze Mts. Main geomorphological units of Karkonosze Mts. - Main Ridge, Karkonosze Intramontane Trough and Karkonosze Foothills - were in the study area. Analysis was carried out using GIS software (GRASS GIS, MicroDEM, Saga GIS, ILWIS) and digital elevation model (DEM). The most popular secondary geomorphometrical parameters were chosen and algorithms classifying terrain forms: topographic grain, curvature, openness, topographic wetness Index TWI, topographic position index TPI, generic landforms. Results of analysis allow for identification of unit/zones in studied area with different properties, as for this time it was not recorded in a literature of a subject. It is possible to state that until now in geomorphological literature of the region a dominance of straight shape of slopes was not underlined and in the participation of the general area of the massif planar surfaces were overrated. An image of Karkonosze Intramontane Trough and Karkonosze Foothills on final morphological maps showed an arrangement changing from the west to the east of linear depressions and elevations/peaks. In the zone of Karkonosze Foothills rectangular shape of valleys was indicated. Selected from among of parameters applied in the study TPI procedure gave the fullest information of the Karkonosze Mts. morphology. Result of the analysis with TWI application was confirming earlier theses pointing at a concentration of wetness in a zone of bottom edge of slopes. It is indirect evidence for diversifying zones of deep chemical weathering in granitic massif.
Źródło:
Landform Analysis; 2010, 13; 33-46
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changes in the spruce forests of the Polish Tatra Mts. during the last 80 years
Autorzy:
Kozłowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/294585.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
spruce forests
Polish Tatra Mts.
floristic changes during 80 years
vegetation typology
Opis:
On the basis of the historical (dating from the 1920s) and contemporary phytosociological relevés, taken in the spruce forests of the Polish Tatra Mts., the changes were determined that took place in these forests. This area had been for centuries under the influence of human economic activities, mainly pasturing and wood extraction, and then protected in the Tatra National Park. These changes differ according to the altitudinal vegetation belts. In the coniferous forests of the upper montane belt, the changes due to wind breaks or tree stand ageing did not lead to transition to other forest associations. A tendency can yet be noticed of losing a part of the species combinations characteristic for the associations or higher syntaxonomic units, which might be linked with the stopping of grazing in the forests and development of the undergrowth of tall herb character. The association of the fir-and-spruce forests in the lower montane belt displayed much bigger changes. There was an increase of the role of species of the deciduous forests, while the role of the coniferous forest species was limited in the studied patches, which clearly indicates the evolution of the forests towards the beech woods, typical for the lower montane belt. This means a progressing limitation of the spruce forests in the limestone Tatras to the advantage of return of the beech woodsdominated there in older time.
Źródło:
Landform Analysis; 2009, 10; 64-69
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 21

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