Temat: Fragmentation - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Forest fragmentation in the Tatra Region in the period 2000 -2006
Autorzy:: Kopecka, M.
Novaček, J.
Powiązania:: https://bibliotekanauki.pl/articles/294350.pdf
Data publikacji:: 2009
Wydawca:: Stowarzyszenie Geomorfologów Polskich
Tematy:: forest fragmentation
CORINE Land Cover
landscape change
windstorm calamity
Tatra region
Opis:: The calamity windstorm in November 2004 caused dramatic changes of land cover in the Tatra Mountains. The bora have destroyed then more than 12,000 ha of forest and principally affected the habitat structure in the Tatra National Park. The aim of this contribution is to quantify changes in forest fragmentation in 2000 and 2006. We present forest fragmentation maps related to the years 2000 and 2006. The CORINE Land Cover data layers CLC 2000 and CLC 2006 converted to raster format were used as the input data in the process of forest fragmentation assessment. Forest pixels were classified according to fragmentation indices measured within the surrounding landscape as the forest core, forest patch, forest edge, and perforated forest. Decrease of the compact forest areas (forest core) by about 9% was recorded. On the other side, increased percentage of disrupted forest areas was observed. Decrease of the area of the CLC forest classes (classes 311, 312 and 313) on land cover maps from 2000 and 2006 was connected with an increased number of transitional woodland/shrubs polygons (CLC class 324). These results suggest a temporary fragmentation with possible forest regeneration. On the other hand, forest destruction in the National Park facilitated the development of travel and tourism (new hotels, ski parks, etc.). An increased number of construction sites (CLC class 133) indicate that an urban sprawl associated with a permanent forest fragmentation can be also expected in the future.
Źródło:: Landform Analysis; 2009, 10; 58-63
1429-799X
Pojawia się w:: Landform Analysis
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Kwitnący bluszcz pospolity hedera helix L. w lasach okolic Szadku
Flower Ivy Hedera helix in the forests surrounding Szadek
Autorzy:: Kucharski, Leszek
Chmielewski, Błażej
Powiązania:: https://bibliotekanauki.pl/articles/19064487.pdf
Data publikacji:: 2016-12-30
Wydawca:: Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:: Hedera helix
zakwitanie
zmiany klimatu
fragmentacja lasu
blossoming
climate change
forest fragmentation
Opis:: W lasach gminy Szadek i terenów przyległych stwierdzono 9 stanowisk kwitnącego i owocującego bluszczu pospolitego. Odnotowano na nich 195 kwitnących okazów tego gatunku. Związane są one z siedliskami średnio żyznymi i żyznymi. Najczęściej notowano je w grądach, rzadziej w łęgach. Podporami dla kwitnących okazów Hedera helix najczęściej są: Alnus glutinosa, Quercus robur oraz Pinus sylvestris. Większość stanowisk związana jest z brzegami lasów lub leśnymi drogami. Głównymi czynnikami stymulującymi zakwitanie bluszczu są „ocieplanie się” klimatu oraz fragmentacja powierzchni leśnych.
In 9 sites of Hedera helix occurrence were recorded in the forests surrounding area Szadek. The species grows mainly on the fresh-mixed and – fresh forest site types. 195 flowering and fruiting specimens were found. The most frequent support for Hedera helix offer such tree species as black alder Alnus glutinosa, common oak Quercus robur and Scots pine Pinus sylvestris. Flowering specimens of the climber are found growing at forest edges, in degraded communities of mixed linden-oak- and -riparian forests as well as in the fringes of gaps in forest stands under reconstruction. The dispersal of Hedera helix in forests is attributed to both the rise in annual average temperatures and, in particular, higher average temperatures in winter months, and to the fragmentation of forest.
Źródło:: Biuletyn Szadkowski; 2016, 16; 337-348
1643-0700
Pojawia się w:: Biuletyn Szadkowski
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Detecting and Restoring Gaps Among Forest Patches: AN Achievable and Replicable Proposal to Boost the Landscape Connectivity
Autorzy:: Bortoleto, Ludmila Araujo
Rodgers, John
da Silva, Alexandre Marko
Powiązania:: https://bibliotekanauki.pl/articles/27314778.pdf
Data publikacji:: 2022
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: ecological connectivity
wildlife corridors
forest fragmentation
łączność ekologiczna
korytarze dla dzikiej przyrody
fragmentacja lasów
Opis:: It is well known that one of the main impacts caused by land cover change is the process of forest fragmentation. Connecting the remaining fragments is always an exercise for technicians and academics, and even corridors of remaining vegetation usually present places of forest discontinuity, lacking connection strategies for the corridor to gain a real function. In this paper, we applied a model structured to identify priority locals to implement connectors. We used a GIS package and a digital, georeferenced satellite image. We complemented the project by surveying a database through a drone-based field survey. The integration of data revealed that for our studied area (Sorocaba, SP Brazil) 42.5% need assisted restoration. The mapping also revealed the existence of 25 forest fragments larger than 50 ha, arranged chiefly in one single corridor but disconnected from each other. Hence, through the application of the model, we could localize nine strategic locations in distances as short as possible among the fragments, feasible to implement a connector with the economy of resources and expect satisfactory performance in ecological terms. The database generated by the drone-based survey helped us to assert the effectiveness of the model in choosing areas that require assisted restoration to reestablish the connection of the landscape.
Źródło:: Civil and Environmental Engineering Reports; 2022, 32, 3; 62--84
2080-5187
2450-8594
Pojawia się w:: Civil and Environmental Engineering Reports
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Effect of the coniferous forest - grassland edge on ground vegetation in the mixed European forest zone, Lithuania
Autorzy:: Marozas, V.
Powiązania:: https://bibliotekanauki.pl/articles/41375.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:: coniferous forest
grassland
forest edge
ground vegetation
mixed forest
species richness
forest fragmentation
Europe
Lithuania
Opis:: The objective of this study was to estimate the edge effect on the species richness in agriculturally maintained forest-grassland boundaries of coniferous forest and to determine how species respond to a forest edge. We hypothesised that species number, cover of herbs and mosses is higher in the edge, and species penetrates from nearby grasslands into forest interior. The study was conducted in the Southwestern Lithuania. The edge effect on overall herbaceous species composition of coniferous forests was evaluated by Canonical Correspondence Analysis. The species richness of herbs and mosses in the coniferous forest was highest in the forest edge and declined towards interior. The highest decrease in the number of species occurred within 0 to 5 m to the edge. The highest cover of herbs and mosses was in the forest edge and decreased towards the forest interior. CCA biplot showed a good correlation of overall species composition and the distance to the forest edge. Distribution of species along edge to interior gradient depended on the species response to different ecological factors. Ellenberg value of light was higher in the edge. Ellenberg value of nitrogen was higher in the forest interior.
Źródło:: Dendrobiology; 2014, 71
1641-1307
Pojawia się w:: Dendrobiology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Trwałość struktury krajobrazu w obrębie obszarów leśnych dawnej prowincji – Nowa Marchia
Persistence of landscape structure on forest areas of former new March Province
Autorzy:: Pieńkowski, P.
Kupiec, M.
Powiązania:: https://bibliotekanauki.pl/articles/88228.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Geograficzne
Tematy:: krajobraz kulturowy
fragmentacja lasów
użytkowanie terenu
Nowa Marchia
cultural landscape
forest fragmentation
land use changes
Neumark
Opis:: W pracy przedstawiono specyfikę fragmentacji płatów leśnych na obszarze dawnej prowincji Nowa Marchia, związaną głównie ze średniowiecznym osadnictwem z drugiej poł. XIII w. W obrębie dużych zwartych kompleksów leśnych tego obszaru występują nadal stosunkowo równomiernie rozmieszczone małe bezleśne enklawy wiejskie (140 – 800 ha). Ich lokalizację i powierzchnię scharakteryzowano, wykorzystując współczesne i archiwalne materiały kartograficzne. Stwierdzono, że pomimo wielowiekowej tendencji do przejmowania lasów pod użytkowanie rolnicze tereny bezleśne otaczające wsie tego obszaru nie podlegały większym zmianom. W XIX i XX w. granice przyległych do wsi obszarów bezleśnych nie zmieniły się, a specyficzna fragmentacja związana z osadnictwem wiejskim, która miała miejsce przed prawie ośmiuset laty, jest nadal widoczna i wpływa na strukturę użytkowania, stanowiąc wielowiekowe świadectwo przeobrażeń krajobrazu kulturowego.
The paper presents the fragmentation processes of forest patches in the area of the historical New March province, closely associated with the medieval colonization period from the second half of the thirteenth century. Within the large and dense forests of the research area, the small, deforested rural enclaves areas (140-800 ha) are nowadays regularly distributed. Its specific arrangement was characterized basing on contemporary and archival cartographic materials. It was found that, despite the trend observed over the years (the area of forests being taken over by agriculture land use), the deforested areas surrounding villages were not subject to major changes. In the analysis based on cartographic materials from 18-20th c., the boundaries of clearings have not significantly changed. The specific fragmentation type associated with the medieval rural settlement system, which took place almost eight hundred years ago, is still readable and affects the structure of the landscape, acting as a centuries-old witness of transformation of the cultural landscape.
Źródło:: Prace Komisji Krajobrazu Kulturowego; 2015, 28; 27-34
1896-1460
2391-5293
Pojawia się w:: Prace Komisji Krajobrazu Kulturowego
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Ocena fragmentacji lasów Pomorza Zachodniego pomiędzy XV a XX wiekiem
Evaluation of the forest cover fragmentation in Western Pomerania between the 15th and 20th century
Autorzy:: Pieńkowski, P.
Powiązania:: https://bibliotekanauki.pl/articles/989791.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
lasy
fragmentacja lasu
spadek lesistosci
Pomorze Zachodnie
wiek XV-XX
forest fragmentation
land use changes
landscape metrics
Opis:: The paper analyzes the changes of forest fragmentation in the Western Pomerania region (NW Poland). The analysis was carried out basing on maps from 16th and 18th century as well as 1930s, when the forest cover in the studied area was the lowest. The historical area of forests was assessed on the basis on Hartnack utilization maps. The analysis of numerical maps was carried out in the GUIDOS program, which enables to evaluate the fragmentation of the forests through Morphological Spatial Pattern Analysis (MSPA) that describes the geometry of patches and their interconnectivity. The program calculated the forest areas classified for the seven categories according to their functions in the landscape (MSPA classes). In the 15th century the forests coverage was around 52.5%. There was a significant loss of forest area between the 16th and 18th century, and in the 18th century they occupied 24.7% of the researched area. Because of the economic changes in the country that took place after the World War II, the forest area in Pomerania increased to 33.7%. It was found that changes in the forest area in the examined period resulted in a decrease in the area classified as forest interior (CORE) and an increase in the boundary area (EDGE). Taking into account the equidistant of 1 km², the area occupied by the core patches dropped in the analysed period from 59.9% to 35.6%. At the same time the spatial isolation of many patches increased, which was reflected in an increase in the area classified as ‘islands' (ISLET). Their share in relation to the entire forest area increased from 4.4% to 23.6%. This could be particularly seen in the area of Pyrzycko−Stargardzka Plain and Choszczno Lakeland, where in the 1930s the so−called forest islands constituted the entire forest area of these mesoregions. The MSPA analysis enabled to specify forest patches classes, which can be useful for landscape characterization, including the patch and corridor model. The fragmentation of forests can be objectively assessed using GUIDOS and it can make the output results obtained in GIS programs complete.
Źródło:: Sylwan; 2015, 159, 07; 610-616
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Gospodarka łowiecka i ostatnie carskie polowania w Puszczy Białowieskiej (1912-1913) w relacji Mitrofana Golenki
Game management and the last imperial hunts in Bialowieza Primeval Forest [1912-1913] in the report of Mitrofan Golenko
Autorzy:: Daszkiewicz, P.
Jędrzejewska, B.
Samojlik, T.
Bańka, B.
Powiązania:: https://bibliotekanauki.pl/articles/1013091.pdf
Data publikacji:: 2008
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lowiectwo
historia
gospodarka lowiecka
lesnictwo
Puszcza Bialowieska
polowania carskie
environmental history
monarchical hunts
forest fragmentation
alien species introductions
Opis:: The paper presents Polish translation of the article by Mitrofan Golenko (originally published in 1935) reporting the last imperial hunts that Russian tsar and his family held in Białowieża Primeval Forest in 1912−1913. The article gives information on the hunting techniques and organisation of monarchical hunts in the early 20th century.
Źródło:: Sylwan; 2008, 152, 12; 47-59
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Drzewostany przejęte z Państwowego Funduszu Ziemi – stan i problemy zagospodarowania
Forest stands acquired from the State Land Fund – the condition and management problems
Autorzy:: Kędziora, W.
Orzechowski, M.
Wójcik, R.
Wrzosek, E.
Borecki, T.
Powiązania:: https://bibliotekanauki.pl/articles/985718.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
lasy prywatne
grunty lesne
przejmowanie gruntow
zagospodarowanie lasu
fragmentacja lasu
Nadlesnictwo Siedlce
Panstwowy Fundusz Ziemi
private forests
land transfer
forest fragmentation
Opis:: In this paper, we present problems with the management of the forests acquired by the State Forests from the State Land Fund. This was particularly an issue in forest districts with a significant share of private forests, e.g. eastern part of Poland. The problem becomes more and more valid because of the latest amendment of the Forest Act in 2016. It gives the State Forests the right of the first purchase of private forests attributed to sale. They may receive forest stands that will generate specific economic problems related to care, conservation, felling maintenance, etc. These are mostly stands with typical features of private forests, resulting from abandoning economic operations, selective acquisition, as well as from the size, shape and neighbourhood of the plots. This study presents the characteristics of almost 2,000 tree stands acquired from the State Land Fund between 1992−2016 by the Siedlce Forest District (SFD), which is a part of the Regional Directorate of the State Forests in Warsaw. SFD has low forest cover (18%), a strong fragmentation of forest complexes and a very large share of private forests (over 75%). The analysis was based primarily on the descriptions of forest stands and the quantitative and qualitative characteristics, presenting at the same time the problems that SFD has with conducting rational forest management in acquired plots. The current status of the forests transferred from the State Land Fund was assessed as unsatisfactory. The main problems in local conditions are: (i) inadequate fixation in acquired parcels next to private forests (difficulty in locating treatments and custody over the State property), (ii) depleted tree stands, (iii) inadequate parcels (too narrow) and (iv) complications related to co−ownership of parts seized plots. The need to carry out joint−assembly works (mainly land consolidation) or to introduce land communities that would facilitate the management of these forests was demonstrated.
Źródło:: Sylwan; 2019, 163, 08; 665-674
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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