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Wyszukujesz frazę "urban forests" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Stan i problemy zagospodarowania lasów w miastach województwa mazowieckiego
The current state of forest management in cities and associated problems in the Mazowieckie Province
Autorzy:
Młynarski, W.
Kaliszewski, A.
Powiązania:
https://bibliotekanauki.pl/articles/1317901.pdf
Data publikacji:
2013
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
lasy miejskie
lasy komunalne
ochrona lasu
zagospodarowanie lasu
zagospodarowanie rekreacyjne
miasta
woj.mazowieckie
urban forests
urbanised areas
communal forests
private forests
Opis:
The article presents research on the management and supervision of forests located within cities in the Mazowieckie Province. The information was obtained from questionnaires sent to all 85 city authorities in the province. The questions were related to organization and supervision of forests, forest management and protection, recreational management and financing of forests, as well as main problems associated with the management of urban forests. The research indicated that forests, which altogether cover more than 10% of city area, have a very important function, despite the forest area per resident being very small. The difficulties in forest management may arise due to their highly fragmented distribution as well as the mixture of many different types of forest owners. Moreover, communal forests in the province's smaller towns lack proper management and protection structures and lack recreational facilities as local infrastructure is poorly developed. These sort of activities are conducted only in larger municipalities. Most of the non-state owned forests within cities have simplified forest management plans, which counts as a big plus for the Mazowieckie Province when considered in the context of the whole country. Certain measures should be taken to improve the condition of urban forests in the Mazowieckie Province, and serve to preserve and protection these forests. It is fundamental that city governments should cooperate with as wide as possible a circle of interested parties, to undertake common activities in forests of various ownership types located within each given urban area. Additionally, all feasible sources of financing should be considered.
Źródło:
Leśne Prace Badawcze; 2013, 74, 4; 315-321
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Florystyczne i fitocenotyczne wskaźniki stanu zachowania lasów zalewowych w miejskiej dolinie rzecznej
Flotistic and phytocenotic indicators of the conditions of riparian forests in the urban river valley
Autorzy:
Stefańska-Krzaczek, E.
Podgrudna, K.
Powiązania:
https://bibliotekanauki.pl/articles/989701.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
miasta
doliny rzeczne
lasy legowe
stan zachowania
flora
bogactwo gatunkowe
zbiorowiska lesne
zbiorowiska roslinne
zespol Ficario-Ulmetum minoris
Las Pilczycki
warunki siedliskowe
urban forests
disturbed forest
ficario−ulmetum minoris
hydrotechnical constructions
Opis:
Urban river valleys are exposed to strong anthropogenic pressure, but despite these distortions they provide important habitats in urban areas. Not embanked forests are particularly valuable in urban river valleys as they represent fragments of natural vegetation in a highly changed environment. The study assesses the flora and structure of forest communities in a riparian urban forest complex that is under the direct influence of river water. Las Pilczycki Forest in Wrocław (SW Poland) is such a riparian forest island. We analysed the species richness and composition in terms of the phytocoenoses variability and their syntaxonomic classification. We also investigated if the vegetation can indicate a spatial differentiation in habitat conditions. Floristic and phytosociological data were collected from 70 circular plots (100 m&suo2; each) located in a grid. A total of 81 species were recorded, with a mean of 21 species per plot. Most frequent were: Acer campestre, Acer platanoides, Anemone nemorosa, Ficaria verna, Fraxinus excelsior, Galium aparine, Geum urbanum, Impatiens parviflora and Sambucus nigra. In biological spectrum the most numerous were hemicryptophytes, megaphanerophytes and geophytes. The number of alien species was minor (9% of the flora). The most frequent anthropophyte was Impatiens parviflora. Soil moisture, acidity and fertility indices exhibited spatial correlations and they were higher in the western part of the forest. The moisture index was also higher in the northern part. Species richness ranged from 13 to 32 (with a mean of 21 species). Two forms of Ficario−Ulmetum minoris were identified: with Galanthus nivalis and with Tilia cordata. The first was a well−structured riparian community, while the latter one represented the drained floodplain forest. Vegetation units are spatially separated, in the western part of the forest prevails form with Galanthus nivalis, while in the east – with Tilia cordata. In isolated alluvial forests of urban area local site conditions are crucial for the vegetation patches, because of the distortion of river valleys. The absence of flood embankments is not a sufficient condition for maintaining proper structure of riparian forests.
Źródło:
Sylwan; 2015, 159, 01; 82-88
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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