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    Wyświetlanie 1-5 z 5
    Tytuł:
    Zasady kształtowania lasów ochronnych miast
    Principles of management of urban protection forests
    Autorzy:
    Wołkowycki, Dan
    Powiązania:
    https://bibliotekanauki.pl/chapters/32083889.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    forest management
    protection forest
    urban forestry
    Opis:
    The article discusses the project of good practices for the manager of the urban protection forest, i.e. a model and universal set of protection and management guidelines necessary for the proper shaping of forests in a city. The set of guidelines proposed as the Chart of the Urban Protection Forests includes: shaping multigenerational tree stands; a gradual and spread over time succession of tree generations; maintaining old-growth forests and biocenotic trees in the largest possible number, on the largest available area; the continuous presence of older and middle-aged trees in every part of the forest; resignation from clear-cutting in renewing of tree-stands; promoting and making full use of natural regeneration of tree-stands; passive protection of waterside and wetland forests; active protection of natural diversity as needed; shaping and reconstruction of tree-stands, especially in the habitats of pine and mixed forests; using sanitary pruning when necessary to maintain the durability of tree-stands; complete abandonment of plowing in forest regeneration; zoning; designation of restricted animal sanctuaries; participation and co-responsibility of the society. The introduction of the proposals contained in the Chart of the Urban Protection Forests, at least in part of the protection forests in the cities, could certainly contribute to increasing social acceptance for forest management and avoiding unnecessary conflicts around urban and suburban forests.
    Źródło:
    Lasy przyszłości. Wyzwania współczesnego leśnictwa; 157-174
    9788367185462
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of Alnus subcordata for urban environments through assessment of drought and flooding tolerance
    Autorzy:
    Sjöman, H.
    Levinsson, A.
    Emilsson, T.
    Ibrahimova, A.
    Alizade, V.
    Douglas, P.
    Wiström, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/2078229.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    climate change
    ecosystem services
    urban forestry
    stress tolerance
    adventitious roots
    Opis:
    The urban environment is stressful and trees experience multiple stresses, including drought, flooding, and extreme heat, all of which are likely to increase under future climate warming and increasing urbanisation. In the selection of tree species to maximise ecosystem services, tolerance to site characteristics such as flooding and severe drought is of critical importance. This study evaluated the suitability of a rare species, Alnus subcordata C.A. Mey (Caucasian alder) from the Hyrcanian forests of southern Azerbaijan, for its functionality as an urban tree. A total of 48 pot-grown, two-year-old saplings of A. subcordata were tested in a greenhouse experiment using a complete randomised block design. Each block contained four replicates of three treatments (waterlogging, drought, control), with 16 plants per treatment. Height differences between treatments were measured, and water status was estimated by determination of midday leaf water potential (ΨL) and stomatal conductance (gs ). To estimate drought tolerance reaction in the treatments, leaf water potential at turgor loss (ΨP0) was used together with broken-stick modelling of water status over time. There was a significant difference in tree height between the different treatments. In the drought treatment, A. subcordata plants showed no height increase, while plants in both the waterlogged and control treatments increased in height during the nine-week experiment. Over 63 days of flooding, plant water status was slightly more negative in the waterlogging treatment, but did not deviate essentially from the control. In the drought treatment, plant water status rapidly deviated from the control. There was a significant difference in ΨP0 between treatments, with drought-treated plants showing the lowest value (−2.31 MPa). This study demonstrated that A. subcordata has limited tolerance to drought and seems to rely more on water loss-avoiding strategies. However, the species may be usable at periodically waterlogged sites, due to its high tolerance to flooding. It could therefore be recommended for wet urban environments and stormwater management facilities, for which reliable guidance on suitable trees is currently lacking.
    Źródło:
    Dendrobiology; 2021, 85; 39-50
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bilans martwego drewna w rezerwacie "Polesie Konstantynowskie"
    Balance of dead wood in the 'Polesie Konstantynowskie' nature reserve (central Poland)
    Autorzy:
    Pawicka, K.
    Woziwoda, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/973946.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    rezerwaty przyrody
    rezerwat Polesie Konstantynowskie
    drewno martwe
    drewno olszowe
    olsza czarna
    Alnus glutinosa
    drewno brzozowe
    brzoza brodawkowata
    Betula pendula
    drewno grabowe
    grab pospolity
    Carpinus betulus
    drewno jesionowe
    Fraxinus excelsior
    leśnictwo
    stopień rozkładu drewna
    jesion wyniosły
    coarse woody debris
    standing dead trees
    decay class
    urban forestry
    Opis:
    Dead wood in the city parks is removed for safety and aesthetic reasons. ‘Polesie Konstantynowskie’ nature reserve (9.8 ha) located in the western part of Łódź is an exception. In this reserve dead wood is left for natural decomposition. So far in this reserve research was conducted on the vascular flora and stand structure only, but the amount of wood was not measured. The aim of this study was to assess the volume of coarse woody material of various types (coarse woody debris, snags), species, size, (dbh and height) and decay classes. The study was carried out in 2010. The volume of coarse woody debris was estimated with a method proposed by Van Wagner [1968]. The criterion of division into five decomposition classes follows Maser et al. [1979].
    Źródło:
    Sylwan; 2011, 155, 12; 851-858
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prawne aspekty leśnictwa miejskiego w Polsce
    Legal aspects of urban forestry in Poland
    Autorzy:
    Jaszczak, R.
    Ważyński, B.
    Wajchman-Świtalska, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/987089.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    lasy miejskie
    prawo lesne
    kierunki zmian
    Polska
    forestry legislation
    urban forests
    supervision
    management
    Opis:
    In Poland, the public believes that the main objective of urban forests is rather to conduct forest management focused on the recreational needs of residents than to produce timber. Considering this belief, it becomes reasonable to distinct the principles of forest management in urban forests from those related to the forests of the State Forests National Forest Holding. Because of the permanent presence of people in the city woods, the managing authorities of such areas should also educate the residents, while forest management should be subordinated to social functions, especially the recreational one. However, Poland lacks the unified system of managing the urban forests, not only at the national scale (there is no central independent organizational unit), but also at the level of individual cities, where various municipal units manage urban woodlands. In practice, each city has its own, individual solutions in this regard. The governing bodies of urban forests face with many problems in their activity. These problems are associated with a strong process of urbanization and human pressure on forest areas, while on the other hand there are no formal legal basis (laws, regulations, instructions) relating the municipal forests. The paper reviews the literature on urban forestry and urban forests worldwide to present the existing legislative frameworks and to propose some changes, based on the current Act on Forest. It was stated that urban forestry in Poland is located in its ‘narrow' definition, based on the traditional forestry, giving priority to the multiple social functions. The proposed changes in forest legislation are part of the discussion on municipal forests and urban forestry in Poland, aiming once again to draw attention to the fact that they are almost ignored in the Polish legislation. The indicated areas for improvements and supplements suggest issues the most important and urgent to solve, but they are not a comprehensive solution on this subject. In order to strengthen the supervision of urban forests in Poland, it is essential to consider the restoration of central supervision, coor− dinating activities of urban foresters by the development and implementation to the practice unified legal regulations, as well as to give wide autonomy to cities.
    Źródło:
    Sylwan; 2017, 161, 08; 659-668
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lesistość w Polsce w przekrojach terytorialnych
    Autorzy:
    Ciesielska, Katarzyna
    Ciesielski, Mariusz
    Powiązania:
    https://bibliotekanauki.pl/articles/543522.pdf
    Data publikacji:
    2017
    Wydawca:
    Główny Urząd Statystyczny
    Tematy:
    lesistość
    powierzchnia leśna
    podział terytorialny
    aglomeracje miejskie
    forest cover
    forestry
    forest area
    territorial division
    TERYT
    urban agglomeration
    Opis:
    Artykuł przedstawia zmiany lesistości w Polsce w latach 2002— —2014 w różnych przekrojach terytorialnych. Analizę przeprowadzono na podstawie danych GUS o powierzchni gruntów leśnych oraz o ludności i zmianach w podziale administracyjnym, które porównano w odniesieniu do województw, gmin oraz aglomeracji miejskich. W badanym okresie powierzchnia gruntów leśnych zwiększyła się o 290 tys. ha, co oznacza wzrost lesistości o 0,9 p.proc. w całym kraju. Wzrosła również powierzchnia leśna na 1000 mieszkańców (średnio w Polsce o 5,7 ha). Różnice w kształtowaniu się obu wskaźników najmocniej uwidoczniły się na poziomie gmin.
    The aim of the article is to present changes in forest cover within 2002—2014 in different territorial profiles. The analysis was conducted on the basis of CSO data concerning forest land, population and changes in administrative division, which were compared in relation to gminas, voivodships and urban agglomerations. The results indicate an increase in forest land area by 290000 ha in the period analysed, which implies an increase in the forest cover indicator by 0.9% across the country. The forest area per 1000 inhabitants also increased (on average by 5.7 ha in Poland). The differences in both indicators were the most visible at a lower territorial level.
    Źródło:
    Wiadomości Statystyczne. The Polish Statistician; 2017, 5
    0043-518X
    Pojawia się w:
    Wiadomości Statystyczne. The Polish Statistician
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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