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    Wyświetlanie 1-4 z 4
    Tytuł:
    Growth traits of natural regeneration of Scots pine (Pinus sylvestris L.) in south-eastern Poland
    Autorzy:
    Masternak, Katarzyna
    Głębocka, Katarzyna
    Surowaniec, Krystian
    Kowalczyk, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/2041518.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    Scots pine
    soil preparation
    regeneration methods
    seedlings growth
    Opis:
    In recent years, particular attention has been paid to enhancing the meaning of natural regeneration, which is a part of the implementation of the concept of sustainable development and is one of the pillars of the natural direction of forest silviculture. Since the middle of the last century, the contribution of natural regeneration in Poland has been steadily increasing. The paper presents the analysis of density and variability of growth traits of natural regeneration of Scots pine (Pinus sylvestris L.) in south-eastern Poland. The study involved four compartments, which were prepared with the use of tiller and plough (active and double mouldboard). Density of seedlings, their height and root collar diameter, were measured. Density and growth characteristics of seedlings were higher at the tiller area and furrow compared with nonscarified soil and ridge. The highest cover with herbaceous plant was reported in ridges and non-scarified soil, but in most of the analysed compartments, it had no effect on the density of seedlings. It was found that different methods for soil preparation create different conditions for germination of seeds, which is reflected in the number of seedlings and its growth traits.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2020, 62, 3; 220-226
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Porównanie odnowień sosny zwyczajnej powstałych z siewu i sadzenia w różnych terminach
    Comparing Scots pine regeneration established by sowing and planting at various times of year
    Autorzy:
    Barzdajn, W.
    Kowalkowski, W.
    Tomczak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1290847.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    hodowla lasu
    odnowienia lasu
    drzewa lesne
    sosna zwyczajna
    Pinus sylvestris
    odnowienia z siewu
    odnowienia przez sadzenie
    wzrost roslin
    zageszczenie roslin
    methods of forest regeneration
    pine growth
    density
    Opis:
    The aim of this study was to evaluate the practical feasibility of two forest regeneration methods using Scots pine Pinus sylvestris L. To this end, comparative experiments were established in the Złotoryja and Legnica Forest Districts. The site in Złotoryja had been clear cut, while the experimental plot in Legnica was established at a location damaged by wind in 2009 and cleared from wind throws and wind-broken trees before the experiment. Four different dates for sowing and two for planting were chosen in order to investigate the potential forest regeneration with respect to time. Both experiments were established according to the same design: a complete random block design with five replication blocks. To each plot we applied approximately 53 g (1.2 kg/ha) of seeds and planted 230 seedlings (10 200 seedlings/ha). In 2017, the height of the pine trees was recorded and their increment in height was measured in 2016 as well as 2017. A preliminary analysis of results was conducted using ANOVA for multiple experiments in order to identify significant differences and to then combine variables to form homogeneous groups to which the Duncan multiple range test could be applied. For growth traits, the ANOVA showed significant differences between experimental sights as well as a significant interaction of factors with the experimental site. In terms of planting, April was the most advantageous resulting in the greatest tree height in both forest districts, while in the Legnica Forest District the saplings planted in April also showed the greatest annual increments. Among the sowing dates, the most advantageous was the winter sowing, while the April sowing date produced the least desirable results. In conclusion, both sowing and planting are effective methods to establish pine cultures in coniferous forest. Furthermore, both methods may be performed at the currently recommended spring date, but they may also be postponed to summer and winter dates provided favorable weather conditions prevail.
    Źródło:
    Leśne Prace Badawcze; 2019, 80, 3
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Forest management as an element of environment development
    Gospodarka leśna jako element kształtowania środowiska
    Autorzy:
    Jaszczak, R.
    Gołojuch, P.
    Wajchman-Świtalska, S.
    Miotke, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/396118.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    forest management
    sustainable forest management
    afforestation
    cutting methods
    regeneration
    urban forest
    gospodarka leśna
    zrównoważona gospodarka leśna
    zalesienia
    rębnie
    odnowienia
    lasy miejskie
    Opis:
    The implementation of goals of modern forestry requires a simultaneous consideration of sustainable development of forests, protection, needs of the environment development, as well as maintaining a balance between functions of forests. In the current multifunctional forest model, rational forest management assumes all of its tasks as equally important. Moreover, its effects are important factors in the nature and environment protection. The paper presents legal conditions related to the definitions of forest management concepts and sustainable forest management. Authors present a historical outline of human’s impact on the forest and its consequences for the environment. The selected aspects of forest management (eg. forest utilization, afforestation, tourism and recreation) and their role in the forest environment have been discussed.
    Realizacja celów postawionych współczesnemu leśnictwu wymaga jednoczesnego uwzględniania trwałego i zrównoważonego rozwoju lasów, potrzeb ochrony i kształtowania środowiska oraz zachowaniu równowagi w zakresie pełnionych przez lasy funkcji. W obowiązującym modelu lasu wielofunkcyjnego racjonalna gospodarka leśna uwzględniać ma wszystkie postawione jej zadania jako równorzędnie ważne, a jej efekty są ważnym czynnikiem ochrony przyrody i środowiska. W pracy przedstawiono związane z tym uwarunkowania prawne. Przypomniany został rys historyczny wpływu człowieka na las i jego konsekwencje dla środowiska. Przybliżono problem istnienia lasu jako składnika infrastruktury przestrzennej. Omówiono wybrane aspekty gospodarki leśnej i ich znaczenie dla środowiska leśnego.
    Źródło:
    Civil and Environmental Engineering Reports; 2017, No. 27(4); 17-27
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    CaO-based high temperature CO2 sorbents – Literature review
    Autorzy:
    Konopacka-Łyskawa, Donata
    Czaplicka, Natalia
    Szefer, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/2086811.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    carbon dioxide
    Ca-based sorbents
    synthesis methods
    sorbent regeneration
    Ca-looping
    dwutlenek węgla
    Sorbenty na bazie Ca
    metoda syntezy
    regeneracja sorbentu
    Ca-pętla
    Opis:
    The use of CaO-based adsorbents has a high potential to capture CO2 from various systems due to its high reactivity with CO2, high capacity, and low cost of naturally derived CaO. The application of CaO-based sorbents to remove carbon dioxide is based on a reversible reaction between CaO and CO2. However, multiple carbonation/calcination cycles lead to a rapid reduction in the sorption capacity of natural CaO, and therefore efforts are made to reduce this disadvantage by doping, regenerating, or producing synthetic CaO with stable sorption properties. In this review, the synthesis methods used to obtain CaO-based sorbents were collected, and the latest research on improving their sorption properties was presented. The most commonly used models to describe the CO2 sorption kinetics on CaO-based sorbents were also introduced. The methods of sorbent regeneration and their effectiveness were summarized. In the last part of this review, the current state of advancement of work on the larger scale, possible problems, and opportunities during scale-up of the calcium looping process were presented. Concluding (i) the presented methods of adsorbent synthesis allow for the production of doped CaO adsorbents on a laboratory scale, characterized by high CO2 capture efficiency and good cyclic stability, (ii) the most commonly used in practice models describing CO2 chemisorption are empirical models and the shrinking core model, (iii) the use of sorbent regeneration allows for a significant improvement in sorption capacity, (iv) the scale-up of both the production of new CaO adsorbents and the CO2 capture technology with their use requires further development.
    Źródło:
    Chemical and Process Engineering; 2021, 42, 4; 411--438
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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