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Wyszukujesz frazę "the function of the forest" wg kryterium: Wszystkie pola

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Sukcesja dębu w drzewostanach sosnowych na siedliskach borowych
    The oak succession in the pine stand in the coniferous forest habitat
    Autorzy:
    Gniot, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1016532.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    sukcesja roslin
    drzewostany sosnowe
    siedliska borowe
    Quercus
    lesnictwo
    dab
    drzewa lesne
    natural succesion
    oak
    pure pine stand
    coniferous forest habitats
    silviculture
    transformation of the
    stand
    the complexity in the forest vegetation community
    the biological diversity in the forest
    forestry
    headquater
    balanced proecological forest management unit
    the function of the forest
    multipurpose
    forest
    the ecosystem of the forest
    stand varied in species
    biocenosis
    the natural upgrowth
    Opis:
    Permanently balanced forest economy demands today a resignation from a constant model of the forest stand, which preferred the productive function of the forest, mostly without any consideration to its natural values formed by Mother Nature. Implanting on Polish grounds principles of multifunctional forest districts acknowledged as a breeding object of the whole forest ecosystem, giving in that way the forest economy a proecological dimension. Its a result from a general progress of civilization and achievements in forest science; reaching towards the needs and expectations from the society gaining a general acceptation from different environments. One of the fundamental elements implementing the ecosystem is to rebuild deformed and artificially barred forest phytocenosis. This refers especially to pure pine stands on habitats, in which trophoism potential explains breeding habitats species variety. A good help for the forester in this area can be a natural succesion of good, noble broad−leaved species like for example the oak. Succesion of this species takes on a special meaning in poor habitats, in which it without any special imposes enriches the biocenose with the whole positive outcome accompanying this process; it can also be a valuable clue to the potential fertility in the habitat and the complexity in the forest vegetation community. An important task is to lead the way for the oaks development from succesion to its fullest use as a natural presence in creating the future forest generation. The article below is devoted to this question describing the natural up growth of the oak in pine stands on the coniferous forest habitats in Forest District Różanna and the methods and results in which they are used for breeding.
    Źródło:
    Sylwan; 2007, 151, 05; 60-72
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Economic and tourist functions of the forests in Lublin province
    Autorzy:
    Mazurek-Kusiak, A. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/96158.pdf
    Data publikacji:
    2018
    Wydawca:
    Fundacja Ekonomistów Środowiska i Zasobów Naturalnych
    Tematy:
    forest
    Lublin province
    forest function
    las
    województwo lubelskie
    funkcja lasu
    Opis:
    The research objective was to present social and economic functions of forests in Lublin Province against the background of other Polish provinces, at the same time pointing at the most important functions performed by the forests of the studied region. The research was conducted with the use of the diagnostic survey method by employing the technique of questionnaire, statistical data analysis and the analysis of the documentation made available by the Directorate of National State Forests. The forests of Lublin Province yield the most forest berries in Poland (on average 2725,29 tons a year). The main motivation for visiting forests among rural residents and inhabitants of small towns is the collection of forest berries and mushrooms; 61.0% and 50.8% respectively, while for inhabitants of larger cities it is recreational tourism and rest opportunities (67.8%). The added value of the study is cohesive factsheet of the economic and social functions of forests in the Lublin Voivodship.
    Źródło:
    Ekonomia i Środowisko; 2018, 2; 216-230
    0867-8898
    Pojawia się w:
    Ekonomia i Środowisko
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Waloryzacja lasu jako narzędzie oceny potencjału rekreacyjnego obszarów leśnych
    Forest valuation as a tool for assessing the potential of recreational areas of forests
    Autorzy:
    Wajchman-Switalska, S.
    Jaszczak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/791367.pdf
    Data publikacji:
    2017
    Wydawca:
    Wyższa Szkoła Zarządzania Środowiskiem w Tucholi
    Tematy:
    lasy
    tereny lesne
    potencjal rekreacyjny
    funkcje lasu
    waloryzacja lasu
    srodowisko lesne
    forest
    valorization
    assessment
    recreational area
    recreational potential
    forest function
    forest area
    forest environment
    Źródło:
    Zarządzanie Ochroną Przyrody w Lasach; 2017, 11
    2081-1438
    2391-4106
    Pojawia się w:
    Zarządzanie Ochroną Przyrody w Lasach
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preferencje społeczne w zakresie czasu wypoczynku w lasach obrębów Warlubie i Drwęca
    Social preferences in the scope of leisure time in forests within the Warlubie and Drweca Forests Districts
    Autorzy:
    Kikulski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/791601.pdf
    Data publikacji:
    2015
    Wydawca:
    Wyższa Szkoła Zarządzania Środowiskiem w Tucholi
    Tematy:
    lasy
    funkcje turystyczne
    funkcje rekreacyjne
    wypoczynek
    preferencje spoleczne
    wywiad kwestionariuszowy
    forest
    tourist function
    recreational function
    rest
    social preference
    leisure time
    Warlubie Forest District
    Drweca Forests District
    Opis:
    Badania przeprowadzone na próbie losowo dobranych 947 dorosłych respondentów wykazały, że 75% z nich wypoczywa w lasach na terenach badań (obręby Warlubie i Drwęca). Zdecydowanie najbardziej preferowaną przez te osoby porą roku jest lato. W celach turystycznorekreacyjnych ludność przebywa na obszarze badań najczęściej w sumie kilkanaście dni lub kilka tygodni. Ponad połowa ankietowanych wypoczywa w lasach zazwyczaj w różne (we wszystkie) dni tygodnia, a prawie wszyscy pozostali – w dni weekendowe. Większy udział stanowiły osoby, które wskazały godziny popołudniowe jako preferowane. Wyniki badań różnią się od uzyskanych w innych częściach Polski.
    The research, carried out on a representative sample of 947 adult respondents, showed that 75% of them rest in forests within the survey areas (Warlubie and Drwęca Forest Districts). Summer is by interviewees by far the most preferred season of the year. People stay in research area for tourist and recreational purposes mostly several days or a few weeks (overall, per year). More than half of respondents usually rest in forests on various (all) days of the week, while almost all the rest – at weekends. There were more respondents who indicated the afternoon, as a preferred time of the day. Survey results vary from obtained ones in other regions of Poland.
    Źródło:
    Zarządzanie Ochroną Przyrody w Lasach; 2015, 09
    2081-1438
    2391-4106
    Pojawia się w:
    Zarządzanie Ochroną Przyrody w Lasach
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena ekonomiczna retencyjnych właściwości lasu
    Economic valuation of the water storage capacity of forests
    Autorzy:
    Tyszka, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/989798.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    lasy
    retencja wodna
    mala retencja wodna
    ocena ekonomiczna
    forest
    water storage
    price of water
    valuation of the water−storage function
    Opis:
    The article attempts to calculate the economic value of the natural water storage capacity of forests. The impact of forests on the volume of the river runoff and on the delay of the water cycle from the precipitation to the runoff was an indicative measure of storage capacity of the forest. Data from long−term research aimed at determining forest−water interactions in small catchments were used. Four weakly−correlated parameters of runoff characteristics were determined, reflecting the scale of retention capacities of forested areas. These parameters included mean annual runoff (HR), coefficient of the annual runoff irregularity of (HRmax/HRmin), summer to winter half−year runoff ratio (HL/HZ) and the volume of the discharge (Wq/Sq). Equations were developed interpreting the range of changes of the parameters with the increase of forest cover from 0 to 100% (fig. 1−3), and the volume of water stored by the forest per 1% of the forest cover per year was calculated. Using simplifying assumptions, the total volume of water stored per hectare of the forest in the average year was calculated to 9.05 m³. The unit cost of 1 m³ of water was determined on the basis of the lowest price which the State Forests (in the territory of the Garwolin Forest District) spent to increase the volume of the water stored in small reservoirs. No difference was made between natural and artificial water storage in terms of utility. According to such simplified calculations, the natural storage capacity of forests was estimated at 1,089 PLN per year. Apart from the water storage function, forests provide other benefits resulting from a wide range of hydrological, water−protecting effects. Water resources safeguard, inter alia, the sustainable development of forests: affect the climatic conditions, reduce the level of environmental contamination. These functions can be intensified through the use of appropriate methods of forest management.
    Źródło:
    Sylwan; 2015, 159, 06; 483-490
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spatial autocorrelation of tree attributes in naturally regenerated managed beech (Fagus sylvatica) forests in the Beskid Niski Mountains, southern Poland
    Autorzy:
    Szmyt, J.
    Stoyan, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/41093.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    spatial structure
    spatial correlation function
    tree
    natural regeneration
    beech
    Fagus sylvatica
    beech forest
    forest
    Beskid Niski Mountains
    Polska
    Opis:
    European beech (Fagus sylvatica L.) is a widely distributed forest tree species in central, southern and western Europe. In Poland it reaches the eastern limit of its natural range. The three forest stands selected for the analysis presented here are located in the Dukla Forest Inspectorate, southern Poland in the Beskid Niski Mountains. The measurement plots were rectangular, 0.35 ha each, established under homogenous conditions. The origin of all stands is natural and up to now they were thinned several times according to selective thinning method. The main tree species on each plot is European beech. In each stand (x, y) coordinates, the species, total heights of trees and their diameters at breast height were recorded. Total tree height, diameter, basal area and tree volume were considered as marks in statistical analysis. The aim of this paper is to find out the differences in the spatial autocorrelation of different tree marks as well as to explain the reasons for differences if they were observed. The empirical mark correlation functions indicated that there is a negative spatial correlation of all these marks in all three forest stands, i.e. trees close together tend to have smaller marks than the average in the stand. No significant spatial correlation was found for the tree heights. Diameter, basal area and volume show some correlation, but only in one stand a deviation test showed that the detected spatial correlation is significant. The mark variograms indicated that neighboring trees tended to have similar sizes.
    Źródło:
    Dendrobiology; 2014, 71
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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