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    Tytuł:
    Waloryzacja przyrodnicza zasobów leśnych w skali nadleśnictwa na przykładzie lasów Nadleśnictwa Jabłonna – studium metodologiczne
    Autorzy:
    Pawlowski, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/972797.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    waloryzacja przyrodnicza
    lasy
    zasoby lesne
    Nadlesnictwo Jablonna
    lesnictwo
    multifunctional forestry
    forest evaluation
    forest functions
    Jablonna Forest Discrict
    Opis:
    The method of valuation of functions forest natural resources in the scale of forest district in Poland is proposed. Protective, productive and social functions of forest located in lowlandarea near Warsaw were evaluated. For each function the specyfic criteria for ranking were elaborated.
    Źródło:
    Sylwan; 2003, 147, 07; 53-68
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prognozy ekonomiczno-gospodarcze w planowaniu urządzeniowym
    Economic and management forecasts in the forest management planning
    Autorzy:
    Wysocka-Fijorek, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/979097.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    forest management plan
    economic evaluation
    economic efficiency
    revenues
    Opis:
    Forest management is carried out based on the economic calculation, taking into account the principles of forest sustainability and protection. For a short period, an attempt to predict the unit’s economic situation on the basis of the analysis of the time series with a trend can be made. Appropriate exponential equalization methods were selected. When forecasting fixed costs in the new economic period, six methods were used (from the last year, from the last three years, Brown simple exponential smoothing model, Holt linear model, Winters model in the additive or multiplicative version) as well as the average value of all forecasts applied was calculated. To evaluate the tested models, among others, mean absolute error, root mean squared error and the predictability of the forecast were assessed. All analyses were performed using the MS EXCEL Solver add−in. Forest districts for which forecasts were made are located in the Regional Directorate of the State Forests in Krakow (A) and Białystok (B). Source data for forecasts came from the State Forests IT System and covered the years 2005−2014. The aim of the research was to evaluate the possibility of using the forecasted economic parameters in forest management planning estimated by various models and techniques of empirical verification. The study attempts to answer the question whether there is an econometric method that allows accurate forecasting of the economic situation of the forest district in the context of the realization of the tasks listed in the forest management plan. Relatively high accuracy of forecasts was achieved using the Holt linear model. Brown model, due to its methodological assumptions, resulted in a reduction in forecast results compared to other forecasting methods and expert knowledge. The method based on calculating the average value from many previously made forecasts gave very good results, which is also reflected in literature. Regardless of the group of costs analyzed, both fixed and unit variables, the lowest values of assessment of the compatibility of forecast were obtained by making the forecast based on the result from the last three years.
    Źródło:
    Sylwan; 2020, 164, 08; 619-627
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Metoda standaryzacji kosztów administracyjnych nadleśnictw z wykorzystaniem stopnia trudności gospodarowania
    Method of standardization of administrative costs of forest districts based on the management difficulty level
    Autorzy:
    Kocel, J.
    Kwiecień, R.
    Mionskowski, M.
    Garbacz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/987004.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Panstwowe Gospodarstwo Lesne Lasy Panstwowe
    nadlesnictwa
    koszty administracyjne
    standaryzacja
    wskaznik stopnia trudnosci gospodarowania
    administrative costs of forest districts
    standardization
    evaluation workload of forest districts' employees
    Opis:
    The article presents a method to standardize the administrative costs of forest districts using the management difficulty level index (STG). The scope of the study included the development of a revised structure of the STG for forest districts, comparison of the substantive and statistical factors that shape the level of administrative costs being incurred by forest districts with partial indicators that form the STG index, the development of the methods for determining the standard administrative costs of forest districts using the STG, and the selection of a method to be applied in the financial and economic practice of the State Forests. The source data for the administrative costs incurred by forest districts, as well as the data on the natural−forest conditions and annual economic tasks of the forest districts were obtained from the State Forests Information System databases for all the forests districts in Poland and from the Bureau for Forest Management and Geodesy. Information about the social environment of the forest districts was obtained from the Local Data Bank of the Central Statistical Office in Poland. In the methodological assumptions concerning the development of a method for shaping the level of administrative costs of the forest districts, two variants were adopted. The structuring of the STG for forest districts, as a tool to standardize administrative costs of forest districts, adopts the 'sum of relative values' method, where relative values of individual partial indicators (six simple and five complex ones) are obtained by dividing the absolute values of a specific indicator by the maximum value of this indicator for the whole population The obtained results of calculating the level of standard administrative costs of forest districts in two variants were similar. For the sake of clarity, simple mathematical formulas, and the ease of use by organizational units of the State Forests, the administrative cost standardization method based on the calculated average value of 1 item of the STG for forest districts per a given administrative cost group in the State Forests was used to build a makeshift of the State Forests plan for 2014−2016.
    Źródło:
    Sylwan; 2017, 161, 03; 226-237
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A spatial model of forest area in the middle ages based on historical, archaeological and geographic data: Case study of 13th-century Chełmno Land (North-Central Poland)
    Autorzy:
    Molewski, Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/15805005.pdf
    Data publikacji:
    2022
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    historical landscape reconstruction
    forest area
    Middle Ages
    Multi-Criterion Evaluation
    Chełmno Land
    Opis:
    The settlement established under German law in Chełmno Land in the 13th century, the resultant changes in the structure of agriculture and land cultivation techniques, and the growing demand on wood as timber, fuel and raw materials for crafts, all combined to contribute to the significant deforestation of the territory. The extent of this deforestation remains conjectural. The purpose in creating a model of forest area in 13th-century Chełmno Land was to attempt to reconstruct it and determine its size and, consequently, to verify hypotheses concerning the scale and the ultimate end of deforestation in the research area. The spatial model is based on published historical and archaeological data relating to selected components of the geographical environment that pertain to the forest area. A retrogressive method combined with Multi-Criterion Evaluation (MCE) was used to build a forest area model. The basic platform for collecting, analysing and visualising spatial data was the geographic information system (GIS). The presented estimates indicate that the forest area of Chełmno Land in the 13th century was larger than had previously been assumed, at about 20–25% of the entire territory.
    Źródło:
    Quaestiones Geographicae; 2022, 41, 3; 53-74
    0137-477X
    2081-6383
    Pojawia się w:
    Quaestiones Geographicae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Roundwood production forecasting in Poland, on the basis of the data of the central statistical office in the years 2000 - 2012
    Autorzy:
    Andrushko, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/95021.pdf
    Data publikacji:
    2016
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    wood industry
    forest industry
    roundwood production
    econometric model
    point forecast
    interval forecast
    forecast evaluation
    Opis:
    The paper presents the results of research on the construction and evaluation of the forecast of the economic phenomenon in the future time period on the example of roundwood production in Poland. The process of building an econometric model as a linear function is illustrated in this paper. The trend function was verified and the convergence coefficient was calculated. The point and the interval forecast was constructed. On the basis of the results of studies the forecast accuracy was evaluated and a number of recommendations were presented. The recommendations regard the use of research results for decision-making and the needs of the material economy.
    Źródło:
    Information Systems in Management; 2016, 5, 3; 307-317
    2084-5537
    2544-1728
    Pojawia się w:
    Information Systems in Management
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zagadnienia ekonomiczne w planowaniu urządzeniowym
    Economic issues in the forest management planning
    Autorzy:
    Wysocka-Fijorek, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/989755.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    urzadzanie lasu
    plan urzadzania lasu
    aspekty ekonomiczne
    forest management plan
    evaluation
    assessment
    efficiency
    Opis:
    The approach to forest management has changed many times over the time. Forest receives increasingly a lesser extent as wood and wild game supplier. Social and protective functions of the forest have begun to play more and more essential role. Change in the perception of the forest functions entails the questions about the economic consequences of the forest management in an era of changing priorities. This paper aims to compare approaches to the economic consequences of actions undertaken in the forestry in different periods. The evolution of the approach to the economic analysis can be traced. Analysis of historical publications allows to observe the changes, starting from 1820, when no special attention to the uniformity of drawing income from the forest was paid, through the interwar period, when attempts were made to maximize the profitability of forestry and through the World War II, when no analysis of economic rationality was taken, to the current situation, when more and more attention is paid to the economic consequence of changes in forest management priorities. Presented issues should be a contribution to the discussion on economic issues associated with conducting forest management especially in the context of the tasks included in the forest management plan. It must be noted that, despite the provisions in the instructions for the analysis of forest economic conditions, they often were not reflected in the management plans. Studies aimed at awareness raising and, consequently, the development of the synthetic parameters of an objective description and comparison of the economic conditions of forestry functioning both within the forest district and larger units seem to be necessary.
    Źródło:
    Sylwan; 2015, 159, 10; 872-879
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Metodyczne założenia analizy ekonomicznej gospodarki leśnej w planowaniu urządzeniowym
    Methodical assumptions to economic analysis in forest management planning
    Autorzy:
    Wysocka-Fijorek, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/985828.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    urzadzanie lasu
    plan urzadzania lasu
    gospodarka lesna
    analiza ekonomiczna
    metodyka
    forest management plan
    economic evaluation
    economic efficiency
    Opis:
    The forest management plan is the basic document on which the functioning of the forest district in a ten−years−long perspective is based. To maximize the usage, the economic expertise of the forest district administration (EEN) utilises in the large part of the analyses data available in the Information System of the State Forests, which can be obtained at the forest district level. The EEN consists of three basic parts: the general characteristics of the forest district, analysis of the past economy and a prognostic analysis. To preserve the operational character of the information, the most important parameters set for the forest district should be compared with the values for selected forest districts from regional directorates of the State Forests. The quality of the prognostic part of EEN depends primarily on the correctness of the adopted indicators and set values in the part analysing the effects of the past economy. The significance of this part of the EEN means that it should contain the most important elements related to plannable economic events and the related economic consequences. The introductory part of the EEN should start with presenting the background, the period and the principles of forest district functioning. One should remember that this document is not only prepared for the forest environment, but also for the people not related to forestry. In the main part of the expertise the natural, organizational and economic conditions of the forest management implementation in the given forest district are presented in a synthetic form. The economic expertise of the forest district is an expert study. Its primary goal is to determine the economic consequences of the implementation of the forest management plan prepared based on a synthetic assessment of the results of the past economy, taking into account the current conditions in the medium−term planning. The economic expertise for the forest management plan may be an important tool in improving the functioning of forest district and planning at various levels of management. The data contained there also allow to follow the dynamics of economic phenomena in the organizational units of the State Forests.
    Źródło:
    Sylwan; 2018, 162, 02; 91-100
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    ZIELEŃ KOMPONOWANA O FUNKCJI DYDAKTYCZNEJ – KONCEPCJA ARBORETUM W LEŚNICTWIE PLUSKI
    Composed greenery with a didactic function – the concept of an arboretum in Pluski Forestry
    Autorzy:
    Połucha, Iwona
    Powiązania:
    https://bibliotekanauki.pl/articles/459987.pdf
    Data publikacji:
    2019
    Wydawca:
    Fundacja Pro Scientia Publica
    Tematy:
    arboretum
    analiza krajobrazowa
    waloryzacja
    inwentaryzacja leśna
    koncepcja arboretum
    garden of trees
    landscape analysis
    forest inventory
    evaluation
    design conception of arboretum
    Opis:
    Teza. Artykuł dotyczy szeroko rozumianego tematu edukacji przyrodniczo-leśnej. Przedmiotem analiz było Nadleśnictwo Nowe Ramuki, które wyróżnia się niezwykle malowniczym położeniem w Mazursko-Podlaskiej Krainie Przyrodniczo-Leśnej. Walory tego obszaru predestynują go do realizacji zadań edukacyjnych. Omówione koncepcje. Teoretyczna część pracy zawiera opis cech geograficzno-przyrodniczych badanego nadleśnictwa oraz zarys historyczny terenów objętych opracowaniem. Ponadto obejmuje analizę walorów edukacyjnych nadleśnictwa. Szczegółowo rozpatrywano ścieżki dydaktyczne oraz obiekty edukacji przyrodniczej, takie jak Placówki Edukacji Przyrodniczej i Ekologicznej oraz Terenowe Bazy Edukacji Ekologicznej. Wynik i wnioski. Praktyczna część badań skupia się wokół możliwości edukacyjnych, jakie może stworzyć Nadleśnictwo Nowe Ramuki. W celu wyznaczenia kierunku potrzebnych zmian przeprowadzono badania ankietowe. Szczegółowym analizom poddano fragment Leśnictwa Pluski. Wykonana analiza krajobrazowa, inwentaryzacja oraz waloryzacja pod kątem atrakcyjności przyrodniczo-turystycznej wskazuje na znaczący potencjał terenu w zakresie turystyki. Oryginalność. Rezultatem finalnym podjętych badań jest autorska koncepcja arboretum w Nadleśnictwie Nowe Ramuki.
    Argument. This article concerns nature and forestry education. The subject of analysis was the forest inspectorate of Nowe Ramuki, which is one of the most beautiful parts of the Mazury-Podlasie region. The advantages of this area make it conducive to educational tasks. The concept discussed. The theoretical part of the article describes the geographical and natural features of the Nowe Ramuki forestry area and its historical background. This part also shows how the area is suitable for nature and forest education today. It describes in detail didactic tracks and forest education points such as Nature and Ecology Education Posts or Local Base of Ecology Education. Results and conclusions. The practical part focuses on how educational features of the Nowe Ramuki forestry area can be improved in the future. To find out what needs to be changed, a questionnaire was implemented. Part of the forestry area near Pluski was researched in more detail. A landscape analysis, forest inventory and evaluation of touristic attractiveness was carried out. This area has great potential for imroving tourism. Orginality. The final effect of the research was to create the concept of an arboretum in the Nowe Ramuki forestry area.
    Źródło:
    Ogrody Nauk i Sztuk; 2019, 9; 518-531
    2084-1426
    Pojawia się w:
    Ogrody Nauk i Sztuk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measurement and evaluation of timber yields and corresponding non-timber forest products of selected tree species. An exploratory study on poplar, Acacia, Ulmus and Juglans tree species in Kyrgyzstan
    Autorzy:
    Agbenowu, Y.I.S.
    Attah, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2049706.pdf
    Data publikacji:
    2018
    Wydawca:
    Fundacja na Rzecz Młodych Naukowców
    Tematy:
    forest zone
    Kirgizstan
    timber yield
    wood measurement
    evaluation
    poplar
    Acacia
    Ulmus
    Juglans
    biomass
    volume
    net present value
    growth yield
    rotation age
    Opis:
    With issues of high timber demand and illegal logging in the forest zones of Kyrgyzstan, agroforestry may serve as a viable option for rectification. Yields of timber and expected income from the most popular tree species are in most cases lacking. The goal of this study is to evaluate the timber yields and non-timber forest product from Ulmus, Poplar, Acacia and Juglans tree species in Kyrgyzstan. More focus was allocated to Poplar as this is one of the most common and preferred tree species in Kyrgyzstan. A sample size of 420 trees was recorded from 18 stands with 20 trees measured in each stand with the exception of Juglans which were 6 stands with 9-17 trees each The study estimated (i) tree volume using allometric parameters (ii) age-biomass relationship (iii) Factual Branch Analysis model to estimate the above ground biomass of the different tree segments (iii) revenue deduction and NPV of Poplar trees and (iv) biological rotation Age to determine the suitable age for Poplar harvesting. The findings show that NPV is highest at 10 years for Poplar when it is being considered for fast-growing timber. The biological rotation age was, however, higher at around 17 years. Site-specific age-biomass model appears to be suitable for estimating tree biomass since the tree allometry was found to differ significantly between studied stands even with similar age ranges. The developed relationship and tree database can adequately be applied to estimate tree volume and biomass in similar site conditions in the studied region.
    Źródło:
    Environment, Earth and Ecology; 2018, 2, 1; 12-27
    2543-9774
    2451-4225
    Pojawia się w:
    Environment, Earth and Ecology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Możliwość zastosowania metody GGE biplot do oceny stanu i identyfikacji zagrożeń zespołu Alopecuretum pratensis opisanego na terenie Parku Krajobrazowego "Podlaski Przełom Bugu"
    A possibility of using the GGE biplot method to evaluate the state of and risks for Alopecuretum pratensis assotiation described in the Bug Ravine Landscape Park
    Autorzy:
    Sienkiewicz-Paderewska, D.
    Paderewski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/339340.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    ekosystemy nieleśne
    fitocenozy łąkowe
    sukcesja wtórna
    synantropizacja
    waloryzacja ekosystemów półnaturalnych
    evaluation of semi-natural ecosystems
    grassland phytocoenosis
    non-forest ecosystems
    secondary succesion
    synanthropisation
    Opis:
    Zespół Alopecuretum pratensis (Regel 1925) Steffen 1931, występujący na terenie Parku Krajobrazowego "Podlaski Przełom Bugu", scharakteryzowano na podstawie 50 zdjęć fitosocjologicznych, wykonanych metodą Brauna-Blanqueta. Każde zdjęcie opisano względnym pokryciem gatunków: charakterystycznych dla klasy; charakterystycznych dla siedlisk wilgotniejszych lub siedlisk suchszych; synantropijnych oraz drzew i krzewów. Obliczono również następujące wskaźniki Ellenberga: L - wskaźnik świetlny, F - uwilgotnienia, R - odczynu gleby, N - zawartości azotu w glebie. Parametry te syntetycznie opisano metodą GGE biplot (ang. "Genotype and Genotype-by-Environment interaction effects"). Wykres typu biplot umożliwił wytypowanie grupy niezaburzonych płatów zespołu Alopecuretum pratensis oraz płatów zaburzonych. Te ostatnie to albo fitocenozy występujące w siedliskach przesuszonych, w których odnotowano równocześnie zwiększony udział gatunków synantropijnych, albo fitocenozy zlokalizowane w siedliskach wyraźnie wilgotniejszych. Większość płatów zespołu Alopecuretum pratensis, zanotowanych na terenie Parku "Podlaski Przełom Bugu", wykształciła się w warunkach siedliskowych zbliżonych do optymalnych dla tego syntaksonu i została zaliczona do postaci niezaburzonej, co świadczy o jego dobrej kondycji. Metoda GGE biplot okazała się przydatna do oceny stanu zespołu Alopecuretum pratensis oraz określenia kierunków jego zmian.
    The Alopecuretum pratensis association (Regel 1925) Steffen 1931 in the Bug Ravine Landscape Park was described by 50 relevčs with the use of Braun-Blanquet method. The aim of this study was to define the conditions and symptoms of degeneration of Alopecuretum pratensis. Each of the relevčs was described by the relative cover of: characteristic species of Molinio-Arrhenatheretea class, characteristic species of wetter and drier habitats, synanthropic species, tree and shrub species. The Ellenberg indicators (L - light, F - moisture, R - soil pH, N - soil nitrogen) were also calculated. Above mentioned parameters were described synthetically by the GGE biplot method (Genotype and Genotype-by-environment interaction effects). The graph designated the group of undisturbed and disturbed phytocenoses of Alopecuretum pratensis. The disturbed phytocoenosis were often located in drier habitats or in markedly wetter sites. In the first case it was associated with greater participation of synanthropic species. Summing up, most of the described phytocoenoses of Alopecuretum pratenis developed in conditions close to the optimal for that syntaxon and were classified as undisturbed, which indicated their good condition in the Bug Ravine Landscape Park. Selection of appropriate parameters of examined plant community allowed the use of the GGE biplot method for assessing the state of Alopecuretum pratensis and determining the directions of its change.
    Źródło:
    Woda-Środowisko-Obszary Wiejskie; 2011, 11, 3; 237-252
    1642-8145
    Pojawia się w:
    Woda-Środowisko-Obszary Wiejskie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Metodyczne podstawy określania wskaźnika stopnia trudności gospodarowania leśnictw Lasów Państwowych
    Methodological foundations of determining the indicator of the degree of management difficulty in the State Forests forest ranges
    Autorzy:
    Kocel, J.
    Kwiecień, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/994963.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Panstwowe Gospodarstwo Lesne Lasy Panstwowe
    lesnictwa
    gospodarka lesna
    stopien trudnosci
    wskaznik stopnia trudnosci gospodarowania
    metody obliczen
    management difficulty level
    forest range
    assessment
    evaluation of workload
    forestry staff
    state forests
    Opis:
    The paper presents the method of determining the management difficulty index for forest ranges of the State Forests To assess the management difficulty level, a set of 16 sub−indices was developed characterizing terrain obstacles, the structure of and threat to forest resources, as well as the extent of management tasks. The annual work time structure of range forest managers was a basis for the point rating of individual sub−indices. The usefulness of the method was proven in the management practice of the State Forests.
    Źródło:
    Sylwan; 2012, 156, 02; 118-127
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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