Wyniki wyszukiwania - Biblioteka Nauki

1

Modelling and analyzing timber production and carbon sequestration values of forest ecosystems: a case study

100%

Keles S. , Baskent E. Z.

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2007

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tom 16

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nr 3

473-479

EN

The integration of carbon captured by forest ecosystems into forest management planning models has become increasingly more important, particularly in the areas of climate change, land use, and sustainable forest management. The main objective of this work is to develop a multiple-use forest management planning model that focuses on the interactions of net carbon sequestration and timber production opportunities in a forest ecosystem including forest openings. The linear programming model is used to develop various forest management scenarios for a forest that yields timber and carbon objectives. The results of forest management planning scenarios showed that increased net carbon sequestration can be attained at a significant cost in terms of forgone timber harvest and financial returns. Results also showed that reforestation of forest openings and long-term protection of forest ecosystems provides high biomass and carbon storage over the planning horizon.

2

Timber production market in Poland and selected EU countries - current status and future challanges

100%

Gajdemski P. , Gaweł E. , Gardziej K. , Kluczyński B. , Orłowski M. , Hortizuela K.

Management Systems in Production Engineering

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2016

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tom nr 1 (21)

37--39

EN

The paper discusses the issue of the development of timber production market and timber industry in Poland and selected EU countries. The potential of forest resources in Poland against the background of other European countries is presented, as well as selected aspects exerting impact on the development processes of the sector of production. Particular attention is paid to the structure of ownership of forests in Poland and selected countries of the European Union. The structure of the use of means for research and development is analyzed with particular focus on those branches which allocate the biggest amounts for such purposes. Technological trends in the timber industry in Poland is described. Finally the prospects in the development of timber industry in the near future are discussed.

PL

Artykuł podejmuje zagadnienie rozwoju rynku produkcji drewna oraz branży drzewnej w Polsce i wybranych krajach Unii Europejskiej. Przedstawiony został potencjał zasobów leśnych Polski na tle innych państw wspólnoty oraz najważniejsze, wybrane aspekty wpływające na przebieg procesów rozwojowych tego sektora produkcji. Zwrócono również uwagę na strukturę własności lasów w Polsce oraz wybranych krajów Unii Europejskiej. Przeanalizowano strukturę wykorzystania środków na działalność badawczo-rozwojową, z wyszczególnieniem branż, które na tą działalność przeznaczyły najwięcej środków. Opisano trendy technologiczne w branży drzewnej w Polsce. Ponadto określono perspektywy rozwoju przemysłu drzewnego w najbliższych latach.

3

Identifying priority areas for the conservation of ecosystem services using GIS-based multicriteria evaluation

100%

Liu Y. , Zhang H. , Yang X. , Wang Y. , Wang X. , Cai Y.

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tom 61

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nr 3

EN

The rapid global urban growth poses a great risk to the ecosystem services which are vital to sustaining and fulfilling human life. As an essential part of Fuzhou eco-planning task in south-eastern China, we identified the priority conservation areas for ecosystem services to allow a sustainable urban expansion. We modeled and mapped five ecosystem services (carbon storage, timber production, water yield, water-quality improvement and sediment retention) using InVEST and proposed a definition of priority areas for the conservation of ecosystem services. Priority areas for individual ecosystem services showed that 24% of the region was needed to produce 26% of water yield. Between 6 and 17% of the region was required to conserve at least 20% of other four services, depending on the ecosystem service of interest. In addition, scenarios for multiple ecosystem services conservation were developed using the ordered weighted averaging (OWA) method, a multicriteria evaluation method, to take the tradeoffs among ecosystem services into account. The results showed that, along with the decrease of the OWA risk, the overall areas and the areas at both of the conservative levels dropped gradually. Furthermore, two efficiency indices were created to evaluate the performance of different OWA scenarios. Study results suggested that the efficiency of scenarios was associated with the conservation threshold and OWA risk, as well as the spatial correlation among ecosystem services. In sum, identifying priority areas for ecosystem services in a spatially explicit manner, and analyzing tradeoffs between them, can help make land use and natural resource decisions more effective and efficient.

4

Produktionsoutput versus Ausbeute Eine analytische Herangehensweise an die Sägewerksorganisation

84%

Hermas H. , Krzosek S.

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tom 109

5

Quantification of long term wood production according to population explosion during 20th century

84%

Parobek J.

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tom 24

6

Forest functions and abiotic threats in private forests : conclusions from an empirical analysis of stakeholder opinions

67%

Wysocka-Fijorek E. , Gołos P. , Gil W.

Ekonomia i Środowisko

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2022

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tom nr 3

342--360

EN

The study aimed to recognise the preferences of various stakeholder groups representing three regions of Poland towards the most important forest ecosystem services and to determine the threats to performing these functions resulting from the occurrence of extreme weather phenomena. The study was based on surveys conducted in 2019 among various stakeholders in three regions of Poland. The respondents assigned a point weight value to each of the seven indicated forest functions and reported the occurrence of extreme weather events causing damage to forests owned or supervised by them. The survey results indicate that for all stakeholders, the most important function of the forest is timber production. However, respondents from the southern region paid more attention to water protection through forests than respondents from other regions.

PL

Celem artykułu jest określenie preferencji różnych grup interesariuszy reprezentujących trzy regiony Polski wobec najważniejszych leśnych usług ekosystemowych oraz określenie zagrożeń dla pełnienia tych funkcji wynikających z występowania ekstremalnych zjawisk pogodowych. Opinie zostały zebrane w badaniach ankietowych przeprowadzonych w 2019 r. Respondenci przypisali wartość wagową każdej z siedmiu wymienionych funkcji lasu oraz zgłaszali występowanie ekstremalnych zjawisk pogodowych powodujących szkody w lasach będących ich własnością lub przez nich nadzorowanych. Wyniki oceny istotności funkcji wskazują, że dla przedstawicieli wszystkich grup interesariuszy najważniejszą funkcją lasu była produkcja drewna. Respondenci z regionu południowego przykładali większą wagę do ochrony wód przez lasy, niż respondenci z innych regionów.

7

O vlijanii pazmerno-kachestvennojj kharakteristiki syrja na velichinu ego pazkhoda v proizvodstve pilomaterialov

59%

Marchenko N. , Bileckij M.

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tom 79