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Wyświetlanie 1-3 z 3
Tytuł:
Forest ecosystem services – assessment methods
Autorzy:
Kornatowska, Bożena
Sienkiewicz, Jadwiga
Powiązania:
https://bibliotekanauki.pl/articles/2045717.pdf
Data publikacji:
2018
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
forest functions
non-market forest values
economic valuation methods
biodiversity
Opis:
Forest ecosystems represent the most important values of natural assets. In economic valuation techniques, to estimate the value of forest ecosystem services, the attention is still focused mainly on their market values, i.e. the value of benefits measured in the economic calculation based, first of all, on the price of timber. The valuation of natural resources is currently supported by considerations of the global policy, in order to strengthen the argumentation justifying the need to incur expenditure related to the protection of biodiversity. There is increasing evidence that biodiversity contributes to forest ecosystem functioning and the provision of ecosystem services. Natural capital of forests can be consumed directly as food, wood and other raw materials or indirectly – by benefitting from purified water and air, safeguarded soils or protected climate. At the same time, forest ecosystems provide us with a range of intangible values – scientific, cultural, religious as well as encompass heritage to pass on to future generations. In the era of increasing pressure on the use of free public goods (natural resources), it is necessary to improve understanding of the role of forests in creating national natural capital, and in enhancing the quality of human life. All things considered, the so called non-market forest ecosystem services may have a much higher value than the profits from the production of timber and raw materials. Needless to say, non-market values of forest ecosystems are of great importance for the quality of human life, and the awareness of this should translate into social behavior in the use of natural resources. This paper reviews the methods to estimate the value of forest ecosystem services in view of recently acknowledged paradigm to move forward from economic production to sustainable human well-being.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2018, 60, 4; 248-260
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of climate change on ivy (Hedera helix L.) expansion in forests of Central Poland
Autorzy:
Kucharski, Leszek
Kloss, Marek
Sienkiewicz, Jadwiga
Liszewska, Małgorzata
Kiełtyk, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/2042486.pdf
Data publikacji:
2019
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
expansive species
forest habitats
ecotones
climate warming
Opis:
The article refers to a broader context of scientific debates on the effect of climate warming on shifts in species ranges and describes the recent changes in the distribution and life strategy of Hedera helix close to its eastern limit, in light of climate changes. European ivy is an ecotone species, occurring in fringe communities, in deciduous and mixed deciduous forests in fresh and moist habitats that are occupied by oak-hornbeam and riparian alder-ash forests in Central Poland. Since the mid-20th century, the ivy, a species rarely reproducing generatively, has become an expansive plant with a growing number of sites where flowering and fruiting individuals are encountered. We studied the distribution, habitat requirements and flowering of H. helix in Central Poland in the years 2015–2017 and compared to the situation in the mid-1970s. Climate changes in terms of average air temperatures and precipitation amounts for the past four decades were also assessed. Within the study area, 474 stands of naturally growing Hedera have recently been identified. Ivy was found to reproduce generatively on 121 of those locations. There has been an almost 10-fold increase in the number of fruiting ivy specimens since the mid-1970s of the 20th century. Changes in the species life strategy can be ascribed to the increase in both average air temperatures and solar radiation intensity observed for the past decades. Both enhanced fragmentation of woodland tracts and development of forest ecotones and forest canopy openings promote the expansion of H. helix, while its habitat preferences remain unchanged.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2019, 61, 3; 211-221
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of fertilisation with P, Mg or S enriched urea-ammonium nitrate solution on the management of macronutrients in common maize
Autorzy:
Wierzbowska, Jadwiga
Sienkiewicz, Stanisław
Światły, Arkadiusz
Powiązania:
https://bibliotekanauki.pl/articles/27312643.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
calcium
phosphorus content
phosphorus uptake
magnesium
sulphur
magnesium fertilisation
sulphur fertilisation
maize
nitrogen
phosphorus
potassium
Opis:
The purpose of this study has been to determine the effect of fertilisation with urea-ammonium nitrate (UAN) solution enriched with P, Mg or S on the content of macronutrients in the grain and straw of maize. The following fertilisers were tested in the field experiment: ammonium nitrate, urea, UAN - 32% N; RSM+S - 26% N + 3% S; RSM+P(Medium) - 26% N and 4.80% P; RSM+P(Starter) - 21% N and 7.86% P; UAN + Mg - 20% N + 4% Mg. In each year of the experiment, significant differentiation in the contents of P, K, Ca, Mg and S in maize grain and straw was observed, depending on the applied nitrogen fertilisation. However, considering the average values from each treatment achieved over the three years, it was demonstrated that the fertilisation significantly changed only the content of P and S in grain and K and Ca in straw of maize. The removal of nutrients was the highest in the second year of the research and amounted in kg∙ha-1 : P - about 100, K - about 350, Ca - about 80, Mg - about 35 and S - about 31, which in turn were differentiated over the years of the experiment in the three years. The removal of P, K, Mg and S also significantly depended on fertilisation. Significant differences, however, most often concerned the control treatment relative to the fertilised ones. The contribution of grain to the accumulation of nutrients also varied significantly in the three years of the experiment. Significantly the lowest share of grain in terms of P and S accumulation was noted in maize grown without N fertilisation.
Źródło:
Journal of Water and Land Development; 2023, 57; 39--51
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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