Wyniki wyszukiwania - AGRO

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A bibliography of the natural history of the Niepołomice Forest (Southern Poland) for the period 1978-1985

100%

Derlaga A.

Acta Hydrobiologica

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1987

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tom 29

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nr 1

2

Earthwork volume estimation for the construction of forest roads that would account for an ecological criterion

100%

Hruza P.

Polish Journal of Environmental Studies

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2014

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tom 23

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nr 3

Technical elements, such as forest road networks, are inseparable parts of forest ecosystems. The current approach to the layout of a forest road network is largely based on technical and economic solutions and does not include an approach related to the forest ecosystem itself, which should be taken into account in the form of an ecological criterion. The aim of this work was to find out whether inclusion of the ecological criterion in the current method for the layout of a forest road network will affect the construction of forest roads and its economy. The inclusion of the ecological criterion is based on respecting forest stands with a high value of the real potential of forest functions within the accessed area so that these stands would be disrupted as little as possible and the real potential of forest functions would not be reduced considerably in consequence of the construction and use of the forest road network. The forest road network is therefore designed in the stands with a low value of the real potential. Specifically, we examined the changes in parameters of earthwork amount and we analyzed if the changes were statistically significant, and whether the spatial design of the forest road cross profile would change and how this change would be manifested in the construction of forest roads. The results showed that inclusion of the ecological criterion in the construction of forest roads causes only a slight increase in the level of the evaluated parameters of earthwork and thus also economic costs.

3

The first record of Armillaria mellea sensu stricto in a forest ecosystem in Poland

100%

Lakomy P.

Phytopathologia Polonica

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2001

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tom 21

4

The conditions of spatial variation in throughfall in a fir-beech forest stand in Swietokrzyskie Mountains

88%

Kozlowski R.

Rocznik Świętokrzyski. Seria B. Nauki Przyrodnicze. Kieleckie Towarzystwo Naukowe

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2013

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tom 34

5

Ecological engineering in the redevelopment of forest ecosystems on old farmland

88%

Szujecki A.

Folia Forestalia Polonica. Series A . Forestry

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1990

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tom 32

6

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Terrestrial snails typical of forest ecosystems of Wielkopolska

88%

Jankowiak A., Kalinowski T., Czyz M.

Folia Malacologica

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2012

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tom 20

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nr 1

7

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

75%

Keles S., Baskent E. Z.

Polish Journal of Environmental Studies

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2007

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tom 16

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nr 3

473-479

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.

8

Slope aspect and altitude effect on selected soil organic matter characteristics in Beskid Mountains forest soils

75%

Staszel K., Blonska E., Lasota J.

Folia Forestalia Polonica. Series A . Forestry

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2021

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tom 63

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nr 3

9

Influence of recreation impact on forest ecosystems stability and their biodiversity: the case of the Shatsk National Natural Park

75%

Pits N., Gorban I., Alokhina O.

Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego

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2013

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tom 10

10

Forest ecosystem as a source of CO2 during growing season: relation to weather conditions

75%

Taufarova K., Havrankova K., Dvorska A., Pavelka M., Urbaniak M., Janous D.

International Agrophysics

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2014

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tom 28

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nr 2

Net ecosystem production reflects the potential of the ecosystem to sequestrate atmospheric CO2. Daily net ecosystem production of a mountain Norway spruce forest of the temperate zone (Czech Republic) was determined using the eddy covariance method. Growing season days when the ecosystem was a CO2 source were examined with respect to current weather conditions. During the 2005, 2006, and 2007 growing seasons, there were 44, 65, and 39 days, respectively, when the forest was a net CO2 source. The current weather conditions associated with CO2 release during the growing seasons were: cool and overcast conditions at the beginning or end of the growing seasons characterized by a 3-year mean net ecosystem production of -7.2 kg C ha-1 day-1; overcast or/and rainy days (-23.1 kg C ha-1 day-1); partly cloudy and hot days (-11.8 kg C ha-1 day-1); and overcast and hot days (-13.5 kg C ha-1 day-1). CO2 release was the highest during the overcast or/and rainy conditions (84%, average from all years), which had the greatest impact during the major production periods. As forests are important CO2 sinks and more frequent weather extremes are expected due to climate change, it is important to predict future forest carbon balances to study the influence of heightened variability in climatic variables.

11

Relation between characteristics of natural environment and ecosystem services offered, their indices and measures (case study of three communes of Podlaskie voivodship)

75%

Roo-Zielinska E., Grabinska B.

Ekonomia i Środowisko

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2014

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nr 4[51]

12

Dead wood complexity shapes the pattern of the occurrence of threatened saproxylic beetle Cucujus cinnaberinus

75%

Goczal J., Rossa R.

Polish Journal of Ecology

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2017

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tom 65

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nr 1

Saproxylic beetles are essential for the proper functioning of forest ecosystems. However, intensive forest management has led to the disappearance of suitable microhabitats of many species associated with dead wood. Cucujus cinnaberinus is an endangered saproxylic beetle which develops under the bark of dead wood. The species usually occurs in protected areas, however, some populations inhabit long-term managed forests in Central Europe. In this study, we analyzed the effect of nine silviculture-related and decay-related factors on the C. cinnaberinus microhabitat selection in managed forests. We found that potential sun exposure, bark thickness, dead wood moisture and the hardness of dead wood have a significant effect on the C. cinnaberinus microhabitat selection. The species prefers sun-exposed dead wood with thicker bark at an intermediate stage of decay with undecomposed xylem, but avoids completely dry pieces. Furthermore, we found no confirmation of a direct connection between dead wood diameter and the occurrence of C. cinnaberinus. We stressed that logging residues or stumps are mostly unsuitable for C. cinnaberinus development.

13

Phytoparasitic nematodes of forest ecosystems of the Ukrainian Carpathians

75%

Kozlowski M.

Wiadomości Parazytologiczne

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1999

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tom 45

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nr 4

14

Chemical properties of litter of forest and grassland ecosystems: transect studies in Siberia [Russia]

75%

Bienkowski P., Titlyanova A. A., Shibareva S. V.

Polish Journal of Ecology

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2006

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tom 54

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nr 1

The aim of this paper was to study comparatively the amount, chemical composition and energy content of litter from forest and grassland ecosystems along a transect in Central Siberia, running from the north (68°N, Forest tundra) to the south (50°N, Dry steppes); it is about 2 000 km. In the boreal forests litter standing crop ranges from 15 to 78 t·ha⁻¹ d.w., in subboreal birch stands – it is about 17 t·ha⁻¹ d.w. and in grasslands – the litter standing crop decreases southward along the transect from 6 to 1.5 t·ha⁻¹ d.w. All kinds of litter are rich in reduced compounds and have negative oxidation degree. Nevertheless oxidation degree increased from North to South in both ecosystem groups: from –0.6 to –0.3 in the boreal forests and from –0.5 to –0.2 in the subboreal ecosystems. The chemical composition of litter is specific and differs from both initial substrates, i.e. phytomass and products of humification. The litter contains as many carbon as fulvic acids, as many oxygen as humic acids and much more hydrogen than both acids together. Energy content values of litter were estimated to be lower than that of humic acids and higher than energy contents of fulvic acids. The transformation of litter organic substances seems to be shifted to the formation of fulvic acids. The content of minerals in litter changed in both series (forest and grassland) in the following order Si> Ca> F> Al> S> Mg> K> P> Na.

15

Sulphur input to the Niepolomice Forest: changes during 30 years [Southern Poland]

75%

Szarek-Lukaszewska G.

Polish Journal of Environmental Studies

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2003

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tom 12

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nr 2

The Niepołomice Forest, a large forest complex typical of Central European lowlands, is located near an urban-industrial agglomeration in southern Poland. During the past 20 years, SO₂ emissions from industry decreased from 75,000 t yr⁻¹ to 6000 t yr⁻¹. Concentration of SO₂ in the air, and pH, SO₄⁻² concentration in bulk precipitation were measured during the last 11 years and compared with data from the 1970s. The spatial distribution of concentrations and deposition of S were calculated on the basis of 30 bulk precipitation samples in 1999-2000. Mean annual concentration of SO₂ in the air was 8.25 μg m⁻³ in 2000, that is 2.5 times lower than during the period 1967-1978. At the beginning of the 1990s the concentration of SO₂ exceeded the critical level for plants during 3% of the days over the year, and at the end of the 1990s only on single days. In 1999 and 2000 the yearly mean concentration of S-SO₄⁻² in bulk precipitation in the Niepołomice Forest was 1.11 mg l⁻¹, ranging between 0.99 and 1.27 mg l⁻¹ in the forest complex. The yearly mean sulphur deposition (S-SO₄⁻²) was 8.1 kg ha⁻¹, varying from 7.3 to 8.9 kg ha⁻¹. The present concentrations and deposition of S-SO₄ were a quarter those of 1974-1978. The spatial distribution of S deposition pointed to the influx of S compounds to the Niepołomice Forest with air masses from the west. The yearly mean pH of atmospheric precipitation was 4.64 (1999-2000), and was steady within the forest complex. In the Niepołomice Forest, atmospheric precipitation was more acid recently than in the 1970s.

16

Input of chemical elements to the forest ecosystem on the Carpathian foothills [S Poland]

75%

Szarek-Lukaszewska G.

Polish Journal of Ecology

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1999

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tom 47

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nr 2

17

Water repellency of mountain forest soils in relation to impact of the katabatic windstorm and subsequent management practices

63%

Simkovic I., Dlapa P., Simonovicova A., Ziegler W.

Polish Journal of Environmental Studies

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2009

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tom 18

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nr 3

443-454

Even though massive winds are significant disturbing factors for forest ecosystems, studies assessing topsoil properties in relation to wind-induced changes in forest floor and, specifically, works dealing with soil water repellency are lacking. On the other hand, the majority of works aimed at the wettability of soil have been carried out on soils from arid or semiarid climatic regions. Besides that, much less attention has been dedicated to soil water repellency in boreal-temperate regions and mountainous areas in particular. Here we report on water repellency of topsoil in mountainous region of the High Tatras of northern Slovakia (central Europe), where katabatic windstorm have blown down app. 12,500 hectares of forest canopy. Different management practices applied on windblown areas together with fire impact have resulted in four types of sites in the area: harvested, reference, left on self-recovery and struck by wild-fire. In order to cover the diversity of topsoil conditions, samples were taken at four representative sites. Results of WDPT and MED measurements show that a great portion of samples exhibited considerable degree of water repellency. It was found that there are significant differences in actual water repellency and field water contents between particular groups of samples taken at individual sites. Results of multiple regression analysis showed that water repellence of topsoil material is significantly controlled by water and organic carbon contents. Besides, for fire-unaffected soils it was found that the degree of water repellence is closely related to detected values of soil reaction as well. Explained portions of WDPT and MED variances ranged from 45 up to 72%.

18

Usage of ecosystem forest functions evaluation for the assessment of investment project realization influence to forest ecosystems on the example of natural preserve Klanovicky Les - Cyrilov

63%

Schneider J., Kupec P., Melicharova A., Domokosova K., Vyskot I.

Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria

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2008

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tom 07

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nr 2

29-38

19

Height changes of a five-year old pine plantation depending on the method of management of cutting residues and way of soil preparation

63%

Gornowicz R., Pilarek Z., Galazka S.

Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria

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2007

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tom 06

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nr 3

20

Biomass of the xerothermic oak ecosystem on a site of community importance, BG0001040 "Zapadna Stara Planina i Predbalkan", Bulgaria

63%

Lyubenova M., Dimitrova V., Georgieva N., Dimitrov D.

Drewno. Prace Naukowe. Doniesienia. Komunikaty

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2014

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tom 57

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nr 192

The belowground and aboveground biomass was estimated for the tree story, sproutsand seedling regeneration in a representative Quercus frainetto – Quercus cerris ecosystem on “Zapadna Stara planina i Predbalkan”, a Site of Community Importance (SCI). The biomass was measured by destructive sampling (on sample or “model trees” representing three calculated density classes for each species and cut at the stump) of leaves, annual and perennial branches, wood, bark and root components. The belowground (root) biomass was also calculated from a subsample. The data obtained were compared to the results of previous studies and the values on the Bazilevich and Rodin [1971] scale. The ecological status of the forest ecosystem studied and its functional efficiency are discussed based on the study results and specific climate data.

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