Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "forest ecosystem" wg kryterium: Temat

  Lista filtrów
Wyrównaj
Wyświetlanie 1-25 z 89
Tytuł:
Terrestrial snails typical of forest ecosystems of Wielkopolska
Autorzy:
Jankowiak, A.
Kalinowski, T.
Czyz, M.
Powiązania:
https://bibliotekanauki.pl/articles/83833.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
Tematy:
terrestrial snail
snail
forest ecosystem
Wielkopolska region
species distribution
Źródło:
Folia Malacologica; 2012, 20, 1
1506-7629
Pojawia się w:
Folia Malacologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Profile variability of lithium content in soils of selected forest ecosystems
Autorzy:
Malczyk, P
Powiązania:
https://bibliotekanauki.pl/articles/1450642.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
total lithium
forest ecosystem
soil profile
soil
lithium content
forest soil
distribution
terrestrial ecosystem
Opis:
The distribution of total lithium content with depth was studied in soils of selected forest ecosystems, with regard to their physicochemical properties and possible anthropogenic impact. The six soil profiles, representing forest soils, were selected for the study: Udipsamments formed from sandr sand, eolian sand and alluvial sand, and Haplorthods Humic formed from eolian sand, Dystrochrepts formed from alluvial silt and Eutrochrepts formed from boulder loam. The total Li content was determined after previously dissolving the samples in a mixture of concentrated acids: hydrofluoric and nitric (HF+HNO3). The content of Li in solutions was determined using the FAS method on PU-9100 X Philips spectrometer. The total lithium content in studied soils under investigations occurs in range of 1.63 to 229.68 mg kg-1 and was considerably lower in organic horizons (1.63-8.07 mg kg-1 ) than in mineral (17.58-229.68 mg kg-1). The concentration of lithium in subhorizons of forest litter increases according to the litter decomposition degree (01<0f<0fh). The Li concentrations found in all forest soils formed from sand were much higher than its natural content in surface mineral horizons of arable soils 1.30-56.00 mg kg-1. The total lithium content in studied soils was negative statistically correlated with the content of organic carbon (-0.6062), silt and clay fraction (-0.7131 and -0.6322), hydrolytic acidity (-0.5222), sum of exchangeable bases (-0.6196) and cation exchange capacity (-0.6277).
Źródło:
Acta Agrophysica; 2001, 50; 189-195
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Phytoparasitic nematodes of forest ecosystems of the Ukrainian Carpathians
Autorzy:
Kozlowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/841365.pdf
Data publikacji:
1999
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
parasite
Ukraine
phytoparasitic nematode
forest ecosystem
Carpathians Mountains
nematode
Źródło:
Annals of Parasitology; 1999, 45, 4
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Can payments for ecosystem services contribute to sustainable development in the Brazilian Amazon?
Autorzy:
Seehusen, S.E.
Powiązania:
https://bibliotekanauki.pl/articles/38733.pdf
Data publikacji:
2009
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
forest ecosystem service
sustainable development
Brazil
Amazon River
ecological economics
Opis:
The Brazilian Amazon supplies the world with several forests ecosystem services, many of which are essential to sustain human life on earth. Nevertheless, the Amazon is threatened by deforestation and degradation implying in reductions on the provision of these. According to economic theory, as ecosystem services are positive externalities and public goods, agents do not take into consideration the costs and benefits of their consumption and production of ecosystem services into their economic decisions. To address this problem payment for ecosystem services – PES – emerged, aiming to provide a source of income to the poor people living in forest areas, stimulating them not to deforest, and making agents who are indebted with the nature pay for their overconsumption of ecosystem services. There is still controversy about possible impacts of the instrument. This article accesses the potentials of PES to contribute to sustainable development in the Brazilian Amazon using the three goals related to sustainable development proposed by the ecological economics theory: efficient allocation, fair distribution, and sustainable scale. The study shows that PES as a pure market approach is unlikely to solve neither the scale nor the distribution problems. Therefore, for PES to achieve sustainable development, markets for ecosystem services should first be constrained by a maximum sustainable scale. Then, measures should ensure fair distribution in second place. Only after these questions have been tackled, it is desirable that agents interact in the ecosystem services markets to lead to an efficient allocation of resources.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2009, 51, 1
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Slope aspect and altitude effect on selected soil organic matter characteristics in Beskid Mountains forest soils
Autorzy:
Staszel, Karolina
Błońska, Ewa
Lasota, Jarosław
Powiązania:
https://bibliotekanauki.pl/articles/2040996.pdf
Data publikacji:
2021
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
carbon stock
climatic factors
dehydrogenases activity
forest ecosystem
nitrogen stock
Opis:
In the era of dynamic climate change, it is important to have knowledge on the interactions between climatic factors and processes occurring in the soil environment. The present study aimed to determine how slope aspect and altitude above sea level influence carbon and nitrogen accumulation and dehydrogenases activity of forest soils. The study was conducted in the Beskid Żywiecki in the south-facing part of Poland. Soils of the same texture, with similar vegetation species composition, in different altitude variants (600, 800, 1000 and 1200 m above sea level) and different north-facing and south-facing slope aspect were selected for the study. For each height and slope aspect variant, samples were collected from the surface horizons of soils for further analyses. The basic chemical properties and dehydrogenases activity of the soil samples were determined. Carbon and nitrogen stocks in the surface horizons of the soils were calculated. The analyses confirmed the influence of location conditions on the carbon and nitrogen stocks in mountain forest soils. The stock of carbon and nitrogen increased with the height up to 1000 m a.s.l. In the soils at the highest altitude, the reserve of carbon and nitrogen decreased regardless of the slope aspect variant. There were no statistically significant differences in carbon and nitrogen stocks between slope aspect variant. The highest dehydrogenases activity was associated with the organic horizons of the soils at the lowest altitude in height gradient. In our study, higher dehydrogenases activity was observed in the north-facing slope soils, and this finding can be explained by more stable thermal conditions.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2021, 63, 3; 214-224
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Plant-to-soil pathways in the subarctic - qualitative and quantitative changes of different vegetative fluxes
Autorzy:
Gorbacheva, T. T.
Kikuchi, R.
Powiązania:
https://bibliotekanauki.pl/articles/363218.pdf
Data publikacji:
2006
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
rozkład
fenole
ekosystem leśny
wegetacja
decomposition
phenols
forest ecosystem
vegetation
Opis:
Considering plant-to-soil pathways, decomposition of vegetative fluxes such as litter and litterfall is one of the important processes that adjust the carbon cycle and nutritional elements in the formation of a forest's organogenic horizon. However, there is little information available on this subject, and the fractional structure (amount, type and interrelation) of organic matter also seems to receive little attention. Using 7 different vegetative samples, a field study was performed over 3 years to find the relation between phenolics content and mass losses in the subarctic region (N66° and E31°). In addition, climate effects on this relation were investigated. The data obtained from this field study testify that (i) an intensive loss of organic matter occurred in active parts of various litterfalls and (ii) leached phenols were related with mass losses (decomposition rates) of vegetative fluxes (litterfalls and litters) to the soil. The statistic analysis suggests that (iii) total mass losses of samples (except litter) were connected with both the temperature sum and the precipitation sum, and (iv) phenolics losses also had a similar trend in different kinds of litterfall.
Źródło:
Environmental Biotechnology; 2006, 2, 1; 26-30
1734-4964
Pojawia się w:
Environmental Biotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Forest species mapping using airborne hyperspectral APEX data
Autorzy:
Tagliabue, Giulia
Panigada, Cinzia
Colombo, Roberto
Fava, Francesco
Cilia, Chiara
Baret, Frédéric
Vreys, Kristin
Meuleman, Koen
Rossini, Micol
Powiązania:
https://bibliotekanauki.pl/articles/1035947.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
Vegetation map
Hyperspectral
Aerial
Supervised classification
Multi-temporal dataset
Forest ecosystem
Opis:
The accurate mapping of forest species is a very important task in relation to the increasing need to better understand the role of the forest ecosystem within environmental dynamics. The objective of this paper is the investigation of the potential of a multi-temporal hyperspectral dataset for the production of a thematic map of the dominant species in the Forêt de Hardt (France). Hyperspectral data were collected in June and September 2013 using the Airborne Prism EXperiment (APEX) sensor, covering the visible, near-infrared and shortwave infrared spectral regions with a spatial resolution of 3 m by 3 m. The map was realized by means of a maximum likelihood supervised classification. The classification was first performed separately on images from June and September and then on the two images together. Class discrimination was performed using as input 3 spectral indices computed as ratios between red edge bands and a blue band for each image. The map was validated using a testing set selected on the basis of a random stratified sampling scheme. Results showed that the algorithm performances improved from an overall accuracy of 59.5% and 48% (for the June and September images, respectively) to an overall accuracy of 74.4%, with the producer’s accuracy ranging from 60% to 86% and user’s accuracy ranging from 61% to 90%, when both images (June and September) were combined. This study demonstrates that the use of multi-temporal high-resolution images acquired in two different vegetation development stages (i.e., 17 June 2013 and 4 September 2013) allows accurate (overall accuracy 74.4%) local-scale thematic products to be obtained in an operational way.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2016, 20, 1; 28-33
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Forest ecosystem as a source of CO2 during growing season: relation to weather conditions
Autorzy:
Taufarova, K.
Havrankova, K.
Dvorska, A.
Pavelka, M.
Urbaniak, M.
Janous, D.
Powiązania:
https://bibliotekanauki.pl/articles/26563.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
forest ecosystem
carbon dioxide
source
growing season
weather condition
Norway spruce
Opis:
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.
Źródło:
International Agrophysics; 2014, 28, 2
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Increasing Sustainability of European Forests: Modelling for Security Against Invasive Pests and Pathogens under Climate Change
Autorzy:
Nowakowska, J.A.
Powiązania:
https://bibliotekanauki.pl/articles/38386.pdf
Data publikacji:
2013
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
forest
Europe
European project
ISEFOR project
modelling
invasive pest
pathogen
climate change
forest health
forest ecosystem
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2013, 55, 1
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mycorrhizal status of Pinus sylvestris L. nursery stock in Poland as influenced by nitrogen fertilization
Autorzy:
Rudawska, M.
Leski, T.
Gornowicz, R.
Powiązania:
https://bibliotekanauki.pl/articles/41277.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
forest ecosystem
Polska
nursery
Pinus sylvestris
nitrogen fertilization
ectomycorrhizal fungi
fungi
morphotype
Opis:
Indigenous mycorrhizal colonisation of one (1/0) and two (2/0) year old Scots pine (Pinus sylvestris L.) seedlings from forest nurseries situated in the north-west part of Poland was investigated. Seedlings were fertilized after a schedule designed to satisfy their requirements which resulted from soil analysis of each nursery. In autumn needle nitrogen concentration and mycorrhizal status were estimated. As a rule seedlings 1/0 obtained high doses of fertilizers, and their needle nitrogen concentration highly exceeded the recommended optimal level above which mycorrhiza formation is greatly restricted. Highly negative correlation was found between the nitrogen status of foliage and mycorrhizal quantitative and qualitative colonisation estimated in the abundance class of 0-5. When internal nitrogen level was low, several ectomycorrhizal morphotypes were found on roots of tested plants. Excessive nitrogen fertilization decreased root ramification pattern and along with increased pH promoted ectendomycorrhizal symbiosis. Two-year-old seedlings (2/0) were characterised by significantly lower nitrogen concentration in the needles which resulted in much higher ectomycorrhizal colonisation. Ectendomycorrhizal symbiosis in the case of 2/0 seedlings was scarce. The results indicate that natural colonisation in nurseries is dependent on the soil management practices, especially nitrogen fertilization. Optimalization of nitrogen fertilization may intensify ectomycorrhizal colonisation of the nursery stock from indigenous fungal species and improve the growth of Scots pine seedlings in bare-root nurseries and plantations.
Źródło:
Dendrobiology; 2001, 46
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chemical criteria in the critical loads concept
Kryteria chemiczne w koncepcji ładunków krytycznych
Autorzy:
Mill, W.
Powiązania:
https://bibliotekanauki.pl/articles/795554.pdf
Data publikacji:
2002
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
atmosphere pollution
critical load
acid deposition
ecosystem protection
environment pollution
chemical criterion
soil chemistry
forest ecosystem
Opis:
The critical loads concept has been developed under the Convention on Long-Range Transboundary Air Pollution as a scientific basis for the negotiations of its environmentally effect-oriented protocols. The basic idea of this concept is to balance the atmospheric depositions which a given ecosystem is exposed to with the capacity of this ecosystem to buffer the input in the system. Accordingly, a critical loads approach to control acidic emissions in relation to their ecological effects has been introduced. Critical load is defined as "a quantitative estimate of an exposure to one or more pollutants below which significant harmful effects on specified sensitive elements of the environment do not occur according to present knowledge". In this study, the critical loads approach has been applied to the problem of forest ecosystem acidification resulting from sulfur and nitrogen emission. There are several criteria that may be used as critical chemical limits in forest soil solution. These are critical pH, critical Al concentration, critical BC/A1 ratio and Al depletion criterion. The reliability of the calculated critical loads is strongly influenced by the quality of the chemical criteria applied. For abiotic aspects like soil chemistry or ground water quality the critical limits are clear because the dose-effect relations are quite well understood. For biotic indicators like root damage it is more difficult to find critical limits which can be used as threshold levels below which effects are negligible. The process of root damage is quite a complex one and a combination of side factors like droughts and adverse soil chemical condition may contribute to it. So, when a single critical limit such as the ВС/Al ratio is used, this will inherently lead to a considerable uncertainty in the value of this critical limit. Critical limits are based on laboratory experiments during a limited period of time in which sample roots are subject to constantly elevated BC/A1 ratios. One of major problems in applying this kind of criteria is the interpretation of the laboratory bioassay results in relation to field conditions. The aim of this paper is to summarize the current knowledge and to formulate the major questions that should be answered to abate the existing uncertainty in relating the anthropogenically modified soil chemistry and the reaction of forest ecosystems.
Koncepcja ładunków krytycznych powstała w ramach Konwencji w Sprawie Transgranicznego Zanieczyszczania Powietrza na Dalekie Odległości, jako naukowa podstawa dla negocjowania jej protokołów zorientowanych na oddziaływania ekologiczne. Podstawowym założeniem tej koncepcji jest bilansowanie atmosferycznej depozycji kwaśnej ze zdolnością ekosystemów naturalnych do jej buforowania. Jako ilościową miarę wrażliwości ekosystemów lądowych i wodnych na depozycję kwaśną wprowadzono pojęcie ładunku krytycznego. Ładunek krytyczny definiowany jest jako: „największą depozycję związków kwaśnych, niewywołującą zmian chemicznych, prowadzących do długotrwałych, szkodliwych skutków dla struktury i funkcjonowania ekosystemów, zgodnie z najnowszym stanem wiedzy". W niniejszych badaniach koncepcję ładunków krytycznych wdrożono do oceny problemu zakwaszania ekosystemów leśnych, w wyniku emisji związków siarki i azotu. Istnieje szereg kryteriów mających zastosowanie w określaniu progowego składu chemicznego przesączu gleb leśnych, takich jak: odczyn, krytyczne stężenie glinu aktywnego, krytyczny stosunek ВС : Al i krytyczne stężenie glinu wymiennego. Wiarygodność wielkości wyznaczanych ładunków krytycznych jest silnie powiązana z rodzajem wybranego kryterium chemicznego w układach abiotycznych, takich jak: struktura chemiczna gleb lub wód gruntowych. Wartości progowe są jednoznaczne, bowiem w tego typu układach zależności dawka-odpowiedź są dobrze wyjaśnione. W przypadku takich wskaźników biotycznych jak np. uszkodzenie systemu korzeniowego wskazanie wartości krytycznych, poniżej których to uszkodzenie nie wystąpi, jest trudniejsze. Proces uszkadzania systemów korzeniowych jest bardzo złożony i oprócz czynników chemicznych uczestniczą w nim takie czynniki uboczne jak: susze, mrozy, choroby grzybowe itp. Wartości progowe ustanawiane są w oparciu o badania laboratoryjne o określonym czasie trwania w trakcie, którego próbki korzeni poddawane są ciągłemu oddziaływaniu np. dobieranych wartości stosunku ВС : Al. Jednym z podstawowych problemów w stosowaniu tak wyprowadzonych kryteriów jest wiarygodność przeniesienia wyników laboratoryjnych na warunki polowe. W artykule tym podsumowano aktualny stan wiedzy i sformułowano zagadnienia wymagające dalszych badań celem zmniejszenia niepewności w opisie zależności pomiędzy antropogenicznie modyfikowanym statusem chemicznym gleb, a reakcją ekosystemów leśnych.
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 2002, 481, 1
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena jakości powietrza na podstawie metody lichenoindykacyjnej
Air quality estimation using the lichenoindicative method
Autorzy:
Lewandowska, D.
Powiązania:
https://bibliotekanauki.pl/articles/357292.pdf
Data publikacji:
2015
Wydawca:
Politechnika Śląska
Tematy:
porosty
plecha porostu
biomonitoring
zanieczyszczenie powietrza
ekosystem leśny
lichens
lichen thallus
air pollution
forest ecosystem
Opis:
W artykule przedstawiono ocenę jakości powietrza na terenie gminy Sadowne (przez którą przebiega droga krajowa nr 50) przy pomocy metody lichenoindykacyjnej.
This article discusses the air quality estimation in the municipality of Sadowne (through which the national road No. 50) using the lichenoindicative method.
Źródło:
Archiwum Gospodarki Odpadami i Ochrony Środowiska; 2015, 17, 1; 89-104
1733-4381
Pojawia się w:
Archiwum Gospodarki Odpadami i Ochrony Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmienność runa leśnego w grądzie wysokim rezerwatu Las Bielański pod wpływem ruchu turystycznego
Tourist traffic as a factor affecting ground cover in an oak-hornbeam association of the Las Bielański Reserve
Autorzy:
Grutkowska, Anita
Powiązania:
https://bibliotekanauki.pl/articles/1964476.pdf
Data publikacji:
2010-12-31
Wydawca:
Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
Tematy:
ruch turystyczny
Las Bielański
grąd wysoki
ekosystem leśny
forest ecosystem
Las Bielanski
tourist traffic
ground cover
Opis:
Las Bielański covers 150 hectares, it is a unique remnant of the ancient Mazowiecka Forest. At present 130 hectares out of 150 hectares are a nature reserve, where the influence of humans is limited only to tourist paths. The aim of this research was to estimate a possible impact of use the path by humans on the development of nearby plants. Namely, whether the presence of the path induces any changes, and if so, what sort and scope of the changes is seen. A 125 m long section of a tourist path, located in an oak-hornbeam association was chosen. Three sampling lines parallel to the path were traced: line A – 15-30 cm distant from the path’s edge, line B – 5 m away, and line C – about 10 m away from the path’s edge (Fig. 1). Plants were collected using sample squares of 0.1 m2 in area, distributed evenly along each line (25 samples per line, i.e., 75 samples altogether). The data collected in the field were analyzed statistically. Most of the species exhibit a clumped distribution of the number of sprouts (Tab. 1). This phenomenon is seen in each line. In order to demonstrate the differences in the abundance of sprouts, as well as differences in plant cover between the samples taken along the three lines, nonparametric statistics were applied – the Mann-Whitney test and Kruskal-Wallis ANOVA. The results of those analyses show for restricted plant cover in the line closest to the path: the percentage of the coverage and the number of sprouts per sample in line A are lower than those estimated for lines B and C (Fig. 3). The species occurring most frequently are those typical of the oak-hornbeam association. The estimate of frequency is the lowest for all the species directly in the closest vicinity of the path (Fig. 2). Seasonal variability is evident, too. No presence of animals was noticed within the distance of 5 m from the path’s edge. The majority of animal traces occurred around line C, about 10 m distance from the path. Particular attention was paid to the distribution of hornbeams (Carpinus betulus) – the species in the oak-hornbeam association. No significant differences were found between the three lines as far as the number of hornbeam sprouts and frequency is concerned (Fig. 4 and 5). The number of sprouts of this species is the highest in spring, and it decreases gradually, due to heavy mortality of seedlings and juvenile specimens, with the progressive light shortage. It means the tourist traffic is not the only factor affecting plant abundance.
Źródło:
Studia Ecologiae et Bioethicae; 2010, 8, 2; 93-106
1733-1218
Pojawia się w:
Studia Ecologiae et Bioethicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Soil enzymatic activity in deteriorated forest ecosystems in the operation area of the Pulawy S.A. Nitrogen Factory
Autorzy:
Bielinska, E J
Domzal, H.
Powiązania:
https://bibliotekanauki.pl/articles/1450115.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
Pulawy Forest Inspectorate
forest ecosystem
nitrogen work
enzyme activity
biological property
forest soil
Zyrzyn commune
biochemical property
soil
Pulawy Nitrogen Factory
operation area
forest habitat
soil property
degraded ecosystem
anthropogenic ecosystem
environmental deterioration
Opis:
The present research (1998-1999) was carried out to evaluate soil enzymatic activity in the deteriorated forest ecosystems within the operation range of the Puławy S.A. Nitrogen Factory. Investigation covered podzolic soils from strong and medium forest pollution zones. Objects from the Pulawy Forest Inspectoratejwere represented, i.e. samples from the Puławy district (Inspectorate Wronów) and Żyrzyn district (Inspectorate Zagórki). The obtained results indicate high degree of soil environment deterioration in the investigated forest habitats, in the form suppressed enzymatic activity and deformation of chemical properties. A significant increase in the enzymatic soil activity with the increasing distance from the nitrogen factory was observed. Changes in the activity of soil enzymes were related to the soil chemical properties.
Źródło:
Acta Agrophysica; 2001, 51; 7-13
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trace elements in soils of upper zone of spruce forest on Szrenica Mount and the Kowarski Grzbiet range in the Karkonosze Mountains
Zawartość pierwiastków śladowych w glebach regla górnego Szrenicy i Kowarskiego Grzbietu w Karkonoszach
Autorzy:
Waroszewski, J.
Kabala, C.
Szopka, K.
Powiązania:
https://bibliotekanauki.pl/articles/14109.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
trace element
soil
Karkonosze Mountains
spruce forest
upper zone
soil contamination
forest ecosystem
monitoring network
lead
zinc
copper
soil sample
Opis:
New regular examination of soil contamination with trace elements (Pb, Zn, Cu) in the upper zone of spruce forest in the western (Mount Szrenica) and eastern (Kowarski Grzbiet range) Karkonosze Mountains was carried out as part of the monitoring network of forest ecosystems in the Karkonosze Mountains National Park. Soil samples were taken at the following three depths: forest litter (the whole layer), 0-10 cm and 10-20 cm. Clearly raised concentrations of lead were found, particularly in forest litter (mean 83.2 mg⋅kg-1) and in horizons 0-10 cm (mean 73.3 mg⋅kg-1). Copper and zinc occurred in smaller amounts, in the ectohumus layer 47.5 mg Zn⋅kg-1 and 23.8 mg Cu⋅kg-1 (mean concentrations), and in the layer 0-10 cm – 33.7 mg Zn⋅kg-1 and 19.9 mg Cu⋅kg-1. Zinc and copper concentrations in soils of the upper spruce forest zone did not increase with altitude above mean sea level, and were slightly higher in the eastern part of Karkonosze Mts. (the Kowarski Grzbiet). Concentrations of lead were apparently higher in the western part of the Karkosze Mts. and increased with altitude AMSL.
W strefie regla górnego Karkonoszy zachodnich (Szrenica) i wschodnich (Kowarski Grzbiet) przeprowadzono analizę zanieczyszczenia gleb pierwiastkami śladowymi (Pb, Zn, Cu) opartą na monitoringu ekosystemów leśnych Karkonoskiego Parku Narodowego. W tym celu pobrano próbki z trzech głębokości: próchnicę nadkładową (w całej miąższości), 0-10 cm i 10-20 cm. Stwierdzono wyraźnie podwyższoną zawartość ołowiu, szczególnie w próchnicach nadkładowych (średnio 83,2 mg⋅kg-1) i warstwie 0-10 cm (średnio 73,3 mg⋅kg-1). Miedź i cynk występują w mniejszych ilościach, w ektohumusie średnio 47,5 mg Zn⋅kg-1 i 23,8 mg Cu⋅kg-1, a w warstwie 0-10 cm średnio 33,7 mg Zn⋅kg-1 i 19,9 mg Cu⋅kg-1. Zawartość cynku i miedzi w glebach regla górnego nie zwiększa się z wysokością n.p.m. i jest nieco wyższa we wschodniej części Karkonoszy (Kowarski Grzbiet) niż w zachodniej (Szrenica). Zawartość ołowiu jest wyraźnie wyższa w zachodniej części Karkonoszy i zwiększa się z wysokością n.p.m.
Źródło:
Journal of Elementology; 2009, 14, 4
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Current state of Picea abies stands in the Ukrainian Carpathians
Autorzy:
Guz, M
Powiązania:
https://bibliotekanauki.pl/articles/41137.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
international conference
Europe
forest ecosystem
plant breeding
tree
Norway spruce
Picea abies
environmental function
forest type
composition
productivity
Carpathians Mountains
Ukraine
Opis:
The paper provides a detailed characterisation of Norway spruce stands in the Ukrainian Carpathians. The majority of natural spruce stands in Ukraine occur in Polesie, while artificial regeneration is spread all over the country. The most densely forested part of Ukraine is the Carpathian region with 41.1% of forest-covered area (2.1 million ha). Spruce-dominated stands occupy about 700 thousand hectares (30%) of the forested area of the state forest fund in the Ukrainian Carpathians, and another 10% of the mixed forests contain 10 to 30% of spruce. Besides pure spruce stands, there are beech-spruce, beech-fir-spruce, and cedar-spruce stands. The most productive stands (750-900m3 stem wood per ha) grow in the middle and lower parts of slopes at 1100-1200 m a.s.l. which have favourable soil and climate conditions. Since the second half of the 20th century, spruce stands in the substantial part of the Ukrainian Carpathians have declined under the influence of complex anthropogenic and natural factors. Although the present condition of most spruce forests in this region remains satisfactory, the degradation processes and the ban imposed in 2006 on planting spruce on non-spruce forest sites (in state forests) may decrease their area in the longer term.
Źródło:
Dendrobiology; 2009, 61 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chorological and conservation status of the endemic cypress, Cupressus atlantica Gaussen, in the High Atlas (Morocco)
Autorzy:
Sekiewicz, K.
Sekiewicz, M.
Romo, A.
Didukh, Y.
Fennane, M.
Boratynski, A.
Powiązania:
https://bibliotekanauki.pl/articles/41144.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
chorology
conservation status
endemic plant
cypress
Cupressus atlantica
Cupressaceae
forest ecosystem
degraded ecosystem
High Atlas Mountains
plant conservation
plant geography
Morocco
Opis:
We present a study of the distribution, ecology and conservation status of Cupressus atlantica, an endemic tree of the High Atlas (Morocco). The main populations of this species grow in a reduced area along the N’Fiss valley in the Central High Atlas and are gradually receding. Particular populations are increasingly fragmented and the total area covered by the cypress woodland has decreased to less than a third of the surface occupied in the 1930s. Overgrazing reduces the woodlands’ regenerative capacity, and the exploitation of the wood, linked to traditional uses by the rural society of the N’Fiss valley, directly reduces the number of trees. Great efforts being made to protect the species by the Haut Commissariat aux Eaux et Forêts are having some effect in recent years.
Źródło:
Dendrobiology; 2014, 71
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bieganie jako forma rekreacji w lasach Polski i Republiki Czeskiej - zalety i wady
Running as a form of recreation in the Polish and Czech forests – advantages and disadvantages
Autorzy:
Janeczko, E.
Fialova, J.
Tomusiak, R.
Woźnicka, M.
Prochazkova, P.
Powiązania:
https://bibliotekanauki.pl/articles/980339.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lasy
rekreacja
bieganie
preferencje spoleczne
badania ankietowe
Polska
Czechy
recreation
sport
forest ecosystem services
internet questionnaire
social preferences
Opis:
The article presents a comparative analysis of social preferences related to running in the forests of Poland and the Czech Republic. The preferences were determined on the basis of a questionnaire distributed in 2016 via social media among people interested in running in in both countries. The survey covered 346 people over 18 years of age in Poland and 294 people from Czech Republic. The questionnaire included questions such as: the frequency of running in the forest, the preferred season for running and average number of running kilometers in the week and the views on advantages and disadvantages of running in forest areas. The results show that there is quite a lot of differences between the preferences of respondents from both of the analyzed countries. Statistical analysis was carried out using the chi−square test. The observed differences relate mainly to the choice of season for running in forests, the frequency of running in the forests, average distance covered in a week and the views on advantages of running in forest areas. The most preferred season for running in Polish forests was summer, then spring, while in Czech ones it was exactly the opposite. Most respondents in Poland run in the forest several times a week, whereas in the Czech Republic – several times a month. The most frequently mentioned advantages of running in Polish forests were: contact with nature, clean air, landscape – pleasant environment. In Czech forests among the most frequently mentioned advantages of running were: contact with nature, good quality surface and clean air. Subsequently, the respondents pointed to the lack of traffic control infrastructure, and lack or a small number of other recreational people. Among the disadvantages of running in the forest, respondents in both counties mentioned mainly: the presence of tick and hunters. Other factors limiting the comfort of running in the forests included: uneven road surface or problems with phone connection. Only the views on the subject of the attractiveness of the forests for running and disadvantages of running in forest areas were not significantly important.
Źródło:
Sylwan; 2019, 163, 06; 522-528
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Precipitation and duff fall as natural sources of nitrogen and phosphorus for forest soils in the Slowinski National Park
Opad atmosferyczny i opad roślinny jako naturalne źródło azotu i fosforu dla gleb leśnych w Słowińskim Parku Narodowym
Autorzy:
Parzych, A.
Trojanowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/85037.pdf
Data publikacji:
2006
Wydawca:
Akademia Pomorska w Słupsku
Tematy:
precipitation
natural source
nitrogen
phosphorus
forest soil
Slowinski National Park
fall
plant
mixed forest
wood
leaf
needle
mineralization
ground cover
tree root
forest ecosystem
Opis:
Every year forest soils are enriched with nitrogen and phosphorus compounds due to the fall of leaves and litter of conifer needles, mineralization of ground cover and decaying tree roots, as well as precipitation. The process has been examined in two forest ecosystems: a mixed forest (plot I) and a young wood (plot II). The overall fall of duff collected in the young wood of the Słowinski National Park (plot II) has been 3.014 t/ha·year, which constitutes 69.35% of the fall collected in the mixed forest (plot I) on this territory (4.346 t/ha·year). The maximum intensity of duff fall occurred in autumn months and constituted 62.36% and 64.20% of annual fall respectively. Totally, 46.96 kg/ha·year of N and P were supplied to the soil of the plot I and 22.04 kg/ha·year in the case of the plot II. The precipitation enriched the soils of the mixed forest by 33.66 kg/ha·year of nitrogen and 1.19 kg/ha·year of phosphorus, the soils of the young wood – by 23.06 kg/ha·year of nitrogen and 0.92 kg/ha·year of phosphorus.
Każdego roku gleby leśne wzbogacane są związkami azotu i fosforu pochodzącymi z opadających liści i igliwia, mineralizacji runa leśnego, gnijących korzeni drzew i krzaków oraz opadów atmosferycznych. Procesy te badano w dwóch ekosystemach leśnych Słowińskiego Parku Narodowego: w lesie mieszanym (działka I) i borze swieżym (działka II). Ogólny opad ścioły zebrany w swieżym borze wynosił 3,014 t ha-1rok-1 i był mniejszy niż zebrany w lesie mieszanym (4,346 t ha-1rok-1). Najbardziej intensywny opad ścioły obserwowano w miesiącach jesiennych i stanowił on odpowiednio 62,36% i 64,20% rocznego opadu. Ogólnie w ten sposób wprowadzono 46,96 kg ha-1rok-1 azotu i fosforu do gleby działki I i 22,04 kg ha-1rok-1 do gleby działki II. Opad atmosferyczny wzbogacił gleby lasu mieszanego w 33,66 kg ha-1rok-1 azotu i 1,19 kg ha-1rok-1 fosforu, a gleby boru swieżego odpowiednio 23,06 kg ha-1rok-1 i 0,92 kg ha-1rok-1.
Źródło:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2006, 10
1643-0115
Pojawia się w:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vegetation of the 'Uroczysko Jary' Nature Reserve near Zlotow
Roslinnosc Rezerwatu Przyrody 'Uroczysko Jary' kolo Zlotowa
Autorzy:
Gorski, P.
Janyszek, S.
Powiązania:
https://bibliotekanauki.pl/articles/878426.pdf
Data publikacji:
2005
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu
Tematy:
forest ecosystem
rush
geobotany
Polska
meadow
plant community
botany
Uroczysko Jary Nature Reserve
vegetation
marsh
Wielkopolska region
peat bog
Źródło:
Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana; 2005, 08
1896-1908
Pojawia się w:
Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of provenance transfer on the growth and survival of Picea abies provenances
Autorzy:
Krajmerova, D
Longauer, R.
Pacalaj, M.
Gomory, D.
Powiązania:
https://bibliotekanauki.pl/articles/41447.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
international conference
Europe
forest ecosystem
plant breeding
tree
Norway spruce
Picea abies
provenance experiment
global warming
adaptation
growth
survival
Opis:
Two provenance experiments with Norway spruce in Slovakia were used to reveal trends in the behaviour of provenances after their transfer. Regressions between the average height and survival of provenances and the differences between the geographic and selected climatic characteristics of the place of origin and provenance plots were significant for most of the characteristics tested. Data from the experiment with Polish and Slovak provenances from 1972 indicated that transfer into warmer regions with a longer vegetation period results in improved height growth and survival, with the exception of survival at initial stages. The experiment from 1964 with a broader altitudinal range of provenance plots, but with unadjusted latest measurements at individual plots available, revealed the best height growth of Slovak Norway spruce provenances after their transfer to sites with the mean annual temperature approximately 1°C higher and with the vegetation period 12 days longer than at places of origin. Transfer into lower altitudes, a warmer climate and a longer vegetation period improved survival. In both experiments, transfer to areas with increased rainfall had a negative effect on growth, which is probably associated with the fact that provenances are not able to exploit additional precipitation for the growth in areas with a colder climate and a shorter vegetation period.
Źródło:
Dendrobiology; 2009, 61 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biomass of the xerothermic oak ecosystem on a site of community importance, BG0001040 "Zapadna Stara Planina i Predbalkan", Bulgaria
Autorzy:
Lyubenova, M.
Dimitrova, V.
Georgieva, N.
Dimitrov, D.
Powiązania:
https://bibliotekanauki.pl/articles/52482.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:
biomass
xerothermic plant
forest ecosystem
oak
plant community
Quercus frainetto-Quercus cerris forest
Zapadna Stara Planina i Predbalkan area
Natura 2000 area
Bulgaria
Opis:
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.
Źródło:
Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2014, 57, 192
1644-3985
Pojawia się w:
Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Abietetum albae plant association from "Murowaniec" nature reserve in Central Poland
Autorzy:
Gorski, P
Powiązania:
https://bibliotekanauki.pl/articles/41341.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Polska
Murowaniec Nature Reserve
plant association
protection strategy
Abietetum albae association
floristic association
silver fir
Abies alba
forest ecosystem
Opis:
The study presents the structure and floristic composition of mixed fir forest at the northern range limit of European silver fir (Abies alba) in Poland. Phytosociological data were collected in the forest reserve “Murowaniec”,which was established to protect mixed forest ecosystems with a large contribution of fir trees. Changes in floristic composition of these coniferous forests in the last 40 years were discussed. Protective measures are suggested in this paper, aiming at conservation of the forest ecosystems of the reserve.
Źródło:
Dendrobiology; 2005, 54; 19-27
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Factors affecting forest soil distribution and properties in the river breaks of the Roztocze Region
Autorzy:
Czarnecka, B
Janiec, B.
Powiązania:
https://bibliotekanauki.pl/articles/1450487.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
river valley
forest ecosystem
plant community
hydrological process
ground water
Jelen River
bog-alder forest
forest soil
geomorphological process
mineral soil
Sopot
organic soil
soil
Roztocze macroregion
soil property
terrestrial ecosystem
distribution
Opis:
Studies on the soils in forest ecosystems in breaks of the rivers Jeleń and Sopot were carried out in the years 1997-1998. Although the rivers differ in length, catchment area, amount of water carried and breadth of the valleys, the most important factors affecting soil formation and their spatial differentiation are similar: bedrock, relief, water drainage, natural type of water management, position of the ground water-table relative to the river water level, and chemistry of spring and soil waters. Steep slopes of the valleys covered with poor and highly acidic podzolic soils are usually overgrown with fir and pine phytocenoses, or rarely, with mixed oak-pine forests. The bottoms are often characterised by longitudinal duality of the flood-plain benches. In the drier area close to the river beds under ash-alder forests, there are more fertile gley soils and gley podzols. Poorer and more acidic localities are occupied by mixed forests with spruce. In permanently moist fragments of the benches at the foot of the slopes and in depressions with stagnant water weakly acidic peat-mud and peat soils occur overgrown with bog-alder forests. Peculiarities of these areas are low peat-bogs suspended even up to 4-6 m above the water-table of the river.
Źródło:
Acta Agrophysica; 2001, 50; 81-93
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Open access to research data on forest ecosystems in Poland
Autorzy:
Grygoruk, D.
Powiązania:
https://bibliotekanauki.pl/articles/1940360.pdf
Data publikacji:
2017
Wydawca:
Politechnika Gdańska
Tematy:
forest ecosystem
open access
open science
raw data
research data
ekosystem leśny
otwarty dostęp
otwarta nauka
dane nieprzetworzone
dane badawcze
Opis:
Studies of forest ecosystems enable gathering important information on the natural environment the development of which is more and more disturbed by the global climate change. The current research on the ecosystem functioning provides data that may be of much value for future analysis and prognostic studies. Modern measurement techniques used in the forest research have a significant influence on the increase in the database resources, especially those concerning the spatial data. Big data requires the use of advanced analytical technologies, such as data warehouses, computer clusters or cloud computing. Consequently, cooperation of specialists from various scientific disciplines, including forestry, geography, climatology and computer science, has become increasingly necessary. The IT system of the Forest Research Institute (FRI) was modernized within the framework of the Operational Programme – Innovative Economy 2007–2013. Its functionality allows integrating, storing and analyzing ever more big databases from dispersed sources. The idea of open access to data is realized by the FRI mainly through publication of research results in domestic and foreign scientific journals, in specialized information services and on scientific portals. On the other hand, open access to raw data still raises a lot of concern and controversies in the scientific community, especially in the context of copyright infringement.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2017, 21, 4; 415-421
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-25 z 89

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies