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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:
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 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
Wyświetlanie 1-15 z 49

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