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Wyświetlanie 1-15 z 276
Tytuł:
Nitrogen fractions in dehydrated peat soils
Autorzy:
Becher, Marcin
Żukowski, Emil
Powiązania:
https://bibliotekanauki.pl/articles/1066276.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
muck
oles peat soil nitrogen
peat degradation
peat moss
sequential analysis
Opis:
The aim of the study was to determine the nitrogen speciation in organic soils under mulching, made from sedge and peat. For speciation tests, the method based on extraction with neutral reagent and two-stage acid hydrolysis allowing the separation of mineral nitrogen and organic forms: soluble, easily hydrolysable, hardly hydrolyzing and non-hydrolyzing. Characteristic for the degradation of dehydrated peats, the processes of oxygen transformation of organic matter increased the share of the most mobile soluble and easily hydrolysable fractions. The easily soluble and easily hydrolysable fraction was closely correlated with the decomposition processes of the organic matter of the studied soils. It was confirmed that a useful indicator describing the state of transformations of peat soils occurring after their dehydration, may be the ratio of the amount of nitrogen of the easily hydrolysable to the hardly hydrolysable form. The value of this ratio showed a significant linear relationship with soil characteristics characteristically variable in transformation processes of drained peat soils. It grew along with the advancement of decomposition processes of organic matter.
Źródło:
World Scientific News; 2019, 130; 149-162
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-destructive methods for peat layer assessment in oligotrophic peat bogs: A case study from Poiana Stampei, Romania
Autorzy:
Gheorghe, I F
Valcu, C.-M.
Barbu, I.
Topa, S.
Powiązania:
https://bibliotekanauki.pl/articles/58079.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
peat deposit
peat layer
oligotrophic peat bog
Poiana Stampei peat bog
peat bog
Sphagnum fimbriatum
similarity
plant community
classification system
Romania
Opis:
Practices currently employed in the investigation and characterisation of peat deposits are destructive and may irremediable perturb peat bog development even in cases when exploitation is not carried out. We investigated the correlation between vegetation characteristics in the active area of Poiana Ştampei peat bog, Romania, and the underlying peat layer depth, aiming at establishing a non-destructive method of peat layer depth estimation. The presence of the Sphagneto-Eriophoretum vaginati association, dominated by Sphagnum fimbriatum, Eriophorum vaginatum, Andromeda polifolia, Vaccinium oxycoccos, V. myrtillus, V. vitis-idaea, Polytrichum commune, Picea excelsa, Pinus sylvestris and Betula verrucosa was found to predict the existence of the peat layer but not its depth. Out of the seven identified vegetation types, one type was associated with a very thin or no peat layer, one type was characterised by the presence of a thick (over 100 cm) peat layer and five types indicated the presence of variable average depths of the peat layer. pH values correlated with peat layer depth only within the vegetation type associated with thick peat layers.
Źródło:
Acta Societatis Botanicorum Poloniae; 2006, 75, 2; 157-163
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Water retention characteristics of peat and sand mixtures
Autorzy:
Walczak, R.
Rovdan, E.
Witkowska-Walczak, B.
Powiązania:
https://bibliotekanauki.pl/articles/24458.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
total porosity
peat soil
organic matter content
bulk density
sand
soil
hydrophysical property
peat-sand mixture
peat
water retention
Źródło:
International Agrophysics; 2002, 16, 2
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heavy metal accumulation in two peat bogs from southern Poland
Autorzy:
Fiałkiewicz-Kozieł, Barbara
Smieja-Król, Beata
Palowski, Bernard
Powiązania:
https://bibliotekanauki.pl/articles/2026703.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
heavy metals
variability
ombrotrophic peat bog
Opis:
The dy namic changes in se lected heavy metal con cen tra tions were an a lyzed in two ombrotrophic peat bogs from south ern Po land: Puoecizna Ma³a (PK) and Puoecizna Krauszowska (PM). The high est con tents of Pb and Zn oc cur at the top of pro files ex am ined: 115.36 mg/kg (PM1), 90.61 mg/kg (PM2), 182.40 mg/kg (PK1), 121.68 mg/kg (PK2) and 127.43 mg/kg (PM1), 89.73 mg/kg (PM2), 170 mg/kg (PK1), 130.4 mg/kg (PK2), re spec tively. Con cen tra tions of cop - per are sim i lar to those of lo cal soils vary ing from 9.4 to 12.8 mg/kg. Cad mium strongly var ies with depth, which in di - cates dis tinct mo bil ity of this el e ment. Two peaks of el e vated Fe con cen tra tions are ob served at the top and bot tom of the Puoecizna Ma³a pro file, while the max i mum in Puoecizna Krauszowska was at the top of the peat bog. The Ti con tent dis tinctly var ies with depth and cor re lates with the ash con tent (R2 = 0.91–0.99). The stron gest and pos i tive cor re la tion is ob served be tween Zn-Pb and Ti-Pb con tents. The sig nif i cant dif fer ences of metal con cen tra tions are noted be tween the pro files, which is prob a bly con nected with a rate of peat ac cu mu la tion and plant com po si tion of the pro files in ves - ti gated, as well as with their dis tur bance by hu man ac tiv ity.
Źródło:
Studia Quaternaria; 2011, 28; 17-24
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Peat soils in the Bellsund region, Spitsbergen
Autorzy:
Klimowicz, Zbigniew
Melke, Jerzy
Uziak, Stanisław
Powiązania:
https://bibliotekanauki.pl/articles/2052490.pdf
Data publikacji:
1997
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Spitsbergen
peat soils
chemical properties
Źródło:
Polish Polar Research; 1997, 18, 1; 25-39
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tertiary compression of Polish peat
Trzeciorzędowa ściśliwość polskich torfów
Autorzy:
Malinowska, E.E.
Powiązania:
https://bibliotekanauki.pl/articles/887225.pdf
Data publikacji:
2016
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
tertiary compression
Polska
peat
creep model
Źródło:
Scientific Review Engineering and Environmental Sciences; 2016, 25, 4[74]
1732-9353
Pojawia się w:
Scientific Review Engineering and Environmental Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ stosowania krzemianu potasu na wzrost, plonowanie i zdrowotność roślin pomidora ‘Growdena F1’ uprawianego na uprzednio użytkowanym substracie
The influence of application of potassium silicate on growth, fruit yield, and healthiness of ‘Growdena F1’ tomato plants grown in reused peat substrate
Autorzy:
Borkowski, J.
Murgrabia, A.
Dyki, B.
Kowalczyk, W.
Felczyńska, A.
Powiązania:
https://bibliotekanauki.pl/articles/2119571.pdf
Data publikacji:
2019
Wydawca:
Instytut Ogrodnictwa
Tematy:
tomato
reused peat substrate
silicon response
Opis:
The aim of the study was to examine reproductive and vegetative responses of ‘Growdena F1’ tomatoes (Solanum lycopersicum L.) to use of potassium silicate fertilizer (as Silvit 15.0% SiO3) into reused peat substrate. Investigations were carried out at a greenhouse in 2013 and 2014. Tomatoes were treated with potassium silicate 2 times: immediately after tomato planting and a month later, at a rate of 0.11 g silicon (Si) per plant per year. Potassium silicate was applied as 1% water solution during plant irrigation. In each term, 200 ml Silvit of Si-containing solution per plant was applied. Plants unsupplied with potassium silicate serves as the control. The results showed that application of potassium silicate was able to improve tomato root healthiness, but only in the second year of the study, when the presence of pathogens in the tested substrate was high. The increases in marketable and total fruit yields as a result of use of potassium silicate was found only in 2014. It is concluded that at high multiplication of root pathogens in the substrate, the application of Sicontaining fertilizers do not protect sufficiently roots against infection.
Źródło:
Zeszyty Naukowe Instytutu Ogrodnictwa; 2019, 27; 73-78
2300-5882
2391-8969
Pojawia się w:
Zeszyty Naukowe Instytutu Ogrodnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Holocene environmental history of the Bottomless Lake (Tăul fără fund) sphagnum peat bog in Bǎgǎu, Romania
Autorzy:
Vári, Tamás Zsolt
Molnár, Dávid
Sümegi, Pál
Sümegi, Balázs Pál
Törőcsik, Tünde
Szakál, Edit
Benyó-Korcsmáros, Réka
Powiązania:
https://bibliotekanauki.pl/articles/2024704.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Romania
Holocene
peat bog
environmental history
Opis:
This work focuses on the paleoenvironmental and palaeoclimatological history of the undisturbed core sequence of 8.6 m extracted from the Bottomless Lake (Tăul fără fund) sphagnum peat bog located in Bǎgǎu, Romania, which covers the last 8,600 years based on radiocarbon dating. By comparing results of archaeological and palaeoenvironmental investigations carried out so far in the area, results of the loss on ignition analyses and the data of the chronological analyses, it was possible to reconstruct climatic factors and anthropogenic impacts on the local environment. The undisturbed core sequence has above 86% organic matter content all along excluding the erosion horizons. Anthropogenic effects (building, woodcutting, pasturage, husbandry, farming) and changes in the local climate, vegetation, and environment increased the rate of the erosion and decreased the rate of the accumulation.
Źródło:
Studia Quaternaria; 2020, 37; 69-77
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Statistical analysis of radiocarbon dates as a tool for reconstruction of the environmental changes
Autorzy:
Michczyńska, D. J.
Michczyński, A.
Pazdur, A.
Rotnicki, K.
Powiązania:
https://bibliotekanauki.pl/articles/1187375.pdf
Data publikacji:
2004
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
radiocarbon
peat
statistical analysis
environmental change
Opis:
Statistical analysis of large sets of 14C dates may be a source of information on global or regional environmental changes. Since the nineteen seventies, an analysis of the frequency distribution on a time scale of 14C-dated samples has been carried out for several selected geographic regions. This paper presents basics of the applied method and examples of cumulative probability density functions constructed for 14C dates of peat from territory of Poland. It is emphasised that preferential sampling plays an important role in such a type of analysis. The problem of absolute age determination has been discussed, too.
Źródło:
Polish Geological Institute Special Papers; 2004, 11; 109-112
1507-9791
Pojawia się w:
Polish Geological Institute Special Papers
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Classification of organic soils for engineering geology
Autorzy:
Myślińska, E.
Powiązania:
https://bibliotekanauki.pl/articles/2059633.pdf
Data publikacji:
2003
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
organic soils
peat
gyttja
organic matter
Opis:
This paper reviews the classifications of organic soils as applied in different countries, with particular attention drawn to those based on international and European norms. These norms propose the distinction of four groups of organic soils: peats (fibrous, pseudo-fibrous, and amorphous), gyttja and humic soils, which may be further divided into sub-groups. Organic soils are included within poor soils, because of their considerable susceptibility in relation to water, which causes their high compressibility, low strength and high shrinkage. Existing regional and international norms and plans appear not to characterise these soils sufficiently. The classification proposed in this paper will allow determination of the relationships between particular engineering geological parameters, which, to a large degree, will help planning of such objects as embankments or melioration structures. This is, however, possible only within particular genetic types. Organic soils developed in different conditions differ not only in organic matter content, but also in their chemical and physico-chemical character (i.e. degree of carbonisation, relation of humic acids to fulvic acids, bitumen content, degree of coagulation and decomposition of organicmatter). The evaluation of organic soils requires firstly the determination of their origin, and then each genetic group should be subdivided based on the content of organic matter. The relationships between the physical, physico-chemical and mechanical properties should be then determined within these groups.
Źródło:
Geological Quarterly; 2003, 47, 1; 39-42
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Technologia przygotowania torfu do otoczkowania nasion
A peat preparation technology for seed enveloping
Autorzy:
Domoradzki, M.
Korpal, W.
Weiner, W.
Powiązania:
https://bibliotekanauki.pl/articles/287874.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
otoczkowanie nasion
torf
seed
coating
peat
Opis:
W pracy przedstawiono sposób przygotowania komponentu torfowego do otoczkowania nasion. Przedstawiono zestaw urządzeń do realizacji procesu suszenia i separacji torfu.
The paper presents a preparation method of peat component for seed enveloping. A set of equipment for peat drying and separation process was presented.
Źródło:
Inżynieria Rolnicza; 2007, R. 11, nr 5 (93), 5 (93); 107-114
1429-7264
Pojawia się w:
Inżynieria Rolnicza
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of peatlands of Szczecin’s surroundings in terms of suitability for development
Analiza torfowisk okolic Szczecina pod względem przydatności pod zabudowę
Autorzy:
Kopczyńska, O.
Powiązania:
https://bibliotekanauki.pl/articles/369809.pdf
Data publikacji:
2017
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
peat
peatland
development
torf
torfowisko
zabudowa
Opis:
The article shows the problem of peatlands as areas investors increasingly turn to look for areas for development. Until recently peatlands were treated primarily as peat deposits, used in various fields of the economy. At present, economic expansion has caused peatlands could be considered for development. There has been proposed the classifiaction of peatlands in terms of its development suitability.
Artykuł ukazuje problematykę torfowisk jako terenów, ku którym coraz częściej zwracają się inwestorzy w poszukiwaniu obszarów pod zabudowę. Do niedawna torfowiska były traktowane przede wszystkim jako złoża torfu, wykorzystywanego w różnych dziedzinach gospodarki. Obecnie ekspansja gospodarcza spowodowała, że stały się terenami, które mogłyby zostać wykorzystane pod zabudowę. W artykule zaproponowano podział torfowisk ze względu na przydatność pod zabudowę i zagospodarowanie.
Źródło:
Przestrzeń i Forma; 2017, 32; 141-152
1895-3247
2391-7725
Pojawia się w:
Przestrzeń i Forma
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Obecność substancji humusopodobnych w roślinności torfotwórczej
The presence of humic-like substances in peat forming plants
Autorzy:
Bejger, R.
Gołębiowska, D.
Nicia, P.
Powiązania:
https://bibliotekanauki.pl/articles/339615.pdf
Data publikacji:
2011
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
długożyciowa fotoindukowana luminescencja
torf niski
torf wysoki
high-moor peat
long-term photoinduced luminescence
low-moor peat
Opis:
W badaniach wykorzystano metodę długożyciowej fotoindukowanej luminescencji (DFL) w celu wykazania podobieństwa między alkalicznymi roztworami substancji humusowych (SH) wyekstrahowanych z próbek torfu niskiego (turzycowego) i wysokiego (sfagnowego) a wyciągami "substancji humusopodobnych", uzyskanych z próbek gatunków roślin z rodzajów Carex i Sphagnum. Wyciągi zarówno z torfu, jak i roślin torfotwórczych wykazują zjawisko długożyciowej fotoindukowanej luminescencji w zakresie widzialnym.
The aim of the study was to use the long-term photoinduced luminescence method to show similarity between alkaline extracts from low-moor and high-moor peat samples and alkaline extracts from peat forming plants: Carex and Sphagnum. All studied peat and peat-forming plant extracts showed the phenomenon of long-term photoinduced luminescence in the visible range of wavelengths.
Źródło:
Woda-Środowisko-Obszary Wiejskie; 2011, 11, 1; 21-29
1642-8145
Pojawia się w:
Woda-Środowisko-Obszary Wiejskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatial variability of selected physicochemical parameters within peat deposits in small valley mire: a geostatistical approach
Autorzy:
Pawłowski, D.
Okupny, D.
Włodarski, W.
Zieliński, T.
Powiązania:
https://bibliotekanauki.pl/articles/94486.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
peat
geostatistics
organic matter
pH
spatial analysis
Opis:
Geostatistical methods for 2D and 3D modelling spatial variability of selected physicochemical properties of biogenic sediments were applied to a small valley mire in order to identify the processes that lead to the formation of various types of peat. A sequential Gaussian simulation was performed to reproduce the statistical distribution of the input data (pH and organic matter) and their semivariances, as well as to honouring of data values, yielding more ‘realistic’ models that show microscale spatial variability, despite the fact that the input sample cores were sparsely distributed in the X–Y space of the study area. The stratigraphy of peat deposits in the Ldzań mire shows a record of long-term evolution of water conditions, which is associated with the variability in water supply over time. Ldzań is a fen (a rheotrophic mire) with a through-flow of groundwater. Additionally, the vicinity of the Grabia River is marked by seasonal inundations of the southwest part of the mire and increased participation of mineral matter in the peat. In turn, the upper peat layers of some of the central part of Ldzań mire are rather spongy, and these peat-forming phytocoenoses probably formed during permanent waterlogging.
Źródło:
Geologos; 2014, 20, 4; 269-288
1426-8981
2080-6574
Pojawia się w:
Geologos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of the Kinetics of the Drying Process of Composite Pellets on a Convective Drying Stand
Autorzy:
Petrova, Zhanna
Sniezhkin, Yurii
Paziuk, Vadym
Novikova, Yuliia
Petrov, Anton
Powiązania:
https://bibliotekanauki.pl/articles/1838289.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
obsolete sludge
peat
biomass
granulation
drying
pellet
Opis:
In Ukraine, the problem of processing and utilization of sludge deposits that are formed during the treatment process at wastewater treatment plants is relevant. Unprocessed sewage sludge merges into overcrowded sludge sites every year, which leads to a deterioration of the environment and living conditions in Ukraine. Therefore, the aim of the work was to study the processing of sludge, the creation of pellets based on their composition with peat and biomass and their drying. The article presents the studies of drying kinetics of composite pellets based on peat, obsolete sludge and biomass on an experimental convective drying stand. The influence of the proportions of the components of the composition on the drying time was determined and the ratio at which the drying time of the pellets is shorter and the pellets are of better quality was selected. A comparison of the drying time of the sludgepeat composition and its components was performed, which shows that during the drying of the composite pellets, the intensification of the drying process is observed. The study related to the effect of the diameter of the pellets on the duration of drying showed that the duration of drying increases along with diameter. The presented comparison of drying kinetics of twoand three-component pellets shows the same nature of the drying curves and the drying time is in the range of 17-18 minutes. The optimal ratio of components for quality granulation was selected. The effective drying regimes of composite pellets based on silt deposits, peat and biomass were determined.
Źródło:
Journal of Ecological Engineering; 2021, 22, 6; 159-166
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 276

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