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Tytuł:
Water conductivity of Arctic zone soils (Spitsbergen)
Autorzy:
Witkowska-Walczak, B.
Slawinski, C.
Bartminski, P.
Melke, J.
Cymerman, J.
Powiązania:
https://bibliotekanauki.pl/articles/25209.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
water conductivity
soil
grain size
distribution
pore size
Arctic zone
Spitsbergen
Opis:
The water conductivity of arctic zone soils derived in different micro-relief forms was determined. The greatest water conductivity at the 0-5 cm depth for the higher values of water potentials (> -7 kJ m-3) was shown by tundra polygons (Brunic-Turbic Cryosol, Arenic) – 904-0.09 cm day-1, whereas the lowest were exhibited by Turbic Cryosols – 95-0.05 cm day-1. Between -16 and -100 kJ m-3, the water conductivity for tundra polygons rapidly decreased to 0.0001 cm day-1, whereas their decrease for the other forms was much lower and in consequence the values were 0.007, 0.04, and 0.01 cm day-1 for the mud boils (Turbic Cryosol (Siltic, Skeletic)), cell forms (Turbic Cryosol (Siltic, Skeletic)), and sorted circles (Turbic Cryosol (Skeletic)), respectively. In the 10-15 cm layer, the shape of water conducti-vity curves for the higher values of water potentials is nearly the same as for the upper layer. Similarly, the water conductivity is the highest – 0.2 cm day-1 for tundra polygons. For the lower water potentials, the differences in water conductivity increase to the decrease of soil water potential. At the lowest potential the water conductivity is the highest for sorted circles – 0.02 cm day-1 and the lowest in tundra polygons – 0.00002 cm day-1.
Źródło:
International Agrophysics; 2014, 28, 4
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Database of Polish arable mineral soils: a review
Autorzy:
Bieganowski, A.
Witkowska-Walczak, B.
Glinski, J.
Sokolowska, Z.
Slawinski, C.
Brzezinska, M.
Wlodarczyk, T.
Powiązania:
https://bibliotekanauki.pl/articles/26522.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Opis:
The database of Polish arable mineral soils is presented. The database includes a lot of information about the basic properties of soils and their dynamic characteristics. It was elaborated for about 1 000 representative profiles of soils in Poland The database concerns: particle size distribution, organic carbon content, acidity-pH, specific surface area, hydrophobicity – solidliquid contact angle, static and dynamic hydrophysical properties, oxidation-reduction properties and selected biological (microbiological) properties of soils. Knowledge about soil characteristics is indispensable for description, interpretation and prediction of the course of physical, chemical and biological processes, and modelling these processes requires representative data. The utility of simulation and prediction models describing phenomena which take place in the soil-plant-atmosphere system greatly depends on the precision of data concerning characteristics of soil. On the basis of this database, maps of chosen soil properties are constructed. The aim of maps is to provide specialists in agriculture, ecology, and environment protection with an opportunity to gain knowledge of soil properties and their spatial and seasonal variability.
Źródło:
International Agrophysics; 2013, 27, 3
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Water retention of arctic zone soils (Spitsbergen)
Autorzy:
Melke, J.
Witkowska-Walczak, B.
Bartminski, P.
Powiązania:
https://bibliotekanauki.pl/articles/25844.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Opis:
The water retention characteristics of the arctic zone soils ((TurbicCryosol (Skeletic), TurbicCryosols (Siltic, Skeletic) and BrunicTurbicCryosol (Arenic)) derived in different micro-relief forms were determined. Water retention curves were similar in their course for the mud boils, cell forms, and sorted circles ie for TurbicCryosols. For these forms, the mud boils showed the highest water retention ability, whereas the sorted circles – the lowest one. Water retention curves for the tundra polygonsv (Brunic TurbicCryosol, Arenic) were substantially different from these mentioned above. The tundra polygons were characterized by the lowest bulk density of 1.26 g cm-3, whereas the sorted circles (TurbicCryosol, Skeletic) – the highest: 1.88 g cm-3. Total porosity was the highest for the tundra polygons (52.4 and 55.5%) and the lowest – for the sorted circles (28.8 and 26.2%). Pore size distribution of the investigated soils showed that independently of depths, the highest content of large and medium pores was noticed for the tundra polygons ie 21.2-24.2 and 19.9-18.7%, respectively. The lowest content of large pores was observed for the cell forms (6.4-5.9%) whereas the mud boils exhibited the lowest amount of medium sized pores (12.2-10.4%) (both TurbicCryosols Siltic, Skeletic). The highest content of small pores was detected in the mud boils – 20.4 and 19.0%.
Źródło:
International Agrophysics; 2013, 27, 4
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Soil profile as a natural membrane for heavy metals from wastewater
Autorzy:
Wlodarczyk, T.
Witkowska-Walczak, B.
Majewska, U.
Powiązania:
https://bibliotekanauki.pl/articles/24215.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
soil profile
natural membrane
heavy metal
waste water
zinc
cadmium
irrigation
soil solution
zinc concentration
cadmium concentration
industrial waste water
toxicity
Opis:
The effect of intensive irrigation with wastewater on the zinc (Zn) and cadmium (Cd) concentration in soil solution was investigated. The experiment was parallel conducted on two soil profiles. The soil microcosms were watered with purified wastewater and purified wastewater with an the addition of zinc and cadmium. The results indicate clearly that neither intensive overhead irrigation of the soil nor its flooding with these wastewater and exceeded sorptive capacity. The application of treated wastewater and wastewater with heavy metals addition did not appear to pose a threat to the natural environment. In all the cases under analysis, zinc and cadmium concentrations in the soil solution were several-fold lower than the permissible levels.
Źródło:
International Agrophysics; 2012, 26, 1
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hysteresis between wetting and drying processes as affected by soil aggregate size
Autorzy:
Witkowska-Walczak, B.
Powiązania:
https://bibliotekanauki.pl/articles/25257.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
soil aggregation
hysteresis
soil
water retention curve
water retention
drying process
wetting process
Źródło:
International Agrophysics; 2006, 20, 4
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Porosity and water useful for plants in Luvisols created from sandy silt and silt
Autorzy:
Witkowska-Walczak, B.
Turski, M.
Powiązania:
https://bibliotekanauki.pl/articles/25087.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
silt
sandy-silt
pore size
soil
development
crop yield
plant growth
porosity
water regime
distribution
water balance
Źródło:
International Agrophysics; 2004, 18, 2
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrophysical characteristics and evaporation of Haplic Luvisol and Mollic Gleysol aggregates
Autorzy:
Witkowska-Walczak, B.
Powiązania:
https://bibliotekanauki.pl/articles/24599.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
soil aggregation
evaporation
water conductivity
water
aggregate size
soil aggregate
water capacity
Źródło:
International Agrophysics; 2003, 17, 3
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pore size distribution and amount of water available for plants in arable soils of Poland
Autorzy:
Witkowska-Walczak, B.
Walczak, R.
Ostrowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/24057.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
Polska
pore size
soil
porosity
water availability
distribution
arable soil
plant
Źródło:
International Agrophysics; 2003, 17, 4
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Use of simplex algorythm for determination of soil aggregation extreme changes
Autorzy:
Niewczas, J.
Witkowska-Walczak, B.
Powiązania:
https://bibliotekanauki.pl/articles/25659.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
soil aggregation
simplex algorithm
soil aggregate
stability index
extreme change
Źródło:
International Agrophysics; 2003, 17, 4
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changes in the hydrophysical properties of peat soils under anthropogenic evolution
Autorzy:
Rovdan, E.
Witkowska-Walczak, B.
Walczak, R.
Slawinski, C.
Powiązania:
https://bibliotekanauki.pl/articles/24801.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
hydraulic conductivity
peat soil
hydrophysical property
anthropogenic evolution
water retention
Źródło:
International Agrophysics; 2002, 16, 3
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 39

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