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Wyszukujesz frazę "water-air property" wg kryterium: Temat


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Tytuł:
Geomorphological conditions of water-air properties in the silt soils from the edge zone of the Carpathian Foothills
Autorzy:
Klimek, M
Zaleski, T.
Niemyska-Lukaszuk, J.
Powiązania:
https://bibliotekanauki.pl/articles/1401888.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
Carpathian foot-hills
retention
air property
geomorphology
soil
relief
water property
condition
porosity
silt soil
Opis:
In this paper an attempt to estimate the influence of the relief on the selected physical soil properties from the edge zone of the Carpathian Foothills has been presented.Differentiation of water-air properties related to the location on the slope was evaluated.It results from, both, the main soil forming process-lessivage, erosion and accumulative changes in the morphology of the soil profile.Soils lessives situated on tops and slopes less prone to erosion are characterised by deeper eluvial horizons - luvic with a higher total porosity and water retention in comparison to illuvial horizons - argillic. Eroded lessivé soils occur on the slopes prone to erosion with the argillic horizon outeropped to the surface which determins their properties in the whole soil profile, first of all, their porosity is low and they have a limited capacity for water retention. Gley soils occur in the valley bottoms and synclines of slopes. They arc characterised by higher total porosity and retention in the whole profile in comparison to the lessivé soils.
Źródło:
Acta Agrophysica; 2000, 35; 93-98
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An attempt to characterise soil macroporosity on the basis of structure standards
Autorzy:
Bryk, M
Domzal, H.
Pranagal, J.
Slowinska-Jurkiewicz, A.
Powiązania:
https://bibliotekanauki.pl/articles/1401857.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
soil macroporosity
rendzina soil
computer image analysis
structure standard
loess
soil porosity
water property
porosity
macroporosity
morphometric analysis
air property
soil preparation
black earth
Opis:
The aim of this work was to characterise macro porosity of soil preparations by means of image analysis. Preparations were made from the samples taken from 0-20 cm layer of four types of soil: typical soil lessive developed from loess, proper rendzina developed Irom cretaceous marl, chernozemic rendzina developed from chalk and mud-gley soil developed from clayey silt. The values of porosity by image analysis, Pk, (pores of the diameter greater than 200 (µm) were compared with the values of field air capacity, (Ppp, pores greater than 20 µm) and total porosity, determined by classical methods used in soil science. For most of the samples porosity obtained by computer image analysis, Pk, was lower than the values of field air capacity, Ppp„ as expected. For the rest of standards, the values obtained morphometrically, Pk, were higher than Ppp. It probably- resulted fram unequal pore sizes in the dried and moistened soil material and innate altributes of the method of soil water desorption. Statistical analyses revealed strong, statistically valid dependencies, with high values of the correlation coefficients (0.883 - 0.951) between porosity, Pk, total porosity, Po, and field air capacity, Ppp. Moreover, correlation indices calculated for Po and Ppp confirmed the already known relation.
Źródło:
Acta Agrophysica; 2000, 35; 23-30
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
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