Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 3

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  soil change
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Changes of topographic profile in dried valley bottom

100%
Grzywna A., Palys S.
Acta Agrophysica
|
2000
|
tom 35
In the present paper, on the basis of altitude measurements, changes of topographic profiles of a chosen dried valley in Elizowkaon the arable land were presented. Intensity of water erosion was also studied on the unprotected loess terrain for 40 years.On the average, 22 cm of mud deposited on the tested section of the valley bottom (total area of 1.28 ha) along 500 m of the water race line, with the average width of 25.ʹ6 m. In consequence, the local erosion basis was raised and the average inclination decreased slightly. Physico-chemical properties did not significantly change within 40 years and these factors are typical of deluvial soils with unshaped profile. Their partial improvement points to reduction and stabilisation of erosion processes. That phenomenon is associated with slight thaw water run-off and the lack of larger storm precipitation.
2

Investigations of stress state in soil under tractor tyres

84%
Pytka J., Szymaniak G.
Teka Komisji Motoryzacji i Energetyki Rolnictwa
|
2004
|
tom 04
3

Studies on stability and changes in microbiological and biochemical activity of podzolic soil under plantation of basket willow after introduction of sewage sludge

67%
Joniec J., Furczak J.
Polish Journal of Environmental Studies
|
2010
|
tom 19
|
nr 5
Our study was conducted on a podzolic soil from a field experiment in which, 9 years earlier, municipal- industrial sewage sludge was introduced at doses of 30, 75, 150, 300, and 600 Mg·ha-1. Following the application of the sludge, the soil was planted with basket willow (Salix viminalis L.). Soil samples for the analyses were taken twice (at the beginning and at the end of the vegetation season of the 9th year) from depths of 0-20 cm and 20-40 cm. The soil material was used for determinations of the total numbers of bacteria with low and high nutrition requirements, the numbers of filamentous fungi, proteolytic bacteria and fungi, respiratory activity, rate of cellulose mineralization, rate of ammonification and nitrification, and of dehydrogenase and protease activity. The results obtained demonstrated that in the 9th year from the application of the sludge there was continued effect of its application on most of the microbiological properties (exception – proteolytic bacteria) and on all of the biochemical parameters. There was notable stimulation of the growth of cellulolytic bacteria and of the fungal groups under analysis. Increased activity was also displayed by almost all biochemical parameters, with the exception of ammonification (in both layers of the soil) and nitrification (in the deeper horizon of the soil), in which case significant inhibition was observed.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.