Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 4

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:  slope gradient
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
In a period from 2002 to 2005, a single-element field experiment was conducted at the Experimental Station in Mydlniki near Cracow. The field top soil was a brown loess-derived soil. The main objective of the experiment was to determine the effect of slope gradient on the plant cover index C of small bean crops. The impact of two slope gradients (9% and 16%) on the level of surface soil losses was studied, as was, in the experiment, the amount of surface soils exported from fallowed plots and from the plots grown with faba beans. The experiment on the impacted 22.13 × 1.87 m plots was four times repeated in each gradient zone. It was stated that the plant cover index C was 0.187 in the case of faba beans grown and cropped on the slopes showing a 16% gradient, and, it was 0.154 on the slopes with a 9% gradient. The impact of the total area of plant top ends expressed by an index called LAI (Leaf Area Index) on the value of index C is described by exponential functions, i.e. in the case of slope gradient being 16%: y = 0.6081e–0.6016x, and the slope gradient of 9%: y = 0.5447e–0.6341x.
Topsoil properties were studied in a ski slope at Petrovy kameny, Hruby Jesenik Mts. Effect of skiing was combined with a complex slope gradient, which comprised effects of vegetation type and soil horizons. Soil sorption complex and humification properties were expected to reflect both factors. Cation exchange capacity and to some degree saturation of adsorption complex were systematically lowered due to ski slope, and they were influenced also by vegetation type. C:N reflected vegetation type, but it reflected skiing only indirectly. The slope gradient significantly affected the soil sorption complex, yet contrary to our expectations. Several possible interpretations include species traits (litter decomposability, nutrient uptake) and patterns of topsoil horizon types, which can be associated to the history of the upper treeline.
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.