Acta Botanica Croatica, Vol. 59 No. 1, 2000.
Original scientific paper
Chemical composition of the plants of loess steppes in Hungary
Margit Kovács
; Institute of Environmental Management of the Agricultural University in Gödöllö, Hungary
Gábor Turcsányi
; Institute of Environmental Management of the Agricultural University in Gödöllö, Hungary
Attila Engloner
; Department of Botany and Plant Physiology of the Agricultural University in Gödöllö, Hungary
Abstract
The first two stages of the successional series on loess (Agropyro-Kocliietum, Salvio-Festucetum rupicolae) differ from each other in their Holistic composition, the total element content of their soils and plant species as well as their water demand. Chrysopogon gryllus, a characteristic species of the loess steppe, belongs to the calciotroph physiotype according to the Ca/K ratio in its leaves. The leaves of this species contain relatively high concentrations of Ca and Mg and a low concentration of N. The high C/N ratio in the leaves and roots of Chrysopogon gryllus should indicate that the mineralization dynamics is slowed down in the stands dominated by this species. Barbula cordata, a moss species of the Salvio-Festucetum rupicolae community, accumulates very high amounts of heavy metals from its surroundings. In the Agropyro-Kochietum community, Bromus species accumulated the highest amounts of heavy metals in their leaves.
Keywords
semidesert; loess; steppe; grassland; plant community; chemical pomposition; Chrysopogon gryllus; Hungary
Hrčak ID:
160638
URI
Publication date:
31.12.2000.
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