L. Hably szerk.: Studia Botanica Hungarica 19. 1986 (Budapest, 1986)

Szakmány, György: Investigations on the trace element geochemical interaction between soil and vegetation: concentration of manganese, zinc, copper and lead in the soil and in Dactylis glomerata L

Table 3. Correlation coefficients of the trace elements soluble from the A, B, C soil levels and average soil section and that of the trace element accumulated in Dactylis glomerata correlation coefficient Mn average of the section A soil level B soil level C soil level -0.05 0.10 0.60 -0.25 average of the section A B C 0.36 0.96 -0.54 -0.03 Cu average of the section A B C -0.80 -0.80 -0.52 -0.61 Pb average of the section A B C 0.90 -0.02 0.94 0.82 thing is, that the trace elements taken up by plants can be related to the upper soil level (e.g. zinc), in other instances however, the quantity of trace elements accumulated in the plants are in strong correlation with the soluble trace element content of the lower soil levels (e.g. lead). Apart from these, there are elements like copper, where the quantity accumulated in the plants is in connection with the average of the soluble trace element content in the whole section. This connection can mean, as we have seen in case of copper, a negative correlation. These results draw the attention to the fact that in case of similar trace element studies it is not sufficient to sample only the top soil levels. .Most expedient is to investigate the complete soil section for a more accurate knowledge on the exact nature of the relations. REFERENCES DAVIS, D. & BECKET, P.H.T. (1978): The use of young plants to detect metal accumulations in soils. - Wat. Pollut. Control, pp. 193-210. HABLY, L. (1982): The relation between Pb-pollution along mainroads and the trace-elementcomposition in soil and vegetation (Examination of section rectangular to M 3 mainroad). StucUa bot. hung. 16; 5-40. JACKSON, K. S. & SKIPPEN, G.B. (1978): Geochemical dispersion of heavy metals via organic complexing: a laboratory study of copper, lead, zinc and nickel behaviour at a simulated sediment-water boundary. - Journ. Geochem. Exp. 10,: 117-138. REDOY, C.N. Si PATRICK, W.H.(1977): Effect of redox potential and pH on the uptake of cadmium and lead by rice plants. - Journ. Environmental Quality, £(3): 259-262. SZAKMÁNY, Gy. (in pressi: Geochemistry of soil interaction at Mezönngymihály, NE Hungary. Fragm. Mm. et Pal. 13. Author's address: Gy. SZAKMÁNY Eötvös Loránd University Department of Petrology and Geochemistry Budapest, Múzeum krt. 4/A. H-1088 HUNGARY 01