engleski

Geochemistry of Vrbnicko Polje (Croatia) Vinegrowing Site

A multi-element pedo-geochemical survey was carried out in Vrbničko polje vineyards on the Krk Island, Croatia. This Mediterranean vinegrowing site is famous by Žlahtina wine production. The objectives of this study are (i) to describe the climatic conditions of the area, (ii) to describe the spatial distribution of chemical elements in soil and (iii) to identify the main anthropogenic inputs affecting trace metal contents. Two soil profiles were excavated and examined, and dominant soil type was determined, as well as physical and chemical characteristics of soil. Topsoil (0-30 cm) and subsoil (30-60 cm) samples were collected from 26 location inside the site. Total metal contents (Al, Ca, Cd, Co, Cr, Cu, Fe, Mg, Mn, Mo, Ni, P, Pb, S, V, Zn) were determined using ICP-OES after aqua regia extraction. A geospatial database was compiled in GIS, and after applying statistics and geostatistisc, the maps of trace metals distribution have been produced. Accumulation of copper in soil, determined in this research, is the most common effect of continuing protection against diseases and pests in vineyards. High nickel and chromium concentrations seem to be of the geogenic origin. Associations of heavy metals with the selected soil properties explain the preferential feature of metal retention in soil.

anthropogenic vineyard soil; geochemical characterization; GIS; trace metals; parent material; spatial distribution

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