Pregledni rad
https://doi.org/10.33128/ag.80.5.4
SENSITIVITY OF SOIL TO LEACHING OF POLLUTANTS AND VULNERABILITY OF GROUND WATER TO POLLUTION IN THE LOWLAND OF MEĐIMURJE COUNTY
Željko Vidaček
orcid.org/0000-0002-6315-8513
; Zagreb, Hrvatska
Sažetak
This work on soil sensitivity to leaching of pollutants and groundwater vulnerability to pollution is a part of a five-year research on the lowland area of Međimurje County by Vidaček at all 2008. In the lower part of Međimurje most of the land is arable. From the agroecological point of view, these are areas of potentially high degree of pollution by agrochemicals. Aquifers are covered by automorphic and hydromorphic soils of different texture and water permeability. The aquifer horizon consists of well-grained gravel with different percentage of sand. Of the total area of gross 42,893.5 hectares, we have the following soil sensitivity classes to potentially contaminate groundwater: soil of II. classes of weak sensitivity 1,496.5 ha, soil of III. moderate sensitivity classes, 6.157,6 ha and soil of IV. high sensitivity class, 20,311.9 hectares. See a map at the end of the text. The shallowest open water horizon in the lowland area of the county is highly vulnerable to pollution from the surface of the soil. Annual measured quantities of leached water from lysimeter in the five year period vary from 75.8 to 281.5 mm. Quantities of leached mineral nitrogen are the highest in apple plantation 13.5 to 47.7 kg N / ha. When cultivating field crops, predominantly corn, these values vary in a very wide range of 7.2 kg N / ha to 30.5 kg N / ha.
Ključne riječi
soil; groundwater; pollution; mineral nitrogen; lysimeters
Hrčak ID:
220094
URI
Datum izdavanja:
2.5.2019.
Posjeta: 1.339 *