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Changes of the concentrations of dissolved chemical compounds migrating into ground water through biogeochemical barriers in an agricultural landscapeDOI: 10.2478/v10009-009-0048-y Keywords: ground and surface water, nitrogen and phosphorus forms Abstract: Forms of nitrogen (N-NO3-, N-NH4+, N-org) and phosphorus (P-PO4-3, P-org) were investigated in ground and surface water as well as in precipitation and run-off. The highest concentration of all the investigated compounds was determined in the drain and in run-off. This investigation shows that afforestations and small ponds function as very efficient biogeochemical barriers with regard to N-NO3- and P-PO4-3. They do not, however, limit the spread of P-org.
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