Abstract
The degree of contrast (differentiation) in the distribution of metals in background and contaminated soils is one of the most important geochemical indicators. The Shannon–Weaver index (H) can be a suitable criterion for the distribution of metals in soil and plant samples. A procedure for calculating the Shannon–Weaver index is described. An index scale of five gradations, from no differentiation (Hrel = 1.0–0.9) to very high differentiation (Hrel = 0.3–0.1), is proposed. The background soils in different regions of Russia have low or even no differentiation of metals. Aerial pollution of soils with heavy metals appreciably increases the degree of metal differentiation, especially near the source of pollution. The parameter value decreases with increasing distance from the pollution source, probably due to the mechanical dilution of dust in the large soil volume.
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Original Russian Text © Yu.N. Vodyanitskii, 2017, published in Vestnik Moskovskogo Universiteta, Seriya 17: Pochvovedenie, 2017, No. 4, pp. 35–39.
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Vodyanitskii, Y.N. Shannon–Weaver index as an integrated indicator of metal differentiation in soil and plant samples. Moscow Univ. Soil Sci. Bull. 72, 175–179 (2017). https://doi.org/10.3103/S0147687417040081
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DOI: https://doi.org/10.3103/S0147687417040081