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Shannon–Weaver index as an integrated indicator of metal differentiation in soil and plant samples

机译:Shannon-Weaver指数作为土壤和植物样本中金属分化的综合指标

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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 ( H ~(rel)= 1.0–0.9) to very high differentiation ( H ~(rel)= 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.
机译:摘要背景和受污染的土壤中金属分布的对比度(分化)是最重要的地球化学指标之一。 Shannon-Weaver指数(H)可以是土壤和植物样品中金属分布的合适标准。 描述了计算Shannon-Weaver索引的过程。 提出了一个渐变的五个渐变的指标比例(H〜(rel)= 1.0-0.9),提出了非常高的分化(H〜(rel)= 0.3-0.1)。 俄罗斯不同地区的背景土壤具有低甚至没有金属的分化。 具有重金属的土壤的空中污染显着增加了金属分化程度,特别是在污染源附近。 参数值随着距离污染源的距离增加而降低,可能是由于大土体积中的灰尘的机械稀释。

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