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首页> 外文期刊>American journal of applied sciences >Specific Features of the Accumulation and Distribution of Heavy Metals in Soils of the Floodplain and Deltaic Landscapes of the Don River | Science Publications
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Specific Features of the Accumulation and Distribution of Heavy Metals in Soils of the Floodplain and Deltaic Landscapes of the Don River | Science Publications

机译：洪泛平原土壤和顿河三角洲景观中重金属的累积和分布特征科学出版物

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> >The purpose of this work was to study specific features ofthe accumulation and distribution of the total content and mobile forms ofHeavy Metals (HM) in soils of the estuarine ecosystems of the floodplain anddeltaic landscapes of the Don River. The results allowed us to detect regionalspecific features in the formation of HM compounds in floodplain soils of theDon River estuarine region and the changes that occur with soil pollution andto detect the influence of different factors on the transformation of metalcompounds in the soils and estimate them ecologically. It was shown that thedistribution of total HM content in the investigated soils is determinedprimarily by their content in pedogenic species of the Don river floodplain, aswell as by soil factors: The organic matter content and particle-sizefractions. The system of chemical element compounds forms a relationship ofdifferent compound groups, with strongly bound metal forms predominating. Thesoils can be ordered by their ability to strongly retain Cd, Pb, Mn, Zn, Cu,Ni: Alluvial-meadow heavy-loam alluvial meadow light-loam meadowalluvial-deposited alluvial-meadow sandy and sandy-loam alluvial-stratified sandy. This series completely corresponds to the decreasein their HM buffering capacity. Regional characteristics of HM behavior inLower Don floodplain and delta soils include the weakly bound compounds Cd, Pb,Mn, Cu, Ni, which are represented mainly by specifically absorbed forms oncarbonates and Fe-Mn (hydr) oxides.
机译： > >这项工作的目的是研究洪泛区河口生态系统和唐河三角洲景观中土壤中重金属（HM）的总含量和流动形式的积累和分布的特定特征河。结果使我们能够检测顿河河口地区洪泛区土壤中HM化合物的形成的区域特征以及土壤污染引起的变化，并检测不同因素对土壤中金属化合物转化的影响并对其进行生态评估。结果表明，被调查土壤中总HM含量的分布主要取决于它们在Don河漫滩的成岩物种中的含量以及土壤因素：有机质含量和粒径分数。化学元素化合物的体系形成不同化合物基团的关系，其中牢固结合的金属形式占主导地位。可以根据土壤保持Cd，Pb，Mn，Zn，Cu，Ni的能力排序：冲积草甸重壤土>冲积草甸轻壤土>草甸冲积沉积物>冲积草甸沙质和砂壤土>冲积土壤分层的沙质。该系列完全对应于它们的HM缓冲能力的降低。下唐洪平原和三角洲土壤中HM行为的区域特征包括弱结合的化合物Cd，Pb，Mn，Cu，Ni，它们主要由碳酸盐和Fe-Mn（水）氧化物的特异性吸收形式表示。

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