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Analiz tyazhelykh metallov donnykh otlozheniy malykh rek, podverzhennykh vliyaniyu sel'skokhozyaystvennoy melioratsii, na territorii Sredneamurskoy nizmennosti [Analysis of heavy metal in bottom deposits of small rivers affected by agricultural reclamation on Sredneamurskaya lowland, Russian Far East]
|Alternate Title:||Analysis of heavy metal in bottom deposits of small rivers affected by agricultural reclamation on Sredneamurskaya lowland, Russian Far East|
|Authors:||Zubarev, V. A.|
|Author Affiliations:||Primary: |
Rossiyskaya Akademiya Nauk, Dal'nevostochnoye Otdeleniye, Institut Kompleksnogo Analiza Regional'nykh Problem, Birobidzhan, Russian Federation
|Volume Title:||Izvestiya Tomskogo Politekhnicheskogo Universiteta|
|Source:||Izvestiya Tomskogo Politekhnicheskogo Universiteta, 324(1), p.203-208. Publisher: TPU, Tomsk, Russian Federation. ISSN: 1684-8519|
|Note:||In Russian with English summary. 12 refs.; illus., incl. 3 tables, sketch map|
|Summary:||The relevance of this work is caused by the need to assess the ecological status of watercourses by the change of heavy metals in sediments of small rivers which can serve as an indicator of the ecological state of floodplain-channel complexes and the integral indicator of water surface pollution degree because of potential for accumulation of various pollutants in the catchment area for a long period of time. The main aim of the study is the assessment of the environmental status of watercourses by the change of heavy metals in sediments of small rivers affected by reclamation in the Sredneamurskaya lowland, compared with the baseline values, and during the growing season. The authors have found that the content of heavy metals in sediments in the background points differ significantly from each other, and the concentration of natural pollutants is higher by several orders of magnitude than the natural and man-made ones. The bottom sediments selected from points in the background when there was a significant migration of heavy metals from flooded flood-plain soils have the highest coefficients of total pollution. In the points investigated the total water content influences due to the coefficient of surface and drainage runoff the decrease of concentration of sediment pollution in comparison with the background. Agricultural drainage reclamation has a direct effect on bottom sediments; the latter can turn into a source of secondary pollution of surface waters.|
|Subjects:||Agrochemicals; Geochemistry; Heavy metals; Hydrochemistry; Hydrology; Pollutants; Pollution; Reclamation; Rivers and streams; Asia; Commonwealth of Independent States; Russian Far East; Russian Federation; Sredneamurskaya Lowland|
|Copyright Information:||GeoRef, Copyright 2020 American Geosciences Institute. Reference includes data supplied by ICSTI, Moscow, Russian Federation|
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