Abstract
The paper presents the results of comprehensive studies on the problem of formation of a deposit of heavy metals in plant communities of the West Siberian Arctic and Subarctic. The regularities of the concentration and redistribution of heavy metals in the soil-plant system have been revealed. Excessive accumulation of heavy metals by different plant species is limited by the selectivity of root absorption in relation to certain elements, and therefore it is important to calculate the coefficient of biological absorption. The interrelation between the intensity of recreational loading and change in the nature, grass cover structure.Among the identified pollutants that accumulate by plants identified a group of heavy metals and microelements (Pb, Sr, Cu, Zn, Ni ). It is shown that the linear dependence of the accumulation of metals in the system “soil-plant” is observed only in the range of low concentrations of pollutants in the ground growing. With high concentrations the reverse dependence occurs. Formulated, justified and tested methodical approaches to preparation of complex long-time observations of the natural ecosystems.
Highlights
IntroductionThe anthropogenic impact on the environment can be local (from a single factor) or complex (from a group of different factors)
The anthropogenic impact on the environment can be local or complex
The elemental series of heavy metals in decreasing order based on their concentrations in the soil and the total phytomass of the studied land plots is represented by the following combinations: Pb>Zn>Sr>Cr>Cu>Ni>Cd; Sr>Zn>Pb>Ni>Cu>Cr>Cd
Summary
The anthropogenic impact on the environment can be local (from a single factor) or complex (from a group of different factors). These impacts, as a rule, are characterized by different environmental hazard coefficients depending on the type of impact and its nature, as well as the object of impact. The phytotoxic effect of heavy metals is manifested, as a rule, at a high level of technogenic pollution of soils and largely depends on the properties and behavioristic features of a particular metal [1,2,3]. To understand the processes of migration and accumulation of heavy metals, it is important to take into account and distinguish the source of their entry into the environment. In the most general terms, natural and man-made sources of heavy metals are distinguished [4,5,6]. One of the scientific methods allowing objective study of biological objects (including plants), along with bioindication methods of assessment, is quantitative chemical analysis
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