Norms of change of physical properties of arable land have been developed chernozems of steppe, chestnut soils of dry-steppe and light-chestnut soils of desert steppe zones of the European territory of Russia depending on the nature of anthropogenic impact. The limits of optimum, admissible and critical values of physical properties of these soils for growth and development of plants are established. For each zone, expert estimates of the distribution of soil areas with optimal, acceptable and critical values of the basic physical properties of soils are given. The greatest differences are observed in the density and structural composition of soils of different soil-climatic zones. In the steppe zone, soils with optimal values of arable layer density prevail among ordinary chernozems (1.0 - 1.2 g/cm3); among pre-Caucasian and southern chernozems - with values of 1.25-1.35 g/cm3. Among the chestnut soils of the dry-steppe zone the most common are the differences in the permissible values equilibrium density (1.30-1.40 g/cm3); in the desert steppe zone light chestnut soils with permissible (1.35- 1.45 g/cm3) and critical values (>1.45 g/cm3) of the equilibrium density. In the arable layer of soils of each separate zone agrophysical properties are significantly reduced by agrotechnical measures and close requirements of crops cultivated in the zone. Norms of change of physical properties can serve as a guide for assessing the current physical condition of arable soils and a basic basis for the development of regional fertility conservation and reproduction systems of the soil.

The regularities of moisture behavior in the system of surface air - vegetation cover - soil with the use of moisture potential are established. It is shown that the moisture potential in soil, leaves of plants, changes in the moisture potential in the soil-plant system, and relative transpiration is related to functional dependencies. It is well established that each group plants (hygrophytes, mesophytes
and xerophytes) is characterized a certain narrow range of soil moisture potential, in which the relative transpiration values do not fall below the optimal level (1.0-0.9). This interval is virtually independent of soil properties and meteorological conditions и can be used as the optimal criterion for plant moisture supply.

The microelement composition of the water-bottom sediments-macrophytes-macrophytes-macrofauna system was considered р. Cupid. Installed minimal and the maximum concentrations of trace elements in of its individual components. It is shown that the content of microelements in biological objects decreases in the following order: algae > macrophytes > ichthyofauna. The most informative biological object of microelement accumulation in the Amur ecosystem are algae. Accumulation of Fe, Mn, Zn and Cu in bottom sediments is associated with the formation surface complexes of metal cations with clay minerals and with their accumulation of diatoms.

In Russia, as a tentatively permissible concentration (ODK) use fixed concentrations of heavy metals/metalloids. Proposed in 1987 by SanPiN and the principle of flexibility developed in the Netherlands in 1997 к The assessment of the CST*, addresses many of the disadvantages of a fixed CST, as it is based on the sum of the local background metal content and the maximum allowable additive.
At this stage, the flexible approach does not take into account all of the following of the pollutant's behavior in the soil, although the transition from concepts of fixed standards to the flexible is to move in the right direction. The development of a flexible approach is proposed to the assessment of the UEC, taking into account the inert fraction of the pollutant. Examples have shown that soil contamination with heavy metals is in some cases significantly higher in the assessment using the flexible criterion of the UEC. The application of the flexible UEC** criteria, taking into account the inert fraction in the soil, will be possible after the improvement of the system of chemical extraction of highly contaminated soils.

The study of metals in oil-contaminated peat has double meaning. Firstly, it is diagnostic as convenient and simple The method of soil condition monitoring, and secondly, the ecological method to predict the state of the peat bog as a biocenosis element. Every pollutant elements in contaminated peat are divided into two bands. Some of them (Ti, V, Cr, Ni, Zr, Ba, Y, La, Ce, Nd) accumulate in the upper, bituminous layer of peat. Other elements (halogen chlorine, as well as metals: Ca, Mp, Zn, Cu, Sr), on the contrary, migrate deep into the peat layer with light fractions hydrocarbons. For capturing particularly moving Cu metals, Zn needs to be equipped with artificial geochemical barriers to prevent pollutants from entering groundwater and open ponds.

On the basis of field research by the authors, carried out in 2005- In 2009, the chemical properties of solonetz soils were characterized the complexes of the eastern part of Yergeny within the Republic of Kalmykia. In Yergeny, the share of saline soils in the upper part of the Yergeny River is 50-75%; the share of saline soils in the upper part of the Yergeny River is 10-25%, in some places up to 25-50 and 50-75% from the complex square. The solonetzes of the studied area include to the superficially saline soils are strongly saline from 20 (fine saline) or 50 cm (deep saline). In light chestnut soils salinization appears deeper than 1 m, less often from 50 sm. Salt composition of solonetzes refers to chloride and chloride-sulfate soils; light chestnut soils belong to sulfate varieties.