The ecological niche of Vallonia pulchella (Muller, 1774) was investigated by means of the general factor analysis of GNESFA. It was revealed that the ecological niche of a micromollusk is determined by both edaphic factors and ecological features of vegetation. Ecological niche optima may be presented by integral variables such as marginality and specialization axes and may be plotted in geographic space. The spatial distribution of the Vallonia pulchella habitat suitability index (HSI) within the Technosols (sod-lithogenic soils on red-brown clays) is shown, which allows predicting the optimal conditions for the existence of the species.

The set of performance speed permeability experimental versions mounds of tehnozems designed to search for the best technological solutions for reclamation of disturbed mountain design land within the Nikopol manganese ore Basin have been discussed in the present article such as pedozems (tehnozems formed using bulk humus soil), litozems (formed only rocks without humus bulk soil): sod-litogenic soils to gray-green clay, the reddish-brown clays and loams on loess-like clays. The speed of tehnozems water permeability has been explored by the conventional method. Research conducted on test plots of land reclamation Dnipropetrovsk State Agrarian and Economic University. Research facilities have been 57 models with various options mound tehnozems ground. Based on research built graphics dynamics permeability. The data indicate that the models studied mound soil infiltration process of transition to a filtration significantly prolonged the time. Even in a stable phase permeability for tehnozems observable characteristic combination of filtration and infiltration processes. It is shown that the design soil-like body in the zero-point of its existence, the dynamics and trajectory of soil formation. The study of the dynamics of tidying up water from the soil surface is highly informative tool for evaluating the properties of the soil body without violations. The resulting dynamic curves along with high resolution differential is environmentally relevant, that reflect the properties of the soil as the habitat of living organisms. Differential capacity curves tidying water appears that there are significant differences between the movement of moisture in soil in the studied sites, depending on their structure. For ordinary chernozems permeability characteristic features of the process is monotonic dynamic speed limit tidying water and that clearly differs between phase infiltration and filtration. Switch phase filtration is the first experiment. For the studied models tehnozems the speed permeability characterized by a significant variation with relatively monotonous trend, which is the reduced rate of tidying water and eventually reach a certain steady state. Such deviations from the general trend manifest itself in the form of high speed flash permeability observed at regular intervals. These intervals are specific to each type of construction tehnozems.

Dynamic changes in forest ecosystems, which can be both short-term and long-term, are assessed on the scale of long-term biologically determined stages, through the determi-nation of age parameters. In this context, the results on the dynamic changes of the components of the aboveground phytomass of Scots pine in the northern steppe zone of Ukraine are presented. Based on the simulated growth tables of the studied modal artificial pine stands, standards for the dynamics of their bioproductivity have been developed for such components of aboveground phytomass as trunk in bark, branches in bark and needles. Modeling and statistical evaluation to determine the phytomass of the aboveground part of the pine stand: wood and bark of the trunk, branches and needles of the crown in a completely dry state. Tables of theoretical distribution of indicators of components of phytomass of pines for an age category from 10 to 80 years are con-structed. Regularities of phytomass changes of trunk components in bark and crown for stands of I–IV classes of quality were found. It is established that the dynamics of changes in the components of both the stem part and the components of the crown is characterized by a gradual increase in phytomass with age. The trend of dynamic changes is similar for all studied rating classes. It is ob-vious that stands of the first quality have the highest productivity of the studied classes. Decreased creditworthiness is accompanied by a gradual decline in productivity. It is investigated that the most significant differences in the phytomass parameters of different qualities are characteristic of older stands. It is calculated that the phytomass of the trunk in the bark varies from 5.4 t/ha (10 years) to 144 t/ha (80 years), and the nature of changes in the phytomass of the crown with age actually reflects the trend of phytomass dynamics of branches compared to pine. A comparative assessment of the dynamic changes of phytomass components of pine stands of the northern steppe part with the results of bioproductivity of pines of Ukrainian Polissya and Forest-Steppe, forest-steppe and northern-steppe regions of the European part, Kazakhstan and Siberia is given. On the basis of the received tables of dynamic changes of bioproductive processes in pines of the Northern Steppe the theoretical substantiation of practical use of normative-reference material for conditions of steppe part of Ukraine is made. The obtained results provide an opportunity to assess the current state of pine forests in the study region and predict the dynamics of their changes, which will allow the objective implementation of forestry measures, taking into account the regional peculiarities of pine formation.

The industrial enterprise for the extraction of polymetallic ores Vilnohirskyi Mining and Metallurgical Integrated Works (MMIW) has assumed the responsibility for the removal and sewage treatment of industrial and communal significance. An essential part of the total wastewater discharge enters into the Samotkan river from the largest waste dump called as Skazhena ravine. Sludge setting tank in Skazhena ravine is located on the left bank of the Samotkan river. Kamianske reservoir is a receiving water of debalance wastewater of the plant according to the current permit for special water use, issued for the Vilnohirskyi MMIW. The discharge of waste water from the storage tank into the Skazhena ravine is carried out in the sanitary protection zone of Verkhniodniprovskyi and Aulskyi water intakes. The site of the water object, which is the release of wastewater from the reservoir in the Skazhena ravine is located within the boundaries of the settlement of the city of Verkhniodniprovsk. The tail farm in the Skazhena ravine is a place of waste depository, which are formed at the enriching plant in the process of developing the Malyshevskyi deposit of polymetallic ores. The chemical composition of the Samotkan river is formed under the influence of surface runoff and groundwater runoff , a drainage inflow from the Kamianske reservoir, evaporation of water from swamps, bodies of water, and discharges from the sludge setting tanks (reservoirs) of the Vilnohirskyi MMIW. Comparison of the calculation data of complex pollution with established by means fishery maximum permissible concentrations showed that the water of the Dnipro river at the place of its sampling in the Verkhniodniprovskyi water intake was estimated as "moderately polluted". But, taking into account the requirements for communal needs, water is characterized as "pure". The concentration of substances in the return water does not exceed the maximum permissible concentrations in the conditions of communal use of the water object. Changing the channel of the Samotkan river, transformation of several beams into slime tanks, and dumping the quarry waters in Kamianske water storage is a challenge for urgent search of the optimal technologies for solving these problems.

The parameters of wood density (WD), bark density (BD) and tree crown characteristics are not only important for estimation of the aboveground biomass, but they also serve as indicators for the timber quality. This study had two objectives: Black locust (Robinia pseudoacacia L.) – an introduced species; Scots pine (Pinus sylvestris L.) – an aboriginal species. Black locust and Scots pine from the Steppe zone in Ukraine were compared in their WD and BD, and in the morphological parameters of their tree crowns. There were determined basic WD and BD for differently aged individuals of Black locust and Scots pine. Generally, a higher WD was found for Black locust trees. The average Black locust WD was 518 kg m−3, ranging from 375 kg m−3 to 612 kg m−3; with the average BD – 294 kg m−3, ranging from 214 kg m−3 to 421 kg m−3. The average Scots pine WD was 414 kg m−3, ranging from 254 to 491 kg m−3; with average BD – 317 kg m−3, ranging from 178 to 433 kg m−3. The dependences between WD, BD and biometric tree parameters were identified by correlation analysis. The crown diameter for Black locust and Scots pine was described with fixed prediction models. We proposed particular equations for relationships between foliage biomass and branch biomass, derived from the crown volume of the investigated species.