Grounded the method for predicting of trace elements (TE) and heavy metals (HM) content in the soil system of different genesis were examined on the example of soils in different natural-climatic zones of Ukraine, contaminated soils in Kharkiv, Donetsk and Lugansk regions, and intensive fertilizer (organo-mineral, organic and mineral system of fertilizers) of soils in Kiev, Kharkiv, Poltava and Lviv region. In the developed methodical approach by using the parameters indicators of the energy state of the soil (calorific value of humus, the reserves of energy in the soil layer of 0–20 cm) using mathematical models and the spread of the algorithm of the method on other soil types of a particular natural-climatic zone in the conditions of technogenic pollution and technological load is predicted the TE and/or HM content in soils of different types, which ensures the rapidity of the assessment and improve the accuracy of the trace element status prediction, energy and humus state of soils of different genesis with the identification of soils ecological differences to predict their quality by assessment of ecological functions for the ranking of energy intensity indicators of the soil. Scientific elaboration of a method for predicting levels of chemical elements in soils of different types on the natural environment, the effects of man-made pollution and technological load, should be used in the environmental regulation of the TE content and normalization of loads (technogenic, technological) on the soil system, agroecology on issues of organic farming, bioenergy and energy of soil formation; diagnosis, estimation, prediction of humus quality and the of TE status and the danger of excessive accumulation of HM in the soil for indicators of the energy state; the effective environmental management of soils as in natural conditions, and the influence of various anthropogenic factors, taking into account their ecological functions; in research practice – for system research of natural components of the biosphere, the assessment of carbon sequestration in soils and assess of their quality. Distinctive features and advantages of the proposed elaboration in comparison with known methods and approaches are: greater predictability of energy and trace element status, humus and ecological state of the soil as a whole to prevent the degradation of soil organic matter and reduction of risks of influence of HM technogenic pollution; rapidity of obtaining and improving the accuracy of the predictions of the HM and TE content in the soil; universality way to suitability of the method for all soil types in different climatic zones; stimulating further research in the field of energy of soil formation and solution of practical tasks of conservation and restoration of soils functions, identification optimal energy cost and taking into account the ecological functions of soil certain type.
The application of sewage sludge as a fertilizer in podzols soil ambiguously affects the peculiarities of the accumulation of certain chemical elements in various organs of the Jerusalem artichoke plants. Experimental factors in the study were different doses of sewage sludge from sludge maps of wastewater treatment plants and its compost with cereal straw, included together with the compensatory dose of mineral fertilizers to the norm N 90 P 90 K 90 in the Jerusalem artichoke plantation. Determination of the content of chemical elements in soil and plants was carried out by X-ray fluorescence analysis. According to the results of research, it was established that the change of mineral nutrition conditions of Jerusalem artichoke causes significant changes in the chemical composition of its tubers and vegetative mass. Studies have shown a clear positive effect of increasing doses of SS on increasing the content in tubers: K -to 7.9%, Ca -to 1.9, Fe -to 1.9, in green mass: O -to 31.8%, K -to 31.6, Ca -to 24.9, Mg -to 5.9, Mn -to 0.7, Fe -to 0.4 and K -to 34.5%. The coefficients of biological absorption for most chemical elements are more than 1, but for O, Al, Si, Fe, these figures were less than 1. Regression models of phosphorus, potassium, calcium and magnesium content in the vegetative mass of Jerusalem artichoke indicate a high and moderate dependence of these indicators on their content in Jerusalem artichoke tubers and soil.
Application of sewage sludge (SS) as a fertilizer contributes to the intensity of Zn, Ga, Y, Zr, Rh, Pb uptake by Jerusalem artichoke plants. Also, the translocation coefficients of Zn, Sr, Y, Rh, Pb vary in a wide range of values, depending on the level of use of SS. Jerusalem artichoke culture is characterized by a significant potential for biological absorption of Ni, Cu, Zn, Ga, Y, Nb and especially Rh, and the translocation coefficient of all studied heavy metals was ˃1. Jerusalem artichoke is characterized by certain features of intra-tissue pollution by heavy metals under the influence of SS application, which leads to an increase in this indicator compared to the application of mineral fertilizers in an equivalent dose of Zn, Y, Zr, as well as Ni, Cu, Ga, Sr, Nb, Pb in the highest doses (option 6). The use of SS composts with straw in the experiment leads to a significant decrease in intratissue pollution indicators compared to the application of fresh SS. Moreover, increasing the dose of compost from 20 t/ha to 30 t/ha contributes to the reduction of intra-tissue contamination of plants with Cu, Zn, Sr, Zr, Nb, Pb. The highest levels of the Integral indicator of vegetation cover pollution are determined by the application of fresh SS at the SS rate of 40 t/ha + N 10 P 14 K 58 . Jerusalem artichoke culture, given its significant potential for translocation of heavy metals, can be successfully used for phytoremediation of technogenically polluted areas and grown with the introduction of SS as fertilizers.
Grounded the new elaborated method for predicting of trace elements (TE) and heavy metals (HM) content in the soils of different genesis, which was elaborated by analysis the indicators parameters of their organic matter and energy characteristics in different natural-climatic zones of Ukraine, also of contaminated and intensive fertilizer soils. The method aims for the assessment of soils ecological-energy state due to the installation of the new natural relations of indicators humus, energy and elemental status of soils of different types, as a result, expanding the range of diagnostic indicators with identifing their paired combinations and simultaneously increasing of informativeness, accuracy, express testing of chemical elements (TE, HM) predicting levels, energy and humus state of soils to predict and ecological regulation of their quality. The essence of the elaborated utility model – by the identify of new patterns of soil properties indicators and receive four matching pairs of humus (CGA/CFA, Ctotal), elemental and energy state (calorific value of humus, the reserves of energy in the soil layer of 0–20 cm) as soil indicators with the using of mathematical-statistical analysis of the obtained regression equations for the accurate determination is predicted the TE and HM content in soils of different types of background conditions, with the distribution algorithm of the method for different soil types in certain climate zones in the conditions of technogenic pollution and technological load, risk and the presence of man-made pollution to make timely management decisions. Elaborated method ensures the rapidity of the assessment and improves the accuracy of the TE/HM status prediction, energy and humus state of soils of different genesis with the identification of soils ecological differences to predict their quality by assessment of ecological functions for the ranking of energy intensity indicators of the soil. The method is applicable in the environmental regulation of TE and HM content, regulation of the loads (technogenic, technological) on a soil system, agroecology to address issues of biological agriculture, bio-energy and energy of soil formation; monitoring the quality of humus and the status TE and the dangers of excess accumulation of HM, in the soil humus indicators and /or energy state; efficient environmental management of soils, both in background conditions and with different anthropogenic impacts and in the research practice. Grounded the method was examined on the of soils simples in different natural-climatic zones of Ukraine, contaminated soils in Kharkiv, Donetsk and Lugansk regions, and intensive fertilizer (organo-mineral, organic and mineral system of fertilizers) of soils in Kiev, Kharkiv, Poltava and Lviv region.
Розглянуто результати досліджень вмісту важких металів у профілі дерново-підзолистого ґрунту Передкарпаття за внесення, в умовах польового 3-річного досліду, осаду стічних вод, як засобу удобрення верби енергетичної. Виявили, що такий захід сприяє підвищенню вмісту важких металів, зокрема, кобальту і нікелю в елювіальному горизонті (Е), а свинцю і кадмію-в гумусовоелювіальному (НЕ), а також викликає достовірне зростання вмісту важких металів (у межах ГДК) у вегетативній масі верби. Основна маса поглинутих полютантів утримується рослинами в їхній підземній частині. Застосування осадів у вигляді компостів з тирсою, або соломою визнано дієвим способом посилення безпечності їх використання, оскільки викликає достовірно менше накопичення важких металів у ґрунті та вегетативній масі верби за тієї ж норми внесення. Ключові слова: осад стічних вод (ОСВ), важкі метали, верба енергетична, ґрунт.
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