Sinecological principles for chemical soil remediation for urbogenesis conditions
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2019-08-15 09:32
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ZAIMENKO, Natalia, SLYUSARENKO, Olexandr. Sinecological principles for chemical soil remediation for urbogenesis conditions. In: Conservation of plant diversity, Ed. 3, 22-24 mai 2014, Chișinău. Chișinău: Gradina Botanica (Institut), 2014, Ediția 3, p. 133. ISBN 978-9975-62-370-4.
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Conservation of plant diversity
Ediția 3, 2014
Simpozionul "Conservation of plant diversity"
3, Chișinău, Moldova, 22-24 mai 2014

Sinecological principles for chemical soil remediation for urbogenesis conditions


Pag. 133-133

Zaimenko Natalia1, Slyusarenko Olexandr2
 
1 M. M. Gryshko National Botanical Garden of National Academy of Sciences of Ukraine,
2 Odesa I.I.Mechnikov National University
 
Disponibil în IBN: 20 mai 2019



Teza

Introduction Unbalanced anthropogenic infl uence on natural ecosystems during many decades has caused signifi cant technogenic damage on soil ecosphere. As the result, soil degradation in most territories of the planet has occurred. According to the data of International global assessment of soil, degradation processes of various types cover more than 2 billion hectares, of which 12.2 % due to chemical factors (salinity, acidifi cation, pollution, depletion on mineral nutrients). Material and methods Modifi ed with organic acids silicon-containing minerals (tripoli and analcinite) were used in a ratio of 2:1 and enriched with sapropel. This mixture was introduced into the soil in a quantity of 50-100 grams per square meter. Plants and soil were tested for heavy metals and mineral nutrients content. Features of the distribution of assimilants were analyzed. Results and discussions Most ecologically attractive, economically viable and therefore perspective method of detoxifi cation of soils is the method of chemical remediation and melioration. This method involves the joint use of natural silicon-containing minerals and organic materials. First, we demonstrated that high effi ciency of applicated into the soil minerals are due to the formation of high-molecular poly-silicon acids in the soil. And specifi c silica matrix with high catalytic properties is formed. With the participation of matrix of poly-silicon acids, the mechanism of stress protection in plants is activated from such factors as soil pollutants, salinization, drought, and temperature changes. Organic matter, in particular sapropel helps silicon supply to a plant, stimulates synthesis of poly-silicon acids, and activates microbiological processes in a soil. If the mixture of silicon-containing minerals and sapropel was applicated into the soil, supply of hard metals into plant reduces by 38-40 %; irrigation rate reduces by 29-31 %; fertilizer application rate reduces by 45-55 %. Conclusions The use of the mixture of modifi ed silicon-containing minerals and sapropel for urban plantatoins will allow increasing plant resistance to soil and air pollutants, pests and diseases, and moisture and nutrient defi ciency.