Scientific journal
Scientific Review. Biological science
ISSN 2500-3399
ПИ №ФС77-57454

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ENZYMATIC ACTIVITY OF RECREATIONAL LANDSCAPES SOILIN URBAN AREAS

Zabelina O.N. 1
1 Vladimir State University n.a. A.G. and N.G. Stoletovs
A study of the enzymatic activity of natural and recreational landscapes soil of the city (parks, squares, boulevards, avenues) was held to assess its ecological status. The work was carried out to measure the activity of enzymes which catalyze the most important biochemical processes occurring in the soil: catalase, responsible for the decomposition of hydrogen peroxide, urease, catalyzes the hydrolysis of urea and cellulolytic activity. Results of the study of soil urease activity showed that the rate of decomposition of urea in the topsoil in squares and boulevards and parks in areas exposed to the influence of roads, changes in the range of 1.5–2 h and can be considered high, in the central part of the park the rate of decomposition of urea is reduced to an average of 4–5 hours. The values of catalase activity showed spatial variability, but in general showed fluctuations within 0.2–0.53 ml KMnO4 / 1 g soil in 20 min. Topsoil of recreational areas, in most cases, possess a high cellulolytic activity compared to the underlying layers, in a layer of 0–10 cm of soil degradation observed unbleached linen cloth strips by 20-30 % at half the samples, in the 10–20 cm layer in a half sampling decomposition of tissue was 10–20 %.