Urbanization Impact on the Ecological State of Soil in Uralsk Town

EasyChair Preprint no. 4654

Abstract

Inclusion of new micro districts to town, formal enlargement of green space, as well as increase of cars during the last decade caused degradation and deformation in the ecological state of Uralsk town’s soil. With the aim of soil ecological state diagnostics soil samples were retrieved in the zone of roads, service stations. Samples were selected from the depth of about 0-20 sm, as urban soil is characterized as anthropogenically transformed and has communication wires.

Urban soil was researched on heavy metals, petroleum products presence, pH  and the biological activity of the soil. Cellulosolic activity of the soil was determined by the rate of degradation of the linen tissue. Heavy metals were determined by atomic absorption and oil products by fluorometric methods. Measurements of topical acidity of soils were determined by potentiometric methods.

Based on several factors, analysis of the urban soil identified its typical technological distribution: compaction, gravel and anthropogenic inclusions, the content of the pollutants above the permissible values. Negative impact of technogenesis on the urban soils is reflected in the biological activity reduction and increased concentration of heavy metals and petroleum products. Marked excess is occured in the level of lead, zinc and cobalt. Soil far away from highways and potential contamination sources do not exceed  maximum permissible concentrations.

The credibility of the integral indicator - soil biological activity between the studied values showed the possibility of using this parameter as a reliable criterion for predicting their condition.

Keyphrases: anthropogenic impact, heavy metals, Lead (Pb), Soil-ecological parameters, Urbanized cities

@Booklet{EasyChair:4654,
  author = {Zhannar Gumarova and Sandugash Sungatkyzy and Azamat Sarsenbayev},
  title = {Urbanization Impact on the Ecological State of Soil in Uralsk Town},
  howpublished = {EasyChair Preprint no. 4654},

  year = {EasyChair, 2020}}