Ecological and biochemical assessment of bottom sediments of small water currents of the Ilevna river basin with using GIS

Pollution levels of bottom sediments of Ilevna river and its inflows by heavy metals, organic and biogenic substances have been established. Priority pollutants of bottom sediments of the river network on sources have been revealed. Calculation of total indicator of pollution (Zsum) and coefficient of average chemical elements accumulation (Rx) have been carried out according to content of amount of heavy metals in bottom sediments. Interrelationships between the content of pollutants in bottom sediments and indicators have been revealed. In accordance with materials of shuttle radar topographic mission (SRTM) with the spatial resolution of 90 m the digital model of a relief has been given. The river network, a watershed basin of Ilevna river and its subbasins have been singled out taking into account digital model of a relief and raster physical maps of the area. Digital cards of spatial distribution of the specified indicators, the pollutants, vegetation and population density have been obtained using of materials of the remote sensing of Earth and software packages of ArcGis 10.2, SASPlanet 160707.