Особенности геохимического состава почв прибрежной части юго-западного Приморья

Abstract

The large diversity of the soil cover in the southern regions of Primorye makes it difficult to assess the current ecological state of soils on the basis of data from single background pits. More than 220 samples taken from topsoils of main types of background soils were analyzed by atomic absorption by atomic method to reveal the geochemical composition of soils in the coastal territory of the region, the background content of heavy metals was established. The features of accumulation of pollutant elements in the surface layer are revealed. The content of vanadium, chromium, cobalt, nickel, copper, zinc, cadmium, and lead is much lower clark. No significant difference was found between the content of heavy metals in the soils of high and low sea terraces (Histosoils, Gleysols), riverine plains (Fluvisols, Histosoils,) and outlier uplands (Albic Stagnoso, Cambisols). A series of the intensity of accumulation of total forms of elements Cu > Zn > V > Cd > Co > Ni > Pb > Сr was determined. The average values of the various geochemical indices indicate the absence of pollution and a low level of potential ecological risk of the soils of the study area, therefore, using the received data as background data is correct. The territories of neighboring states can be a potential source of pollution of the region during atmospheric transport due to the higher content of pollutant elements in soils.