The Stability of Ecosystems Cryolithozone in the Extraction Hydrocarbon Feedstock

Yana Legostaeva, Marta Ksenofontova, Anna Gololobova
2017 Proceedings of the 2nd World Congress on Civil, Structural, and Environmental Engineering   unpublished
The results of the analysis of trace-element composition of the major abiotic components of ecosystems oil fields located in the permafrost zone -snow cover, permafrost soils, natural surface water and sediment are presented in the article. Snow is characterized by a weakly acidic medium with mineralization 8,4-14,9 mg / dm3 with very soft water, on the sites of acting wells of the field. The composition of the snow water is mainly hydrocarbonate class with a predominance of calcium and
more » ... m cations. The majority of the analyzed of ash elements are in a soluble state, in microelement composition of snow water are fixed Mn, Cu and total Fe. Soils of natural landscapes of study territory are characterized by a weakly acidic or near neutral pH in the upper organic horizons and weakly alkaline pH in the mineral part of the soil profile, and with sufficiently high content of humus and high cation exchange capacity. Soils technogenically transformed landscapes are characterized by weakly alkaline and alkaline pH, organic matter content and the cation exchange capacity varies widely. On the example of the microelement characteristics of the soil cover on the territory of oil and gas field are traced variation content of mobile forms of trace elements in soils. The activities of the oil and gas complex of significant impact on the quality of natural waters does not exert, at the moment of study. Microelement spectrum of sediments are characterized by the accumulation of mobile forms of Ni, As, Cr, Cu, Cd. The impact of oil and gas complex in the study region is manifested of locally at the moment, but is irreversible.
doi:10.11159/awspt17.111 fatcat:lrbhkwc5dba7rowp7solocfmva