Approaches for the complex assessment of polychemical pollution of permafrost-affected soils and the upper layer of permafrost

Лупачев, А. В.; Danilov, Petr; Лодыгин, Е. Д.; Tikhonravova, Ya. V.; Butakov, Vladislav; Усачева, А. А.; Ксенофонтова, М И

doi:10.1007/s10661-022-10270-x

Cited by 3 publications

(2 citation statements)

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“…As for Yakutia (Eastern Siberia), few data were obtained for Tiksi, Chersky, and Yakutsk in a comparison with the Tazovsky and Gaz-Sale settlements in the Yamal region [37]. In the urban soils of Yakutia, the O, T, A, and buried [A] horizons have been documented as the result of urban pedogenesis.…”

Section: Gravimetric Concentrations and Profile Distribution Of Organ...mentioning

confidence: 99%

Soil Organic Matter in Urban Areas of the Russian Arctic: A Review

et al. 2023

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Polar ecosystems are the most important storage and source of climatically active gases. Currently, natural biogeochemical processes of organic matter circulation in the soil-atmosphere system are disturbed in urban ecosystems of the cryolithozone. Urbanized ecosystems in the Arctic are extremely under-investigated in terms of their functions in regulating the cycle of climatically active gases. The role of urban soils and soil-like bodies in the sequestration and stabilization of organic matter is of particular interest. The percentage of gravimetric concentrations of organic matter in Arctic urban soils are almost always determined by the method of dichromate oxidation and are subject to extreme variability (from tenths of a percent to more than 90% in man-made soil formations), but the average carbon content in the surface soil horizons can be estimated at 5–7%. The surface humus-accumulative horizons are represented by a variety of morphological forms with the content of organic matter of various origins. The work also focuses on those forms of organic matter, the content of which is extremely small, but very important for the biogeochemical functioning of soils-polycyclic aromatic hydrocarbons and components of petroleum products, as well as labile forms of soil organic matter. We recommend that further studies of the organic matter system be conducted in urbanized areas since the carbon cycle there is severely disrupted, as well as carbon flows. The urbanization and industrialization processes in the Arctic are progressing, which could lead to a radical transformation of carbon ecosystem services.

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Section: Gravimetric Concentrations and Profile Distribution Of Organ...mentioning

confidence: 99%

Soil Organic Matter in Urban Areas of the Russian Arctic: A Review

et al. 2023

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“…This is also be facilitated by such co-occurring geomorphological processes as thermokarst and erosion, terminating in the exposure of deep deposits of organic matter [12]. However, at the same time, triggered by a changing climate, peat deposits containing significant amounts of bioavailable heavy metals (HMs) turn into sources of the toxicant migration into the environment [13][14][15]. Climate change and anthropogenic pressure caused by the intensive development of the oil and gas industry in the Arctic region result in a changed hydrological regime of the Arctic wetlands and the irreversible disturbance of peat layers.…”

Section: Introductionmentioning

confidence: 99%

Geochemical Characteristics of the Vertical Distribution of Heavy Metals in the Hummocky Peatlands of the Cryolithozone

Василевич

Vasilevich

Лодыгин

et al. 2023

IJERPH

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One of the main reservoirs depositing various classes of pollutants in high latitude regions are wetland ecosystems. Climate warming trends result in the degradation of permafrost in cryolitic peatlands, which exposes the hydrological network to risks of heavy metal (HM) ingress and its subsequent migration to the Arctic Ocean basin. The objectives included: (1) carrying out a quantitative analysis of the content of HMs and As across the profile of Histosols in background and technogenic landscapes of the Subarctic region, (2) evaluating the contribution of the anthropogenic impact to the accumulation of trace elements in the seasonally thawed layer (STL) of peat deposits, (3) discovering the effect of biogeochemical barriers on the vertical distribution of HMs and As. The analyses of elements were conducted by atom emission spectroscopy with inductively coupled plasma, atomic absorption spectroscopy and scanning electron microscopy with an energy-dispersive X-ray detecting. The study focused on the characteristics of the layer-by-layer accumulation of HMs and As in hummocky peatlands of the extreme northern taiga. It revealed the upper level of microelement accumulation to be associated with the STL as a result of aerogenic pollution. Specifically composed spheroidal microparticles found in the upper layer of peat may serve as indicators of the area polluted by power plants. The accumulation of water-soluble forms of most of the pollutants studied on the upper boundary of the permafrost layer (PL) is explained by the high mobility of elements in an acidic environment. In the STL, humic acids act as a significant sorption geochemical barrier for elements with a high stability constant value. In the PL, the accumulation of pollutants is associated with their sorption on aluminum-iron complexes and interaction with the sulfide barrier. A significant contribution of biogenic element accumulation was shown by statistical analysis.

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