A concept of trophy status in connection with anthropogenic eutrophication of raised bogs in the Khanty-Mansy Pre-Ob region

Abstract

A concept of trophy status of bogs in the soil classifications of Russia and Germany and in WRB is reviewed. A list of plant indicators of trophy status in Khanty-Mansy Pre-Ob region is presented. The specific features of anthropogenic eutrophic peat soil are pH > 4.5 (in topsoil) and meso-eutrophic vegetation, forming eutrophic turf over oligotrophic peat. There are several ways of anthropogenic soil formation as a result of oil production impact.

The use of unmanned aerial photography for interpreting the technogenic transformation of the natural environment during the oilfield operation

“…The obtained conclusions confirm the study of the anthropogenic dynamics of plant communities in oligotrophic bogs at oilfields in the forest zone of Western Siberia, where the following signs were also noted in the contaminated areas: the appearance in the tree-shrub layer of species atypical for raised bogs, rushes and young plants [37]; morphometric changes in young wood pine specimens [38]; the appearance of graminaceous plants in the herbaceous-shrub layer; active development of mesotrophic and eutrophic species, mainly from the Cyperaceae family [37], as well as suppression and decrease in the abundance of oligotrophic shrubs.…”

“…The analysis (Fig. 5) also demonstrated an increase in the degree of trophicity in contaminated areas, which was previously recorded by studies conducted in Western Siberia [37,38].…”

“…When studying vegetation in technogenic areas of oilfields, researchers pay attention to changes in the share of ecological groups in the composition of the phytocenosis structure, the introduction and increase in the abundance of individual groups of grasses [37], and morphological changes in tree stand [38]. There is experience in the use of UAVs for the restoration of the natural environment by bioremediation methods [39].…”