| Abstrakt: |
At present day, Russia's Far North with its extreme conditions is characterized by intensive destruction of native vegetation and its replacement by secondary communities, presumably able to exist in anthropogenically disturbed habitats. Therefore, it is highly relevant to study the development of artificially created phytocenoses (biosystems), most particularly producers being the system's foundation. When vegetation cover is disturbed, heat exchange between soils and atmosphere increase, permafrost thawing and degradation accelerate. Thus, there is a strong need for a better understanding of permafrost distribution, temporal evolution of the ground thermal regime and the preserving role of vegetation cover in these regions. When producers are used to restore the vegetation cover, it is commonly assumed that soil stabilization improves soil microclimate and hydrothermal conditions and makes it more sustainable, which helps to reduce permafrost thawing. Studying the patterns of phytocenosis development after biological reclamation, is undoubtedly one of the most important approaches to scientifically credible restoration of phytocenosis in Russia's Far North. [ABSTRACT FROM AUTHOR] |
