Biological Activity of Microbial Communities in Soils of Some Russian Citiesстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 29 июля 2020 г.
Аннотация:Abstract—Comprehensive studies of soils in some Russian cities (Nadym, Yaroslavl, Moscow, Chelyabinsk,Kursk, and Sochi) were carried out. In relation to natural analogues, the direction and degree of changes inthe properties of the upper soil horizons and the state of soil microorganisms are controlled by the naturalzone, where the city is located, and by the kind and level of anthropogenic load. Most often, the Corg content,pH, and the electric conductivity in urban soils of northern regions reliably increase in comparison with thosein their natural analogues, while urban soils in southern regions manifest diverse trends. In the soils of all cities,the number of cultivated prokaryotes increases reliably (by 1.5–5.2 times), as well as the percentage of microorganisms–indicators of urbanization, such as actinomycetes (by 33–71%) and Rhodococci (by 18–27%)secreted on selective media. According to the degree of soil transformation, urban landscapes may be rankedas follows: park-recreational, residential, residential-transport. The intensity of the functional activity ofmicroorganisms points to the disturbed biogeochemical cycles of elements in urban soils. The emission ofcarbon dioxide and methane, as well as nitrogen fixation, displays an intricate dependence on the position ofthe city in the natural zone and on the level of anthropogenic load.