Biogeochemical cycles in tundra ecosystems in areas impacted by gas industry facilities.

Data acquired by monitoring modern biogeochemical cycles in tundra ecosystems in zones impacted by facilities of the gas industry indicate the absence of any perceptible changes in the system surface water-bottom sediments-soil-plants and show that the emitted nitrogen oxides beneficially affect productivity of the lichens and the functioning of the tundra ecosystem as a whole. [ABSTRACT FROM AUTHOR]