Total content of nitrogen and heavy metals in the mosses gametophyte and in upper layer of technogenic substrates of the mine dumps

The influence of bryocommunities on the chemical composition of technogenic dumps substrates was studied. It was established that on the investigated dumps, the total nitrogen content under the mosses exceedes its content in the substrate without plants. The microclimatic conditions on the dumps area affected the accumulation of nitrogen: in the conditions of great intensity of the solar radiation and moisture deficiency the content of nutrients decreased. Moss cover settling on the anthropogenic transformed territories influences on succession processes and contri­butes their renaturalization: positively influences on the enrichment of the surface layer of nutrients, in particular nitrogen and accumulating heavy metals removed them from their biogeochemical cycle, thus, reduced the toxicity of the substrate. Accumulation of pollutants in mosses corroborates their role as informative indicators of the environment pollution.