The green moss elemental composition of the background and industrially disturbed areas

Data on the chemical composition of green mosses - Pleurozium schreberi and Hylocomium splendens in the forest ecosystems of Murmansk Region, including the territory of protected natural territories - Lapland Biosphere Reserve and Pasvik Strict Nature Reserve were presented. The chemical composition of green mosses in the forests of different types was revealed. The content of mobile macronutrients N, P, K in green mosses is significantly higher in birch forests than in spruce and pine forests. Differences in the elemental composition of mosses growing in the crown protected areas and between crowns were detected. The highest concentration of mobile elements N, K, P, Mg, Cu was observed in current increments; Al, Fe, Ni - in the long-lived shoots. The most significant changes were revealed in the chemical composition of the green moss growing in crown protected areas of spruce forests and birch forests rich in herbs. The background concentration of Ni and ^ in green mosses do not exceed 3 and 7 mg/kg, respectively. The concentration of heavy metals (Al, Fe, Ni, Cu) and sulfur in green mosses was increased according to the pollution gradient. In close proximity to the local source of pollution, in sparse forests, the concentration of CA, K, P, Mg, Mn was significantly lower against the background levels. At the same time, the content of carbon and nitrogen was increased.