The biogeochemical activity of exotic gymnosperm species in industrial urbanised ecosystemsAbstract
This paper presents data on the biogeochemical activity of 9 exotic gym-nosperm species in a model urban ecosystem with a high level of anthropo-genic pollution (Russia’s Non-Black Earth zone). The author examines data on the biogeochemical activity of Thuja occidentalis, Juníperus sabína, and Picea pungens in the conditions of polymetallic contamination of air and soils in the area affected by iron and steel plants. It is shown that most Gym-nospermae species accumulate such macroelements as K, Ca, and Cl. Thuja occidentalis accumulates V, Cr, Fe, Ni, and As in the area affected by iron and steel plants and is sensitive to emissions. The Ni concentration in the or-gans of Thuja is reduced in the conditions of polymetallic pollution. Picea pungens can accumulate iron in the area affected by iron and steel plants; its shoots can also accumulate Cr, Fe, Ni, Zn when affected by transport emis-sions. Juníperus sabína, Thuja occidentalis, and Taxus baccata accumu-late significant amounts of V, Cr, Fe, Ni and As in vegetative organs.