Specific features of Moscow woody plants in the accumulation of heavy metals

The accumulation of heavy metals (HM) in the leaves of woody plants has been studied on busy municipal highways in North-Eastern (NEAD) and South-Western (SWAD) administrative districts of Moscow. Background contents and their values exceeding Fe, Sr, Ba, Cr, Cu, Mn, Zn, Bi, Ni, Pb were determined. It was revealed that among deciduous tree species dominating in the city (Betula pendula, Acer platanoides, Aesculus hippocastanum, Tilia cordata, Fraxinus pennsylvanica), Betula pendula, Acer platanoides, and Tilia cordata have a high accumulation capacity of HM, which are characterized by accumulations of Zn, Mn, Sr. According to the content of HM in the leaves for the studied territories, an acceptable category of pollution and a greater contribution of the technogenic component is observed in South-Western Federal District in comparison with NEAD.