Exposure of industrial pollutants including styrene, formaldehyde, acetone in the concentration range of maximal permissible concentration of working zone on leaves of silver birch (Betula pendula) and English oak (Quercus robur) chosen as model objects were studied and a mechanism of degradation was proposed. At a macroscopic level an indicator role of the leaf pattern for industrial organic pollutants with various functional groups was established. The differentiated effect of biotoxicants revealed selectivity of chemical reactions and appearance of various products of these reactions on the surfaces of the leaf blade. For all studied objects, systemic IR spectroscopic studies of cuts from oak and birch leaves were carried out. The characteristic frequencies testifying to interaction of pollutants with leaf tissue have been identified. The criteria for the control of tree plantations have been proposed, manifesting in a combination of two methods: at the macroscopic level, by establishing the indicator role of the pattern, and at the molecular level, by IR spectroscopic determination of chemical interaction in the system "functional groups of biotoxicants - leaf blade". The studies carried out make it possible to create a database of industrial pollutants and propose interrelated criteria for monitoring tree plantations.