Chemerys I. Ecological state formation of forest biogeocenoses in the influence zone of chemical enterprises of Cherkassy.

The objects are Pinus sylvestris biogeocenoses of Cherkassy and Prytasmyn forests. The aims are to study the biological gears of influencing technogenic aerotechnogenic pollutante on a Pinus sylvestris biogeocenoses and to analyze their present ecological condition in affected area of chemical enterprises of the Cherkassy industrial agglomeration. The methods are physical and chemical, cytogistological, morphometric, geobotanical descriptions, wood taxation, phytoindication. On the basis of research of phytostrome of Pinus sylvestris L., the conclusions of chronical damage to Cherkassy forest by aerotoxicants were made the signs of which are changes of photosynthetic apparatus, morphological break of tree state, morphology-anatomical changes needles of conifer, break of reproductive function as a result of male gametophyte pressure, aside increase of Pinus sylvestris L. crust. The possibility Lemna minor L. use was proven for test-object under acidening of natural water. The recommendations for increasing stableness of forest ecosystem to aeropollutants were elaborated and peculiarities were determined to form green zone of towns under conditions of chronical acidening of atmospheric air. The sphere of use are monitoring, phytoindication, training courses.