INFLUENCE OF AIR POLLUTANTS ON PHOTOSYNTETIC FUNCTION OF AESCULUS HIPPOCASTANUM L. IN VARIOUS PARTS OF DNERPROPETROVSK

The state of the chestnut ordinary common to modify the content of chlorophyll and morphometric parameters in different environmental conditions and at different stages of ontogeny was investigated. The decline of the assimilation surface of trees, which is due to reduced leaf area and number, reducing the amount of chlorophyll pigments, the ratio of Chla / Chl b, which can be used as markers for stressful biological monitoring studies was set.