The reaction of the urban soil-plant complex on abnormal weather conditions

Abstract

This research is devoted to the study of geochemical features in the soil-plant complex of green spaces in Saint-Petersburg and their changes in abnormal weather conditions, which was the first experience of such work in this region. It included the research of such aspects as accumulation of heavy metals by plants from the soil, photosynthetic pigment apparatus of plants and the content of organic carbon in the soil. The X-ray fluorescence analysis method was used to determine the content of heavy metals, the determination of organic carbon in the soil was carried out in accordance with the Tyurin method, the content of chlorophyll and carotenoids was determined by photometrical method. The study showed that in stressful conditions (abnormal hot weather) there are changes happening in the pigments system of the leaf and in the barrier function in relation to heavy metals.