FLUORESCENCE TESTING OF THE EUROPEAN BEECH IN THE BOTANICAL SITE OF NATURE OF LVIV

The botanical sights of nature were studied, including the decorative forms of the European beech (Fagus sylvatica), which were used in the landscaping of Lviv. The relevance of monitoring studies of the state of the urban dendroflora of botanical natural monuments is due to the need to form a basic level of ecological data to assess the nature and dynamics of ecosystems. The scientific and historical value of nature conservation territories of the botanical category is shown. Photobiological methods were used to perform a comparative analysis of the pigment content and fluorescent parameters of tree species in the ecological and phytocenotic zones of the complex green zone of the city. The high plasticity of the structural organization of the chloroplasts of European beech leaves, characterized by the content of chlorophyll and carotenoids, was established. The studied plants respond to increased urbogenic load by increasing the content of chlorophyll and carotenoids in the park and street plantings. It has been established that the use of the fluorescent method is promising in scientific research, when controlling the sanitary condition of tree plantations, as it provides the determination of an integral scientifically capable parameter - the vitality index of trees. Based on the measured fluorescent parameters, the vitality index of the trees was determined. In street plantings, the vitality index decreases by 2 times, which indicates a decrease in the activity of the donor part of the photosynthetic apparatus. The practical use of modern methods of fluorescence express vegetation testing, which provide a correlational synthesis of morphophysiological and biophysical mechanisms of photosynthesis and graphoanalytical information, is substantiated, which is necessary for the creation of information and diagnostic systems for comprehensive monitoring of urban ecosystems, preservation of biodiversity and protection of the floristic gene pool of urban areas.