ASSESSMENT OF THE IMPACT OF DEEP REJUVENATION PRUNING ON THE CONDITION OF POPLARS IN THE URBANIZED ENVIRONMENT OF ZHYTOMYR

Abstract

In the article presents a historical description of the introduction of poplars into the green economy of populated areas of Ukraine, justifies the relevance of the research, the purpose of the study is to assess the impact of deep rejuvenating pruning on poplar trees in green spaces of the city of Zhytomyr, outlines the research methodology, characterizes the street plantings in which the research was conducted according to the degree of anthropogenic load. It is determined that the dominant species in the plantings is the pyramidal poplar (Populus pyramidalis Rozier). The results of the study of the phytosanitary condition of poplars that underwent deep rejuvenating pruning are provided, the phytosanitary condition of poplars on streets with different degrees of anthropogenic load is described by categories, and the causes of the death of pyramidal poplar (P. pyramidalis) trees in green spaces of the city of Zhytomyr after deep rejuvenating pruning are identified. The seasonal dynamics of the aesthetic appeal of pyramidal poplar (P. pyramidalis) in the stands of the city of Zhytomyr are presented, depending on the age of deep rejuvenating pruning, it was established that the degree of decorativeness (aesthetic appeal) of poplar trees depends on the degree of soil moisture, the sum of active temperatures and the average daily ambient temperature. The dust-retaining properties of pyramidal poplar (P. pyramidalis) were studied at sites with different levels of technogenic load, so on streets with a high level of technogenic load, leaves retain a mass of dust that is several times greater than on streets with a low level of anthropogenic load. A direct relationship between the degree of technogenic load and the protective functions of poplar trees was determined, so in places with a high anthropogenic load, poplars lose their phyto-ameliorative properties faster, in such stands the trees age faster and die. In general, poplar trees in green stands of the city of Zhytomyr are in excellent and good condition and fully perform protective and phyto-ameliorative functions.