Дифференциация деревьев в санитарно-защитных лесных насаждениях Стерлитамакского промышленного центра

Abstract

The paper presents the results of many years of research on the assessment of the relative vital state and accumulation of cadmium in the aboveground and underground organs in healthy and weakened poplar trees of balsamic and birch trees in the conditions of industrial contamination of the Sterlitamak industrial center. It is shown that in the conditions of industrial pollution of the Sterlitamak industrial center, the overwhelming majority of balsamic poplar trees belong to the category of «weakened» and «healthy» birch trees. Under the influence of industrial pollution in the poplar balsamic there is a decrease in the density of the crown and the formation of a large number of dead branches. When studying root systems in healthy and weakened trees under conditions of industrial contamination of the Sterlitamak industrial center, it was found that at a depth of 0–20 cm, the rooting of the soil by the absorbing roots of balsamic and birch poplar roots decreases compared to the control. Also, it is established that in conditions of industrial pollution, the roots of healthy balsamic poplar trees are able to absorb more cadmium from the soil, thereby reducing their transport to terrestrial plant organs.