title: HALF-CENTURY MONITORING OF THE CONDITION OF AUTOCHTHONIC POPLAR TREE STANDS IN THE KHOPERSKY RESERVE
abstract: This paper provides an analysis of the fifty-year dynamics of the main characteristics of white poplar (Populus alba L.), gray poplar (Populus canescens Sm.) and black poplar (Populus nigra L.) stands on the territory of the Khopersky State Nature Reserve based on materials from permanent trial plots established by A. I. Sivolapov in 1972 and 1976 for the purpose of selective selection of the most productive and stable clonal micropopulations of these species. The changes that occur in the sampl